- 743 – Booster Pump Control & Pressure Sustaining Valve AS5081 / Watermark
- 748 – Pump Circulation, Pressure Sustaining Control Valve AS5081 / Watermark
- WW753-66 Sigma EN ES Level Control and Pressure Sustaining Valve with Bi-Level Vertical Float AS5081 , WaterMark
- WW753-65 – Level Control and Pressure Sustaining Valve with Bi-Level Electric Float AS5081 , WaterMark
- WW730 – Pressure Relief/Sustaining Valve AS5081 / WaterMark
- WW730-55 – Pressure Relief/Sustaining Valve with Solenoid Control AS5081 / WaterMark
- WW736 – Differential Pressure Sustaining Valve AS5081 / WaterMark
- WW723 – Pressure Sustaining and Reducing Valve AS5081 / WaterMark
Pressure Sustaining Valves
A pressure sustaining valve maintains a minimum set pressure upstream of the valve, catering for fluctuations in pressure on either side of the value. This is achieved by the valve gradually opening or closing to maintain a set pressure. See Bermad’s range of pressure sustaining valves below.