Ductile iron multifunctional pump control valve JD745X-16Q

JD745X multifunctional pump control valve consists of main valve and regulating valve and piping system, the valve body adopts DC type valve body, the main valve control chamber is diaphragm type or piston type with double control chamber structure, the control chamber is increased by one than general hydraulic control valve, which increases the control function of the main valve and realizes the multifunctional control of the pump outlet such as slow opening, full opening, slow closing and shutting off, etc., and realizes the multifunctional control of the pump outlet by a single valve and a single adjustment. Multifunctional control of water pump outlet. This valve is installed at the outlet end of the water pump, and sequentially realizes the functions of slow opening, full opening, quick closing and slow closing.

Working Principle

When the pump starts up, the water pressure acts under the main valve disc and the lower chamber of the control room, and this pressure makes the main valve open, and the water in the upper chamber of the control room is slowly discharged to the outlet end through the regulating valve B, and the main valve slowly opens. Setting the opening degree of the regulating valve can get the appropriate opening speed of the main valve. When the pump stops working, the inlet side of the water pressure drops rapidly, under the action of self-weight, spring pressure to quickly close most of the opening, preventing the backflow of water the rest of the opening by the control chamber of the upper chamber of the water pressure and the lower chamber of the water pressure under the joint action of the slow closure of the formation of a buffer, to prevent the pressure from increasing dramatically.

Product Features

1. Prevent water hammer effect is good, will be slow to open, non-return speed closure, slow closure and other elimination of water hammer technology integration, to prevent the opening of the pump does not hammer and stop the pump backflow and water hammer on the water supply pipeline and water pump damage.
2. Convenient operation, no need for another distribution control system for the valve, the valve with the opening and stopping of the pump automatically and sequentially complete the control function. By setting the opening degree of the regulating valve, suitable control parameters can be obtained.
3. The valve body features a full-bore, straight-through, streamlined design. It minimizes hydraulic loss and delivers excellent energy-saving performance.

Scope of Application

JD745X multifunctional pump control valve is used in the water supply system of high-rise buildings and other water supply systems of the pump outlet pipeline, to prevent and attenuate the water hammer of the pipeline when the pump is opened and closed, to prevent backflow of water to protect the pump, and to maintain pipeline safety.

Product Parameters

Product Size Reference