Special series regulating valve 1521K

Ragulating valve used to controlthe pressure in front of the vaive. It works as follows:

The modium flows into the valvo body from the direction of the arrow, and is output atter being throttled by the valve seat and the valve core. The other way is through the pressure taking pipe to the actuator to act on the diaphragm, so that the valve core will be correspondingly displaced to achieve the purpose of decompression and voltage stabilizatian. If the pressure before the valve increases, the force acting on the diaphragm increases, and the spring is compressed to drive the valve core to increase the opening of the valve until the pressure behind the valve drops to the set value, Similarly. if the pressure behind the valve

decreases. the force acting on the diaphraam decreases.Due to the reaction force ot the Spring, the valve core is driven to reduce the opening degree of the valve until the pressure before the valve rises to the set value, If the pressure before the valve is less than the set value, the valve is always closed.

Main technical parameters