Sewage pumps can be selected according to different sewage discharge methods. Sewage pumps can be mainly divided into self-priming sewage pumps, submerged sewage pumps, cutting sewage pumps, submersible sewage pumps, coupled submersible sewage pumps, unobstructed sewage pumps, pipeline sewage pumps, and automatic mixing sewage pumps. Shanghai Meiyanyi Pump Valve is one of the well-known suppliers of domestic sewage pump products. The series of sewage pump products manufactured and produced by Shanghai Meiyanyi Pump Valve have the characteristics of being able to transport liquids containing hard solids, fibers, as well as particularly dirty, sticky and slippery liquids. They are widely used in industries such as mining, papermaking, printing and dyeing, environmental protection, oil refining, petroleum, chemical industry, farms, dyeing and chemical industry, brewing, food, fertilizer, coking and selection plants, construction, marble plants, etc. They are mainly used for wastewater discharge of enterprises in these industries, sewage discharge of garage basements, centralized discharge of domestic sewage in urban sewage treatment plant discharge systems, subway, civil defense system drainage stations, hospitals, hotels, high-rise buildings, centralized discharge of sewage in residential areas, municipal engineering, and construction sites. Discharge of mud and sludge, water supply and drainage systems in water plants The discharge of wastewater from breeding farms, irrigation of rural farmland, exploration of mines, and supporting water treatment equipment are widely used. Shanghai Meiyanyi Pump Valve is a professional manufacturer of sewage pumps, providing you with various models and specifications of sewage pump products, pictures, drawings, and detailed solutions, with thoughtful service.

Diaphragm pumps are mainly divided into pneumatic diaphragm pumps, electric diaphragm pumps, and hydraulic diaphragm pumps. Pneumatic diaphragm pumps are a type of volumetric pump that uses compressed air as the power source and causes a change in volume due to the reciprocating deformation of the diaphragm. Its working principle is similar to that of an electric diaphragm pump and is similar to that of a plunger pump. Due to the characteristics of the working principle of diaphragm pumps, pneumatic diaphragm pumps have the characteristic of not overheating. They use compressed air as the power source and undergo an expansion and heat absorption process during exhaust. The temperature of pneumatic pumps decreases during operation, and no harmful gases are discharged. Electric diaphragm pumps can also handle liquids containing particles, as they operate in a volumetric manner and have a ball valve inlet, making them less prone to clogging. Shanghai Meiyanyi Pump Valve is one of the well-known suppliers of diaphragm pumps. The various diaphragm pump products manufactured and produced have extremely low shear forces on materials, and they are sucked in and expelled during operation, resulting in minimal agitation of materials. They are suitable for transporting unstable substances and can transport a wide range of fluids, from low viscosity to high viscosity, and from corrosive to viscous. Diaphragm pumps also have the advantages of small size, light weight, easy mobility, no need for lubrication, easy maintenance, and no pollution of the working environment due to dripping. Shanghai Meiyanyi Pump Valve is a professional manufacturer of diaphragm pumps, providing you with various models and specifications of sewage pump products, pictures, drawings, and detailed solutions made of cast iron, PVC, aluminum alloy, and stainless steel materials, with thoughtful service.

Chemical pumps, as key supporting equipment in the production and processing of the petrochemical industry, are receiving increasing attention from people. Due to the complex characteristics of chemical media and the increasing demands of users, the scientific selection of materials should be the first thing to consider when selecting chemical pumps. As one of the strong corrosive media, sulfuric acid is an important industrial raw material with a wide range of applications. The corrosion of materials varies greatly with different concentrations and temperatures of sulfuric acid. For concentrated sulfuric acid with a concentration of over 80% and a temperature below 80 ℃, carbon steel and cast iron have good corrosion resistance. However, for high-speed flowing sulfuric acid, it is more economical and practical to use a fluorine lined pump (F46). In addition to conventional chemical pumps, Shanghai Meiyanyi Pump Valve also produces IHF fluorine lined pumps, PF (FS) strong corrosion-resistant centrifugal pumps, CQB-F fluoroplastic magnetic pumps, and other specifications and types. For harsh requirements such as high temperature and high concentration acetic acid or other corrosive media, high alloy stainless steel or fluoroplastic pump series chemical pumps can be selected. The viscosity of the medium has a significant impact on the performance of the pump. As the viscosity increases, the pump's head curve decreases while the power increases, resulting in a decrease in efficiency. The parameters on general samples are the performance when transporting clean water, and conversion should be performed when transporting viscous media (correction factors for different viscosities can be found in relevant conversion charts). Shanghai Meiyan Yi Pump Valve also provides you with pictures, drawings, and detailed technical parameters of various specifications and types of chemical pump products for your reference.

