The VALAN-WFR 8 retention valve is used in pneumatic operation systems. It has a ¼” G connection and a nominal pressure of 400 bar.
La válvula de retención VALAN-WFR 32 tiene una conexión roscada de 1 ¼” G y una presión nominal de 250 bar.
Its function is typically to direct the flow of pneumatically activated pressure toward the points needed to cause precise action in the system, both in the group drive lines and in the jockey pumps in the pump groups.
It is installed at the output of the pumps to keep the water, once in the impulse collector, from receding back into the pumps.