OVERVIEW 1. Booster (BV) The valve shall be installed at the pump exit to prevent surge and open slowly upon activation. The valve shall close slowly until the position indicator contactor stops the pump. Shall be basic hydraulic double-chambered valve with 3-way pilot, non-return and 2 solenoids. N.O. with spring, 2 solenoids and position indicator with closing contactor. Also shall provide command-independent non-return function. N.C. with spring, 1 solenoid and position indicator with closing contactor. Also shall provide non-return function when the opening command is cancelled. Broad flow range (see table under Technical Data). Power causes the valve to slowly open. Power disconnection causes it to slowly close. Solenoids shall be type Bakara or Asco. Standard: 220 VAC, 50HZ/12, 24, VDC 12, 24; other available to order. The position indicator provides a visual display of opening percentages, and a contactor for connection to the control panel enables pump operation to be stopped as the valve reaches the closed position (adjustable). typical installation - see Installing Open-Shut Valves The valve shall be installed in-line and shall be supplied to the installation site accompanied by double - grooved connection pipes to be welded to the line or with Quikcoup flanges. 2. Deep well (DW) The valve shall be installed perpendicular to the exit line from the pump and is designed to prevent entry of air and sand to the system and to reduce surge phenomena when the pump is turned on and off. The valve closes slowly after the pump starts to work, and opens slowly before pumping is discontinued, releasing the water into a source or suction pipe. Basic double-chambered hydraulic valve with 3-way pilot, solenoid, and shutter or needle valve. N.O. Broad flow range (see table under Technical Data). Installing an external command water filter in addition to the existing flushing in-line filter installed in all C-Valves is recommended. The valve is controlled using the pump control panel (hydraulic or electric control), N.C. solenoid with an N.O. valve. When the power supply is off, the valve is open. When the pump is activated power is fed into the solenoid, which slowly closes the valve. Releasing the power enables the valve to slowly open, until the position indicator provides an open contactor to turn the pump off. Solenoids shall be type Bakara or Asco. Standard: 220 VAC, 50HZ/12, 24, VDC 12, 24; other available to order. The position indicator provides a visual display of opening percentages, and a contactor for connection to the control panel enables pump operation to be stopped as the valve reaches the closed position (adjustable). typical installation - see Installing Pressure/Surge Dischargers. The valve shall be installed in-line and shall be supplied to the installation site accompanied by double - grooved connection pipes to be welded to the line or with Quikcoup flanges.

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