【 Magnetic Pump 】 Model Specifications _ Pictures _ Magnetic Pump Manufacturer: Shanghai Meiyan Yi Pump Valve The magnetic pump is mainly composed of three parts: pump head, magnetic transmission (inner and outer magnetic steel), and electric motor. When the electric motor drives the outer magnetic rotor to rotate, the magnetic field can penetrate the air gap and non-magnetic substances, driving the inner magnetic rotor connected to the impeller to rotate synchronously, achieving non-contact transmission of power and transforming the dynamic seal into a static seal. Shanghai Meiyanyi Pump Valve is one of the well-known magnetic pump suppliers in China. The magnetic pumps manufactured and produced by the company completely solve the problems of "running, emitting, dripping, and leaking" due to the pump shaft and inner magnetic rotor being completely sealed by the pump body and isolation sleeve, eliminating the safety hazards of flammable, explosive, toxic, and harmful media leaking through the pump seal in the refining and chemical industry, and effectively ensuring the normal operation of safe production. The main working principle of a magnetic pump is to arrange n pairs of magnets (n is even) in a regular manner and assemble them on the inner and outer magnetic rotors of a magnetic actuator, so that the magnet parts form a complete coupled magnetic system. When the inner and outer magnetic poles are opposite in polarity, i.e. the displacement angle between the two poles is Φ=0, the magnetic energy of the magnetic system is at its lowest; When the magnetic poles rotate to opposite poles, i.e. the displacement angle between the two poles is Φ=2 π/n, the magnetic energy of the magnetic system is at its maximum. After removing the external force, due to the mutual repulsion of the magnetic poles in the magnetic system, the magnetic force will restore the magnet to its lowest magnetic energy state. So the magnet generates motion, driving the magnetic rotor to rotate. Shanghai Meiyan Yi Pump Valve also provides you with various specifications and models of magnetic pump products and pictures, with thoughtful service.

The types of centrifugal pumps mainly include single-stage single suction, multi-stage single suction, single-stage double suction and other design structures, including pipeline, submersible, self-priming, submersible and other forms. The main components of a centrifugal pump include the impeller, pump casing, and shaft seal device. The function of the impeller is to directly transfer the mechanical energy of the prime mover to the liquid, in order to increase the static pressure energy and kinetic energy of the liquid (mainly increasing static pressure energy). The impeller generally has 6-12 rear curved blades, including open, semi closed, and closed types. Open impellers have no cover plates on both sides of the blades, making them easy to manufacture and clean. They are suitable for conveying materials containing a large amount of suspended solids, with low efficiency and low liquid pressure; The semi closed impeller has no cover plate on one side of the suction port and a cover plate on the other side, which is suitable for conveying materials that are prone to sedimentation or contain particles, and has lower efficiency; The closed impeller has front and rear cover plates on both sides of the blade, which has high efficiency. Shanghai Meiyanyi Pump Valve is one of the major centrifugal pump manufacturers in China, mainly producing centrifugal pump products suitable for conveying clean liquids without impurities. We provide you with various specifications and types of centrifugal pump product pictures and drawings, and welcome new and old customers to choose.

