Product Details

JD745X diaphragm type muti-functional pump control valve is installed at the outlet of pump in high building water supplying system and other to prevent backward flow, water-hammering, water-hitting. The valve have the function of the following valve ; motorized valve, non return valve and water-hammering eliminator and can improve the safety in the system. the valve have slow-open,quick-close and slow-close function to prevent water-hammering when open or close pump. Only push the button for closing or opening pump and the valve can run according to the pump's operation procedure with large flow and little pressure loss. JD745X diaphragm type multifunctional pump control valve is for DN 600 or less valve.

working principle:

When the water pump is turned on, the inlet water pressure acts on the underside of the sliding plate. At the same time, the inlet water pressure also enters under the diaphragm through the small ball valve and small filter on the inlet side, causing the valve to slowly open to prevent water hammer from opening the pump. When the pump is stopped, the sliding plate quickly closes 90% under the action of its own weight and spring to prevent water from flowing back and causing water hammer when the pump is stopped. The remaining 10% is passed by the medium at the outlet end and enters the top of the diaphragm through the small ball valve and small filter. , the closing speed slows down to produce a buffering process to prevent pressure build-up and achieve silent closing.

Features:

1. Effective in eliminating water hammer. The technical principles of slow opening, quick closing and slow closing to eliminate water hammer are integrated to prevent the occurrence of water hammer when the pump starts and when the pump stops.

2. Easy to operate. Just operate the water pump motor opening and closing button, and the valve will automatically open and close according to the water pump operating procedures.

3. Good energy saving effect. The valve body adopts a streamlined DC design, with small pressure loss, large flow rate, small size and light weight.

4. The valve adopts a double-chamber transmission mechanism and is divided into two different pressure chambers. Its characteristics are: it can stop water and close smoothly without causing pressure fluctuations. In addition, the entire transmission mechanism can be disassembled as a unit without removing the diaphragm, making inspection easier.

Technical Parameters:

1. Working pressure: 1.0Mpa, 1.6Mpa, 2.5Mpa

2. Applicable media: raw water, clean water, oil and liquids with properties close to water

3. Medium temperature: 0-80C

4. Action pressure: ≤0.05Mpa

5. Slow closing time: 3~60S (adjustable)

6. Water hammer peak value: ≤1.3 times working pressure

7. Maximum reverse speed of water pump: ≤1.2 times rated speed of water pump

8. Resistance loss: 31% less than swing check valve

9. Structural form: diaphragm type

Main material