Cage the characteristics and performance of the pneumatic control valve

Cage type pneumatic control valve is a kind of improved pressure balance type pneumatic control valve, the valve sleeve with high performance of the sealing ring, effectively increase the leakage level, inside the valve fluid channels in an s-shaped fluid lines, also has an improved sleeve, steady fluid flow around wing in guiding advantage is small pressure drop loss, large flow, adjustable range. Flow characteristic curve of high precision, good dynamic stability. Low noise, small cavitation corrosion, pneumatic control valve dynamic stability, low noise, air defense, and is suitable for various temperature control of high pressure fluid. With LHA more spring film actuator or electric actuator, its compact structure, big output force. Products comply with GB/T4213 - 92. Then look at the cage of pneumatic control valve performance, including basic error, return difference, leakage. Metal seat leakage is less than the rated capacity of 0. 01%, in line with the ANSI B16. 104 - 1976 level iv; Soft seat leakage is less than 10 - rated capacity 7, in accordance with ANSI B16. 104 - 1976 level iv. Take locator to poor small 1% of the whole trip, return difference without locator small 3% of the whole trip, LHA1 type small 5% of the whole trip) 。 With a small basic error locator all journey & plusmn; The basic error of 1%, with no locator small all travel & plusmn; 5%.