The design of multi-stage pumps mainly adopts a balance drum, a balance drum sleeve, and a balance water pipe device to balance axial forces. A protruding sealing ring structure and a balance hole are added to the rear cover plate of each impeller section to achieve the goal of balancing most of the axial forces. The new structure of the vertical multi-stage pump mainly manufactured and produced by Shanghai Meiyanyi Pump Valve is simpler than the existing general multi-stage centrifugal pump, reducing the volume and weight of the pump, and achieving good balance effect, high reliability of operation, and avoiding the possibility of corrosion caused by long-term non operation of the pump. The horizontal multi-stage pump joint balancing device produced by Shanghai Meiyan Yi Pump Valve involves a joint balancing device that balances the axial force between the pump shaft and the body, eliminating the axial thrust of the pump rotor. The clearance between the balance plate and the balance ring is optimal, improving the reliability and service life of the water pump. Shanghai Meiyanyi Pump Valve is one of the main manufacturers of multi-stage pumps in China. The vertical multi-stage pumps produced are mainly suitable for the water supply field, mainly used to increase water pressure to meet the water pressure needs of high-rise buildings, industrial equipment, municipal engineering, etc. In urban water supply systems, multi-stage pumps are often used as the main equipment of central water pumping stations to ensure stable pressure of drinking water for urban residents. Horizontal multi-stage pumps are widely used in the industrial field, commonly used for conveying liquid media, water supply, high-pressure water injection, cooling circulation, and other aspects. For example, multi-stage pumps are important equipment in industrial enterprises such as refineries, smelters, power plants, and paper mills.

The screw pump delivers liquid by interlocking the screw with the liner, resulting in volume changes in the suction and discharge chambers. This pump has a simple structure, easy manufacturing, high flow rate, low head loss, high efficiency, and is easy to maintain and repair. Screw pumps are suitable for conveying high viscosity media, with good self-priming ability, smooth operation, stable flow rate, minimal pulsation of the conveying medium, simple operation, relatively low maintenance costs, high efficiency, and energy savings. Shanghai Yinai Pump Valve is a major screw pump manufacturer in China, and has cooperated with customers to study the impact of bottomhole pressure fluctuations on heavy oil production through experimental simulation methods. Under constant pressure conditions, heavy oil and formation water are simultaneously injected into an artificial core of saturated oil to simulate the oil-water two-phase flow characteristics of a near wellbore reservoir under pump suction. The production processes of a pumping pump and a screw pump are simulated using an electromagnetic valve at the outlet to generate and not generate periodic fluctuations. From the analysis of oil and water production, it was found that the water production under fluctuating conditions is higher than that under non fluctuating conditions, while the former produces less oil than the latter. Moreover, as the fluctuation period increases, the water production rate increases while the oil production rate decreases. The pressure fluctuations during the production process of the oil well pump increase the amount of water produced; The continuous suction of screw pumps reduces water production and increases heavy oil production. The screw pumps manufactured by Shanghai Meiyan Yi Pump Valve are mainly suitable for conveying various liquids, including high viscosity liquids, liquids containing solid particles, etc. They are widely used in various fields such as industry, chemical industry, medicine, food, etc., including various chemical substances, crude oil, petroleum, detergents, coatings, pigments, synthetic resins, and acids, bases, salts, organic solvents, etc. The following screw pump product pictures are for reference only.

Self priming pumps are widely used in various applications such as sprinkler irrigation, firefighting, and lifting of low-level liquids. The self-priming pump produced by Shanghai Meiyanyi Pump Valve has a short self-priming time, with a maximum self-priming height of up to 9 meters. The self-priming performance is very good. We continuously research and improve the calculation formula for the size and position of the reflux hole, as well as the control of the tongue gap, the water storage volume inside the pump, and the volume of the gas-liquid separation chamber. We have solved the influence mechanism of external factors such as the airtightness of the shaft seal, the airtightness of the suction pipeline, the depth of the pipeline submerged in the liquid surface, and the volume of the inlet pipeline on the self-priming performance; Shanghai Meiyanyi Pump Valve is a well-known research and development manufacturer of self-priming pumps in China, which has grasped the trend and direction of further development of self-priming pumps and provided guiding suggestions for the research work of self-priming pumps in China. After using our company's self-priming pump products, you no longer need to install bottom valves and fill water every time you start, making it easy to use. The products have been widely used in various industries in China. The working principle of the self-priming pump of Shanghai Meiyanyi Pump Valve is to fill the pump casing with water (or water stored in the pump casing itself) before the pump is first started. After starting, the high-speed rotation of the impeller causes the water flow in the impeller channel to flow towards the vortex shell. At this time, a vacuum is formed at the inlet, causing the inlet check valve to open, and the air in the suction pipe to enter the pump and reach the outer edge through the impeller channel. Different media can use self-priming pumps made of different materials. The following are pictures of self-priming pump products of various specifications and models for reference only.

