The movement changes the size of the valve port, which in turn affects the flow and pressure of the fluid. Due to the pointy shape of the spool, even a small movement can cause a large change in flow rate, enabling precise control. In addition, needle valves are usually used in conjunction with pressure gauges for low flow, high pressure gas or liquid medium systems to ensure safe operation and precise control of the system.
In a more specific structure, the seal between the spool and the seat depends on a tight fit of the cone, while the seal between the stem and the seat is usually achieved by a bellows \. Gas sampling This design not only ensures good sealing performance, but also enables the needle valve to work over a wide range of pressures and temperatures.
Hubei Wan 'an HCYY liquid closed sampler, sampler, high temperature process sampling, import closed sampler, closed sampler, liquid sampler
Hubei Wan 'an HCYY liquid closed sampler, sampler, high temperature process sampling, import closed sampler, closed sampler, liquid sampler
Hubei Wan 'an HCYY liquid closed sampler, sampler, high temperature process sampling, import closed sampler, closed sampler, liquid sampler