Plastic Back Pressure/Relief Valves
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The Chemline SB Series Back Pressure/Relief Valve has two functions. As a Back Pressure Valve, installed in-line downstream of a pump, the back pressure below the metering pump is maintained. When installed in the branch of a tee it is a Pressure Relief Valve. The valve stays closed until inlet pressure reaches the set pressure which is adjusted by turning the spring tensioning bolt. Inlet pressure acts on the Teflon® control diaphragm opening the valve, allowing excess pressure to flow downwards through the orifice. The SB10/11 Series is very sensitive to pressure changes and requires low overpressure to fully open.
Sensitive and Reliable
† PP and PVDF spigot ends have DIN dimensions and will butt fuse directly to Chemline PP and PVDF piping systems.
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