Rotary pumps, also known as colloid pumps, three bladed pumps, shoe sole pumps, etc., are widely used in industries such as food, beverage, chemical, and pharmaceutical. Due to the unique shape and high precision requirements of the rotor of the rotary pump, there are few successful manufacturers in China, and many users can only purchase imported equipment. To change this unfavorable situation, Shanghai Meiyan Yi Pump Valve has been actively organizing technical personnel to tackle rotor pumps for many years. They have developed a rotor curve design program in C language and inputted it into a machining center for precision machining, thereby ensuring the high precision requirements of key components of the pump with strict consistency requirements. The rotary pumps produced by Shanghai Meiyanyi Pump Valve have a wide range of applications, covering multiple fields such as chemical, petroleum, food, water treatment, and pharmaceutical industries. A rotary pump is a type of rotating positive displacement pump that changes its working volume through relative motion between the rotor and the pump body, thereby increasing the energy of the liquid. Due to its positive displacement property, the flow rate of the rotary pump does not vary with changes in back pressure, which makes it perform well in various application scenarios. The spare parts that come into contact with the conveyed material inside the rotary pump body are made of stainless steel materials that meet hygiene standards, and the seals are made of non-toxic rubber, which is particularly suitable for conveying high viscosity liquids and sensitive industrial fluids, such as dairy products, beverages, and oils. Various specifications, models, and picture drawings of rotary pumps are provided for your selection reference.

The main characteristic of sanitary pumps (referred to as sanitary pumps) is that the overcurrent components of the pump must be made of sanitary stainless steel materials. Due to the importance of food safety to people's lives, the materials of sanitary pumps (referred to as sanitary pumps) produced by Shanghai Meiyanyi Pump Valve are strictly inspected before being put into use, ensuring the primary feature of sanitary pumps. The products mainly include colloid pumps, stainless steel sanitary pumps, sanitary grade centrifugal pumps, light-duty multi-stage centrifugal pumps, light-duty stainless steel multi-stage centrifugal pumps, etc., which are widely used in the food and beverage industry. The main design features and requirements of sanitary pumps are quite strict, including that all flow components of the pump have no sanitary dead corners and can be cleaned (CIP) and disinfected (SIP) online. All flow components must be made of food grade materials, including sealing components, which ensure that the product will not be contaminated during the transportation of food materials and meet the requirements of high hygiene standards. The sanitary pumps (referred to as sanitary pumps) produced by Shanghai Meiyan Yi Pump Valve Factory come in various forms and specifications, such as vertical, horizontal, single-stage, multi-stage, single suction, double suction, self-priming, etc., which can be selected according to different application needs to meet the special requirements in various industrial processes. The following pictures and drawings of sanitary pump products of various specifications and models are provided for your selection reference.

Deep well pump is a blade type pump used to lift water in deep wells. It is generally based on a multi-stage structure diagram, and the long shaft deep well pump is a commonly used type of well pump, mostly used in machine wells. Deep well pumps generally consist of a vertical electric motor at the top, a water supply pipe and a drive pump shaft in the middle, and working parts such as the inlet of the well pump at the bottom. Deep well pumps are generally segmented multi-stage vertical centrifugal pumps. Shanghai Meiyanyi Pump Valve is one of the main manufacturers of deep well pumps in China, producing high-quality stainless steel multi-stage deep well pumps. Proper use and timely troubleshooting based on the structural characteristics of deep well pumps are crucial for ensuring their safe operation and extending their service life. The deep well pumps manufactured by Shanghai Meiyan Yi Pump Valve have a wide range of applications, mainly including farmland irrigation, underground water intake for industrial and mining enterprises, household drinking groundwater intake, deep well agricultural irrigation intake, animal drinking water, drainage irrigation, emergency water supply, petroleum exploration, geothermal power generation, underground temperature monitoring and other different fields. The following are various specifications and types of deep well pump products and pictures for reference only.

