Sierra Model 1800 is a hydraulic check valve is a diaphragm actuated control valve that is used to prevent reverse flow in any pipe line. It functions as a two position valve, either fully open or fully closed
The mode 1300PB Safety- ACV valve is a hydraulically operated, diaphragm actuated, control valve that saves the pipe line by shutting off the water if the line was broken
The model 1200R Pressure Relief Valve is a hydraulically operated, diaphragm actuated automatic control valve. When there is an excess pressure in the line the valve opens to flow out the excess water maintaining a constant pressure in the line and preventing the line from bursting.
The model 1200-18 Pressure Sustaining Valve with Check Feature is a hydraulically operated, diaphragm actuated automatic control valve. When installed in-line, they sustain minimum back pressure thus prioritizing pressure zones, preventing line emptying, and pump over load
The model 1900 pump control valve is an electrically operated – hydraulically actuated control valve used to control surges caused by pump starting and stopping and provide adjustable back pressure on pump while it is running.
The model 1200R11 Surge Anticipating Valve is a hydraulically operated, diaphragm actuated automatic control valve. This valve opens in response to the pressure drop that is related to the sudden stoppage of a pump thus eliminating line surges