Pressure Sustaining Valve is a hydraulically operated, diaphragm actuated control valve that sustains minimum preset upstream (back) pressure and opens fully when line pressure is in excess of the setting.
Unitized flexible super travel (FST) diaphragm and guided plug:
a) Accurate and stable regulation with smooth closing.
b) Requires low opening and actuation pressure.
c) Prevents diaphragm erosion and distortion.
Ultra – high flow capacity – low pressure loss.
User friendly design simple in-line inspection and service.
Engineered plastic valve with industrial grade design.
Highly durable, chemical and cavitation resistant, no internal bolts and nuts.