Submerged pump is a pump in which all working components (mainly the pump head) are submerged in liquid except for the motor. Submerged pumps produced by Shanghai Meiyan Yi Pump Valve generally have no shaft seals and no leakage, and have the characteristics of small footprint, reliable use, easy maintenance, and strong corrosion resistance. The vertical motor of the submersible pump is fixed to the motor seat with bolts, and is directly transmitted to the pump shaft through an elastic coupling. The pump body, intermediate connecting pipe, pump frame, outlet pipe, and pipe flange are connected by bolts to form a whole and fixed on the bottom plate. The entire submersible pump is installed on the container through the bottom plate. The axial and radial forces of the pump, including the water pressure generated during pump operation, the weight of the impeller and rotor, etc., are all generated by the one-way thrust ball bearings and single row radial ball bearings installed in the bearing box; And the sliding guide shaft bears to ensure the safe and normal operation of the pump. The bearings are lubricated with butter, and the guide bearings are lubricated with the liquid being transported. Therefore, the liquid level must be higher than the centerline of the impeller during operation. If the length L of the container is different, it can be divided into intermediate guide bearing structures and structures without intermediate guide bearings. Shanghai Meiyanyi Pump Valve is one of the main manufacturers of submersible pumps, and its submersible pump products have been widely used in industrial sectors such as chemical, pharmaceutical, papermaking, and petroleum. The following are product pictures and drawings of various specifications and models of submersible pumps for your selection reference.

A submersible pump is a type of water pump that operates completely underwater, typically consisting of a motor and a pump. All components are sealed inside the pump body and can be fully submerged in water for operation. The submersible pumps produced by Shanghai Meiyanyi Pump Valve are all centrifugal water pumps. Their working principle is that the electric motor drives the impeller to rotate at high speed through the pump shaft, and works on the liquid under the action of centrifugal force, converting mechanical energy into liquid energy and extracting groundwater or other liquids. The main components of a submersible pump include a motor and a pump head. The motor part is a sealed dry structure, consisting of a motor seat, upper end cover, stator winding, rotor (directly connected to the pump shaft), lower end cover, bearings, etc; The pump head part includes the connecting frame (mechanical seal cover), pump body, impeller, pump seat, outlet bend, cable, sling or coupling, etc. The submersible pump of Shanghai Meiyan Yi Pump Valve has the characteristics of high efficiency, no entanglement, no blockage, small size, and light weight. It has a wide range of application scenarios, including water intake from water pools, mine rescue, farmland irrigation, ship loading, fountain water use, etc. In addition, submersible pumps are also suitable for hot spring bathing and extracting groundwater from wells. They can also be used for temporary water extraction projects such as rivers, reservoirs, and canals.

The metering pump is mainly composed of three parts: power drive, fluid delivery, and regulation control. The power drive device drives the fluid delivery diaphragm to achieve reciprocating motion through a mechanical linkage system: the diaphragm (piston) will be sucked in by the delivered fluid in the first half of the stroke and discharged from the pump head in the second half of the stroke; Therefore, changing the reciprocating frequency of the stroke or the stroke length of each reciprocating motion can achieve the goal of adjusting the fluid delivery volume. The precise machining accuracy ensures the precise measurement of the conveyed medium by pumping out each time. The metering pump products produced by Shanghai Meiyanyi Pump Valve can be roughly divided into two types: plunger metering pumps and diaphragm metering pumps, based on their different power drive and fluid delivery methods. A metering pump, also known as a quantitative pump or a proportional pump, is a special type of volumetric pump mainly used to meet various strict process requirements. Its main feature is the ability to achieve stepless adjustment of flow rate within the range of 0-100%, suitable for transporting various liquids, especially corrosive liquids. The stability and accuracy of a metering pump are usually required to not exceed ± 1%, which makes it particularly important in applications that require precise metering. Shanghai Meiyanyi Pump Valve is one of the main manufacturers of metering pumps, which are mainly suitable for the petroleum and chemical industries. Metering pumps are mainly used in these industries to extract or transport various media, such as crude oil, acid-base solutions, solvents, etc., as well as to circulate and filter liquids. In the food industry, metering pumps are used to accurately measure various liquid foods, such as beverages, milk, juice, etc; In the pharmaceutical industry, it is used for precise measurement and dispensing of drugs to ensure the accuracy of dosage and stability of the medication. The following pictures and drawings of various specifications and models of metering pumps are provided for your reference in selection.

