The introduction of pneumatic valve

Pneumatic valve with sleeve guide and pressure balance type valve core, is suitable for the pressure difference is bigger. Using balance ring instead of on the seat, make traditional sleeve two-seater valve structure into the sleeve structure, the improvement has greatly increased the sleeve pneumatic - valve leakage level. Using corrugated tube valve cover and double seal packing, fundamentally eliminate the possibility of leakage of medium. The type pneumatic control valve is suitable for toxic or precious medium flow pressure control. Using the pressure balance valve core structure, opening and closing force small by smaller thrust actuator can control the operation condition of the high pressure difference. Good seal performance, allow the pressure difference is big. Guide sleeve, large area, good stability, compact structure, can quickly change the trims online, maintenance of high efficiency, saving manpower and time. Balanced valve core structure to ensure that the required minimum thrust actuator. Change the direction of unbalanced force is usually adopt the method of change flow direction to change the direction of the role of the FI. Avoid the pneumatic valve itself not region unbalanced force FI change direction alternating, electric valve are prone to oscillation. Such as electric butterfly valve, usually within 5 ° ~ 10 °, 75 ° two alternating, so the minimum opening should be greater than 20%, open degree of 70 °; Again like two-seat valves, at 10% and 80% ~ 90% on opening alternating, in use should be avoided. Replace stability good aerodynamic stability of pneumatic control valve valve its unbalanced force change smaller, good guide, electric sleeve valve has this characteristic. When the electric two-seater valve stability is poorer, can be used for electric sleeve valve.