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WW Municipal 720-55

WW Municipal 720-55
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Pressure Reducing Valve with Solenoid ControlModel 720-55 ■ Flow and leakage reduction ■ Cavitation damage protection ■ Pressure zone isolation ■ Switching between “on-duty” valves ■ Auto-refreshing of reservoirs The Model 720-55 Pressure Reducing Valve with Solenoid Control is a hydraulically operated, diaphragm actuated control valve that reduces higher upstream pressure to lower constant downstream pressure regardless of fluctuating demand or varying upstream pressure. The valve opens and shuts off in response to an electric signal. Features and Benefits ■ Line pressure driven - Independent operation ■ Solenoid controlled □ Low power consumption □ Wide ranges of pressures and voltages □ Normally Open, Normally Closed or Last Position ■ In-line serviceable - Easy maintenance ■ Double chamber design □ Moderated valve reaction □ Protected diaphragm ■ Flexible design - Easy addition of features ■ Variety of accessories - Perfect mission matching ■ “Y” or angle, wide body - Minimized pressure loss ■ Semi-straight flow - Non-turbulent flow ■ Stainless Steel raised seat - Cavitation damage resistant ■ Obstacle free, full bore - Uncompromising reliability ■ V-Port Throttling Plug - Low flow stability Major Additional Features ■ Pressure management valve - 7PM-55 ■ Solenoid control & check feature - 720-25 ■ Downstream over pressure guard - 720-55-48 ■ High sensitivity pilot - 720-55-12 ■ Electrically selected multi-level setting - 720-55-45 ■ Electronic multi-level setting, Type 4T - 720-55-4T ■ Electric override - 720-55-59 See relevant BERMAD publ

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Operation The Model 720-55 is a pilot controlled valve equipped with an adjustable, 2-Way, pressure reducing pilot and a solenoid pilot. The restriction [1] continuously allows flow from the valve inlet into the upper control chamber [2]. The pilot [3] senses downstream pressure. Should this pressure rise above pilot setting, the pilot throttles, enabling pressure in the upper control chamber to accumulate, causing the main valve to throttle closed, decreasing downstream pressure to pilot setting. Should downstream pressure fall below pilot setting, the pilot releases accumulated pressure,...

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BERMAD Waterworks 700 Series Typical Applications Reservoir By-Pass [1] Pressure Reducing Valve with Solenoid Control Model 720-55 [2] Pump Control Valve Model 740 [3] Pressure Relief (Circulation) Valve Model 730 [4] Level Control Valve Model 750 The Model 720-55 is installed as a by-pass between the reservoir supply line and the pump discharge line to the distribution network providing four major advantages: n Saves energy and lowers costs by shortening pumping hours, when supply pressure is sufficient n Protects the distribution network from excessive supply pressure n Automatically...

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Technical Data Differential Pressure Calculation Size Range: DN40-900 ; 11/2-36” End Connections (Pressure Ratings): Flanged: ISO PN16, PN25 (ANSI Class 150, 300) Threaded: BSP or NPT Others: Available on request Valve Patterns: “Y” (globe) & angle, globe (DN600-900 ; 24”-36”) Working Temperature: Water up to 80°C ; 180°F Standard Materials: Body & Actuator: Ductile Iron Internals: Stainless Steel, Bronze & coated Steel Diaphragm: Synthetic Rubber Nylon fabric-reinforced Seals: Synthetic Rubber Coating: Fusion Bonded Epoxy, RAL 5005 (Blue) approved for drinking water or Electrostatic...

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