There are various types of vacuum pumps, including single-stage rotary vane, two-stage rotary vane, water ring, direct coupled rotary vane, cantilever, slide valve vacuum pumps, and Roots pumps. They are mainly suitable for the vacuum space needs of the industrial industry. The rotary vane vacuum pump produced by Shanghai Meiyan Yi Pump Valve belongs to the oil sealed rotary vane mechanical vacuum pump. The daily maintenance and inspection includes observing the color of the pump oil, checking the oil level, and inspecting the filters at the inlet and outlet ports. The common faults of vacuum pumps are oil leakage, inability to reach the maximum vacuum degree, and inability to start. After determining the fault, the repair method is to replace the aging sealing components, add and replace new oil, clean the oil circuit, replace the aging oil distributor, rotor and spring, replace damaged power components and motor coils, etc. For more vacuum technologies, please check our vacuum pump technical support directly or consult our technicians. The main function of the vacuum pump produced by Shanghai Meiyanyi Pump Valve is to evacuate the container to be evacuated through mechanical, physical, chemical, or physicochemical methods, in order to obtain vacuum. This vacuum pump equipment is widely used in multiple fields, including metallurgy, chemical industry, food, electronic coating, etc. The working principle of a vacuum pump is basically to continuously suction gas, allowing a certain volume of gas to enter the pump and then be discharged. As a result, the gas in the chamber becomes less and less, and the suction effect of the pump becomes more and more obvious, ultimately reaching equilibrium and forming a vacuum. The following are pictures and parameters of various models and specifications of vacuum pump products.

Pipeline pump is a type of centrifugal pump with vertical, horizontal, single-stage, multi-stage, shielded and other structures. It is named pipeline pump because its inlet and outlet are on the same straight line and have the same diameter, resembling a section of pipeline. It can be installed at any position in the pipeline. Pipeline pump, also known as booster pump or circulation pump, is a mechanical device capable of transporting liquids. Shanghai Meiyanyi Pump Valve is a major pipeline pump manufacturer in China, producing pipeline pumps made of materials such as cast iron and stainless steel. They are mainly suitable for high-rise buildings, garden irrigation, pipeline pressurization, cold and hot water circulation, and transportation of flammable, explosive, and corrosive liquids. The production and manufacturing technology of pipeline pumps has become very mature, with stable performance, and has been widely applied in fields such as urban construction, environmental protection, and industry in China. Its working principle is similar to that of a water gun, where the impeller is driven by a motor to rotate and suck liquid into the pump body. With the rotation of the impeller, the liquid is pushed to the pump outlet and flows along the pipeline to the desired location. The pipeline pump equipment produced by Shanghai Meiyanyi Pump Valve is widely used in industry and daily life, such as in the industrial field for boosting transportation and solving the problem of low pipeline pressure; It also plays an important role in agricultural irrigation, urban water supply, sewage treatment and other fields. The following are pictures and parameters of various specifications and models of pipeline pumps for reference only.

Fire pumps are mainly suitable for high-rise buildings in urban construction and fire protection system pipelines in industrial industries. The main function of a fire pump is to provide the necessary water source pressure and flow, ensuring the effective operation of the fire water system to meet the requirements for water pressure and volume during firefighting. When a fire occurs, the fire pump equipped with an automatic control system can automatically supply water, reach a certain water pressure requirement in a short period of time, effectively ensure the pressure of the pipeline network, timely control and extinguish the fire, and ensure the safety of people and property. With the rapid development of China's chemical and power industries, the safe, reliable, and stable operation of fire water systems is becoming increasingly important, and the level of automatic regulation and control of fire water systems is also increasing. With the widespread application of programmable PLC automatic controllers and frequency converters to regulate the principle, the fire water system adopts programmable PLC automatic controllers and frequency converters to regulate and control the constant water supply pressure, effectively ensuring timely water supply in case of fire, and can automatically switch back and forth to ensure the safe use of the water supply system, realizing unmanned duty and avoiding errors caused by human factors. The fire pump produced by Shanghai Meiyan Yi Pump Valve is a key equipment in the fire protection system and one of the certified fire pump manufacturers. The produced fire pumps and complete fire protection equipment can ensure the stable, safe and reliable operation of the fire protection system. The following types and specifications of fire pump products are available for you to choose from.

