High pressure needle valve

High pressure needle valve refers to a needle valve suitable for pipeline equipment with pressures ranging from 10Mpa to 100Mpa, while the American standard ranges from 1500LB-2500LB. The connection methods for high-pressure needle valves can be threaded, welded, or flanged. High pressure valve body materials include forged steel A105, forged stainless steel 304, 304L, 316, 316L and other materials. Applicable temperature: -196 ℃~+440 ℃, -70 ℃~-240 ℃, ≤ 540 ℃, ≤ 570 ℃ and other working conditions. The working principle of the high-pressure needle valve produced by Shanghai Meiyanyi Pump Valve is to control the flow rate and pressure of the fluid by changing the distance between the valve core and the valve seat. When the valve core is separated from the valve seat by different distances, different annular gaps are formed between the valve core and the valve seat, thereby changing the channel area of the fluid and achieving precise adjustment of the flow rate.