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JD745X multi-function hydraulic control valve

JD745X multi-function hydraulic control valve

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Describe
product description
 
The JD745X multi-function water pump control valve is an intelligent valve installed at the water pump outlet of the high-rise building water supply system and other water supply systems to prevent backflow, water hammer and water hammer. The valve has three functions of electric valve, check valve and water hammer eliminator, which can effectively improve the safety and reliability of the water supply system. The technical principle of slow opening, quick closing and slow closing to eliminate the water hammer is integrated to prevent the water hammer and the pump water hammer from being opened. Simply operate the pump motor to open and close the button, the valve can automatically open and close according to the pump operating rules, the flow is large, the pressure loss is small.
 
 
Multi-function pump control valve working principle
 
When the water pump is started, the water pressure acts on the lower part of the main valve disc and the lower chamber of the control room. This pressure causes the main valve to open, and the water in the upper chamber of the control chamber is slowly discharged to the outlet end through the regulating valve B, and the main valve is slowly opened. . Setting the opening of the regulating valve gives a suitable main valve opening speed. When the water pump stops working, the water pressure at the inlet end drops rapidly, and most of the opening degree is quickly closed under the action of self-weight and spring pressure, preventing the water from flowing back. The remaining opening degree is jointly caused by the water pressure in the upper chamber of the control chamber and the water pressure in the lower chamber. Slowly close, the closing speed slows down to form a buffer to prevent a surge in pressure. Setting the opening and opening ratio of the regulating valves A and B can obtain a suitable valve opening and closing speed.
 
Main technical parameters of multi-function water pump control valve
 

Serial number

Part Name

Material selection

1

Valve body

Gray cast iron, ductile iron, cast steel, stainless steel

2

cap

Gray cast iron, ductile iron, cast steel, stainless steel

3

spring

2CR13, stainless steel

4

Diaphragm plate

25#

5

Diaphragm

Nitrile rubber

6

Valve stem

2CR13

7

Valve flap

25#+NBR

8

Seat

stainless steel

 

多功能水泵控制阀主要外形连接尺寸

外形尺寸(mm)

DN

L

H

D

D1

D2

DN50

203

293

99

125

165

DN65

216

328

118

145

185

DN80

248

364

132

160

200

DN100

283

418

156

180

220

DN125

330

481

184

210

250

DN150

356

543

211

240

285

DN200

444

673

266

295

340

DN250

533

792

319

350

395

DN300

600

927

370

400

445

DN350

622

957

429

460

505

DN400

698

1188

480

515

565

DN450

775

1218

530

565

615

DN500

811

1256

582

620

670

DN600

900

1600

682

725

780

DN700

980

1750

794

840

895

DN800

1120

1900

901

950

1015

DN900

1220

2100

1001

1050

1115

DN1000

1320

2400

1112

1160

1230