Mid open pump is a single-stage double suction, centrifugal, volute structure clean water pump, which can also be used in seawater or other mildly corrosive media similar to water after using different impeller materials. Generally, it is more commonly used in high flow and low head water supply and drainage and circulating water applications. Shanghai Yinai Pump Valve is a well-known domestic manufacturer of medium open pumps. The produced medium open pumps have the characteristics of long service life, high efficiency, reasonable structure, low operating cost, easy installation and maintenance, and can also be applied to high head fire protection system pipelines. The medium opening pump produced by Shanghai Meiyan Yipum Valve also has the characteristics of simple structure, excellent performance, and high efficiency and energy saving. Its design allows for a high flow rate of the conveying medium, suitable for conveying clean water or other liquids with physical and chemical properties similar to water that do not contain solid particles. The temperature range of the medium is 0 ℃ to 80 ℃, and the inlet pressure is allowed to reach 0.6MPa. The wide application of Shanghai Meiyan Yi Pump Valve's medium open pump products is due to its high-efficiency motor drive, which demonstrates amazing water lifting ability and greatly improves irrigation efficiency. The following are pictures and information of various specifications and models of medium opening pumps for reference only.

Oil pump is one of the main pumps used by petrochemical enterprises. Shanghai Meiyanyi Pump Valve has conducted in-depth research on the efficiency of oil pumps and the cutting law of oil pump impellers, as well as ordinary Xiaoshui centrifugal pumps. It is one of the main manufacturers of oil pumps, and its main oil pump products include AY type oil pumps, KCB, 2CY type gear oil pumps, LQRY type hot oil pumps, BBG type gear pumps, SZA type, ZA, ZAO type chemical pumps, oil barrel pumps, etc., which have been widely used in the petrochemical industry. The oil pumps produced by Shanghai Meiyan Yi Pump Valve are mainly used for oil pumps in petrochemical and other enterprises, which are very different from general specialized oil pumps (such as automotive oil pumps, machine tool oil pumps, etc.). They have a wide range of uses and no limited operating conditions. The main features are high explosion-proof rating and a complete range of types, specifications, and models. The following oil pump product pictures and technical parameters are for your selection reference only. For the transportation of high viscosity slurries, pastes, and viscous liquids such as crude oil, it is recommended to use Shanghai Meiyan Yi Pump Valve's screw pumps and gear oil pumps, which are suitable for medium viscosities up to 1000000 cst.

Marine pumps are the main pumping equipment on various ships that need to transport liquids at a certain pressure. Due to the special nature of ships floating on the water surface, the quality requirements for marine pumps are higher than those for general general-purpose pumps. The general pumps for ships include bilge pumps, ballast pumps, fire pumps, daily fresh water pumps, daily seawater pumps, hot water circulation pumps, and general-purpose pumps that also serve as ballast, fire, and bilge pumps. They play a key role in the daily operation and maintenance of ships. The pumps used in ship power equipment are mainly used for the power system of ships, including fuel pumps, lubricating oil pumps, seawater pumps, freshwater pumps, hydraulic pumps for servos or other deck machinery, feed pumps for boiler equipment, cooling water pumps for refrigeration equipment, seawater pumps and condensate pumps for seawater desalination equipment, etc. These pumps play an important role in the power, lubrication, cooling, and water supply of ships. Special ship specific pumps are designed for certain specialized vessels, such as cargo oil pumps for oil tankers, mud pumps for dredgers, salvage pumps for salvage ships, water jet propulsion pumps for waterjet propulsion ships, and fishing pumps for meshless fishing boats. These pumps are designed according to the specific needs of the vessel, ensuring its normal operation in specific working environments. Shanghai Meiyan Yi Pump Valve produces various models, specifications, and types of marine pumps, including marine water pumps, marine centrifugal pumps, marine jet pumps, marine vacuum pumps, marine oil pumps, marine vertical centrifugal pumps, and marine horizontal centrifugal pumps. For specific detailed parameters, please click on the image link below.

