Back Pressure Valves and Pressure Relief Valves

The Top Valve line of diaphragm style Back Pressure and Pressure Relief valves was designed to ensure accurate pumping and protect your pipeline.

The valve(s) are factory set at 50 PSIG with a field adjustment range of 15-150 PSIG*. Other factory set pressure ranges (within the range of the valve) are available upon request.

Diaphragm Back Pressure Valves serve two primary functions. 

The first is to provide a constant discharge pressure on the pump, which improves the performance, efficiency and consistency of the delivered volume. 

Secondly, the valve performs as an anti-siphon mechanism against positive or negative pressures in the downstream line. 

The valve is designed to allow for the venting of air into the downstream pipeline. This provides for easier priming of metering pumps that function under a suction lift. 

This is accomplished by a simple adjustment of the handle. The valve is available with an optional gauge port, pre-plugged at the factory or can be ordered complete with gauge to suit application. 

This eliminates the need to install extra fittings in the line to accommodate the addition of a gauge for the purpose of reading and setting of pressure.