
BERMAD IrrigationLevel Control Valve with Bi-Level Electric Float WW-750-65 ■ Reservoir filling □ Very low supply pressure □ Low noise generation □ Energy cost critical systems □ Systems with poor water quality ■ Reservoir outflow □ Distribution routing □ Sewerage "fill and flush” systems The Model 750-65 Level Control Valve with Bi-Level Electric Float is a hydraulically operated, diaphragm actuated control valve that controls reservoir filling in response to an electric float switch signal, opening at pre-set low level and shutting off at pre-set high level. The double chamber actuated Model 750-65-B is powered to fully open and close even at very low pressure. Major Additional Features ■ Line pressure driven - Independent operation ■ Bi-Level electric float switch □ On/off service □ Low cavitation damage □ No hydraulic sensing tubes □ Simplified float installation and setting □ Suited to various float switches ■ Solenoid controlled □ Low power consumption □ Normally Open or Normally Closed main valve ■ Double chamber □ Full powered closing □ Low throttling noise □ Non-slam closing characteristic □ Protected diaphragm ■ External installation □ Easy access to valve and float □ Less wear and tear ■ In-line serviceable - Easy maintenance ■ Full powered opening & closing - 750-65-B ■ Closing surge prevention - 750-65-49 ■ Hydraulic float backup - 750-65-66 ■ Altitude pilot backup - 750-65-80 ■ Relief override - 750-65-3Q ■ Pressure sustaining valve - 753-65 ■ Flow control valve - 757-65-U ■ Level sustaining - 75A-65 See relevant BER
Open the catalog to page 1BERMAD Irrigation WW-700 Series Operation The Model 750-65 is a solenoid controlled valve equipped with a bi-level electric float switch* and a solenoid pilot.** The float switch [1] closes at pre-set low level, energizing the solenoid [2], and opens at pre-set high level, de-energizing it. Should the level drop, the solenoid is energized, causing the upper control chamber [3] to vent, opening the main valve. Should the level rise, the solenoid is de-energized, and pressure is applied to the upper control chamber harnessing line pressure to close the main valve. For 8” (200 mm) valves and larger,...
Open the catalog to page 2Typical Applications Reservoirs vary in their characteristics - location, elevation, filling & emptying, flow & pressure, surface area, etc. These various characteristics require various level control valve solutions. The Model 750-65 is the ideal solution for level control in reservoirs - shallow and deep, low and high elevation, rooftop and basement, in water towers, and wherever electric power is available. Pumping to Uphill Reservoir In a reservoir system where a pump provides pressure, consumers are prioritized over reservoir filling by installing the Model 753-65 Level Control and Pressure...
Open the catalog to page 3BERMAD Irrigation WW-700 Series WW-750-65 For full technical details, refer to Engineering Section. Technical Data Flow Chart Data is for Y-pattern, flanged, PN16 valves Weight is for PN16 basic valves “C” enables removing the actuator in one unit “L”, ISO standard lengths available For more dimensions and weights tables, refer to Engineering Section Flow Rate - m3/h Data is for Y-pattern, flat disk valves For more flow charts, refer to Engineering Section Main Valve Control System Valve Patterns: “Y” (globe) & angle Size Range: 11/2–32” (40-800 mm) End Connections (Pressure Ratings): Flanged:...
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