Pneumatic diaphragm double-seat adjusting valve, is the general actuator of automatic regulation system. Simple structure, reliable action, convenient maintenance, widely used in chemical, petroleum, power, metallurgy for automatic adjustment and remote control

Structure principle

Made up of pneumatic diaphragm actuator and linear double-seat valve

Action principle: signal pressure from regulator, input into air room of pneumatic diaphragm actuator, drive putter to move, then move the valve spool, produce travel, change the flow contained area, regulated the flow of media. Features: two valve seats, large flow capacity, small balanced force, convenient action, widely used