Pressure Sustaining Valve with Electric Override
Hydraulically operated, pressure relief/sustaining 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
circulation valve, it relieves excessive line pressure when above
maximum pre‑set. This valve is a double chamber configuration using
3‑way control, being extremely responsive regardless of operating
conditions, allowing full opening without the risk of hydraulic lock out.
In response to an electric signal the valve switches between regulation mode and a fully open mode to override the regulation and to reduce pressure loss across the valve to a minimum.
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Designed to - Stand up to the toughest conditions
- Excellent anti-cavitation properties
- Wide flow range
- High stability and accuracy
- Drip tight sealing
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Double chamber design
- Moderated valve reaction
- Protected diaphragm
- Optional operation in very low pressure
- Moderated closing curve
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Flexible design - Easy addition of features
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Obstacle free flow pass
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V-Port throttling plug (optional) - Very stable at low flow
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Compatible with various standards
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High quality materials
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In-line serviceable - Easy maintenance
Typical Applications
- Filtration system ‑ Fully open with minimum pressure loss during filtration, switching to regulation and sustaining the required pressure for efficient backflush
- Water delivery system - Prioritizing upstream over downstream demand
- Pumping stations - Ensure operating point on pump curve
Pressure Sustaining Valve
730-59-X
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