PVC safety relief valve V69 series

compactdiaphragm

V691 series pressure reducing valves are unidirectional; spring-diaphragm design pressure reducing devices intended to reduce the inlet pressure to pre-set values in chemical process line applications.    V692 series pressure relief valves are unidirectional; spring-diaphragm design pressure relief devices intended to  discharge the over pressure in chemical process line applications.    The diaphragm and valve core are pressed against the valve seat by a spring force. When pressure exceeds the pre-set pressure value in the pipeline, the diaphragm is pushed and the valve is opened to discharge the medium until the pre-set the pressure value is reached. The set pressure for relief application should be set at a 10% higher value of operating pressure. For better performance, the installation should be located close to the pump outlet and should have no other valves between the pump and pressure reducing valves.    Superiorities of V691 / V692 Series Valves, 1, Compact structure and stable performance  2, Easy installation and maintenance 3, Sensitive reaction and good reproducibility  5, Small pressure difference by specially designed flow  structure to avoid forming a closure  6, Easy adjustable pressure setting 7, Installed in the by-passes overflow valve use 8, Used as an anti-siphon valve to prevent gravity under static conditions.