Pneumatic angle seat valve allows a very large flow rate, can run at zero pressure difference and high medium temperature, can also run at high viscosity and dirty medium, and only need to put the pilot valve outside the area to run in Eex area. The valve is equipped with a pneumatic driver provided by a three-way solenoid valve. The pilot medium pressure enters the driver cylinder and pushes the piston to open or close the gasket through the stem. The gasket is released to the reset position under the action of the reset spring of the pneumatic driver

  There are single acting and double acting. Single action (pneumatic head is usually a hole); working principle; according to the function of spring return to open and close, it is divided into normally open type and normally closed type.

  Double acting (pneumatic head usually has two holes); working principle: air supply controls its switch. (according to the customer’s requirements, double action plus spring return can also be selected for more accurate control)