Impurity pumps are used to transport liquids containing solid particles, and the flow components of the pump are required to be corrosion-resistant. To prevent blockage caused by solid phase crystallization, the number of blades in the impeller is relatively small, usually between 2-8, and the pump body often uses a wider flow channel. To prevent solid particles from entering the shaft seal and prevent external air from flowing in, clear liquid is used as the sealing liquid at the shaft seal, and the shaft seal structure is required to be reliable. The centrifugal impurity pump can also be subdivided into slurry pump, mud pump, sand pump, gravel pump, dredge pump, foam pump, etc. according to the specific use. Volumetric impurity pumps mainly include reciprocating pumps such as screw pumps, jet pumps, hose pumps, hydraulic lift pumps, and concrete pumps, which transport liquids through the reciprocating motion of pistons or diaphragms. Impurity pumps have a wide range of applications, and various types of impurity pumps are suitable for transporting various media containing impurities. The impurity pumps manufactured by Shanghai Meiyanyi Pump Valve include various models and specifications such as slurry pumps, mud pumps, sand pumps, gravel pumps, dredging pumps, pulp pumps, concentrated slurry pumps, submersible slag pumps, ceramic pumps, etc. Some of them are made of wear-resistant alloy materials. The transmission methods of various impurity pumps produced by Shanghai Meiyan Yipum Valve are mostly connected to electric motors through elastic coupling components, as well as direct connection and other types of impurity pumps. During the use of the impurity pump, the operating direction should be viewed from the direction of the motor, and the pump should rotate clockwise.

Special pumps refer to special water pumps that need to meet the requirements of special working conditions during the medium transportation process. Common water pumps include centrifugal pumps, axial flow pumps, mixed flow pumps, self-priming pumps, magnetic pumps, submersible pumps, etc., which have been improved according to special requirements and are suitable for the transportation of special media in special working conditions such as corrosion resistance, high temperature, low temperature, high pressure, low pressure, flammability, explosiveness, viscosity, etc. Special water pumps have a wide range of applications, such as special working conditions in industries such as chemical, pharmaceutical, petroleum, metallurgy, and power. Some special occasions require the use of special water pumps, such as transporting corrosive chemical media, ultra-high or ultra-low temperature media, flammable and explosive media, etc. In order to facilitate your selection, Shanghai Meiyanyi Pump Valve has specially displayed all special working condition requirements, special material requirements, and various specifications and models of water pumps outside the conventional pump classification, such as screw pumps, jet pumps, water hammer pumps, water wheel pumps, and air lift pumps, in this category for your reference in selection. Shanghai Meiyan Yi Pump Valve also undertakes the research and design of pumps for various special working conditions. We welcome new and old customers to visit us.

The water pump control cabinet is mainly used for automatic control of water pumps during use. The water pump control cabinet products produced by Shanghai Meiyan Yi Pump Valve are mainly divided into four categories: direct start (0.75kW~15kW), Y - △ pressure reduction start (15kW~132kW), autotransformer pressure reduction start (15kW~200kW), and soft start (15kW~200kW). According to different needs, seven control types have been set up, including liquid level control type, pressure control type, temperature control type, time control type, air conditioning joint control type, submersible sewage pump dedicated type, and fire control type. And it has protection functions for main circuit short circuit, phase loss, overload, overcurrent, pump body leakage of dedicated pumps, and overheating of stator windings. In addition, each type is divided into single control type, multi pump main and backup mutual control type. The main and backup mutual control products all have functions such as automatic cut-off of the main pump in case of failure, automatic shutdown of the backup pump without water, automatic exchange and rotation, and alarm for shutdown due to excessive water level.

Non negative pressure water supply equipment is a type of pressurized water supply unit that is directly connected to the municipal water supply network, and is connected in series with the residual pressure of the municipal water supply network to ensure that the pressure of the municipal water supply network is not less than the set protection pressure (the set pressure must be higher than the pressure demand of the direct supply area of the community, generally not less than 1.2Kg). It is a secondary pressurized water supply equipment. The core of the pipeline network pressure (no negative pressure) water supply equipment is how to prevent negative pressure from occurring during the operation of the secondary pressurized water supply system, eliminate the impact of unit operation on the municipal pipeline network, and achieve safe, reliable, stable, and water supply without affecting nearby users. There are two types: tank type and box type. The non negative pressure water supply equipment produced by Shanghai Meiyan Yi Pump Valve mainly consists of a steady flow tank, a vacuum suppressor, a variable frequency speed regulating water pump unit, a pressure sensor, a variable frequency control cabinet, a backflow preventer (optional), a disinfection device (optional), and a small flow pressure holding tank (optional). The inlet pipe from the municipal pipeline network is directly connected to the inlet of the stabilizing tank, and the outlet of the stabilizing tank is connected to the inlet pipe of the booster pump group through a disinfection device. The outlet pipe of the booster unit is connected to the user's water pipe and directly supplies water to the user's pipeline network.