Pressure Relief/Sustaining Valve
730-M5-M5M-M5L
700 Large Size Series
Waterworks
Pressure relief/sustaining hydraulically operated control valve that can fulfill either of two separate functions: When installed in-line, it sustains minimum pre-set, upstream (back) pressure regardless of fluctuating flow or varying downstream pressure. When installed as a “branched from the line” circulation valve it relieves excessive line pressure when above maximum pre-set.
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- Hydrodynamic wide globe valve body provides:
- Higher flow coefficient (Kv; Cv) than standard globe valves
- Higher resistance to cavitation damage
- In-line serviceable
- Valves are suitable for working with all types of command: Hydraulic, Electric and Pneumatic.
- Self-operated valves that can work without an external source of power
- Wide range of options and accessories:
- Visual position indicator
- Limit switches
- Analog opening output
- Large selection of control accessories
- Large inspection and service ports (700-M5L)
Typical Applications
- Water delivery system ‑ Prioritizing upstream demand to maintain pressure
- Pumping stations - Ensure operating point on pump curve
- Pumping stations - Circulation during low demand
- District Cooling Plants (DCP) - Process control