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AX742X Safety Relief / Holding Valve


AX742X Safety Relief / Holding Valve
Stable quality: implement quality monitoring throughout the process, meticulous and comprehensive detection!

Reasonable price: efficient internal cost control, reducing expenses and benefiting customers!

Fast delivery: advanced production lines, sufficient stocking, shortening the delivery time!
Sales: 021-31007323
Fax: 021-333321522
Technology: 021-31007323

product manual Pledge Order process

 

  Product name : Safety Pressure Relief / Holding Valve Product model : AX742X
   Driving method : Hydraulic Connection form : Flange
   Structure form : Full channel, DC, streamlined    Sealing material : rubber
   Pressure range : ~2.5 MPa 1.0 to 2.5 MPa    Nominal diameter : 0-DN16 00 DN4 0-DN16 00
   Common materials : Carbon steel, stainless steel    Technical consultation : 021-31007323

是国内著名〖 AX742X安全泄压/持压阀 〗制造商,也是国内大型【 水力控制阀 】生产商之一,公司自成立以来始终围绕客户的需求并持续创新,为广大的代理商和企业客户提供〖AX742X安全泄压/持压阀 〗解决方案,质量可靠,价格实惠,故畅销全国各地,欢迎新老客户来电,来函,我们将为您提供最优质的服务。 Hushan Valve Manufacturing (Shanghai) Co., Ltd. is a well-known domestic manufacturer of [ AX742X Safety Pressure Relief / Holding Pressure Valve ] and one of the large domestic [ hydraulic control valve ] manufacturers. Since its establishment, the company has always focused on customer needs and continued innovation Provide AX742X Safety Pressure Relief / Holding Valve Solution for the majority of agents and enterprise customers . It is reliable in quality and affordable in price, so it sells all over the country. Welcome new and old customers to call us and email us. We will provide you with the best quality service.

Structural Features of AX742X Safety Pressure Relief / Holding Valve
 

由主阀和针型调节阀、导阀、球阀及接管系统组成,主阀阀体采用全通道、直流式、流线型设计,并采用膜片式或活塞式两类结构。 AX742X safety pressure relief / pressure holding valve is composed of main valve and needle type regulating valve, pilot valve, ball valve and takeover system. The main valve body adopts full channel, DC type, streamline design, and adopts diaphragm or piston type. structure.
This product uses the spring pressure of the pressure regulating pilot valve and the opening of the needle valve to set the outlet pressure, and stabilizes the outlet pressure through the feedback of the takeover system and the control room. This product uses a needle-type regulating valve, a pilot valve to enter
Hydraulic pressure self-control, no additional equipment and energy are needed, easy maintenance, little influence by inlet pressure and flow, high accuracy of pressure control, reliable pressure reduction and voltage stabilization.
 

Working principle of AX742X safety pressure relief / hold pressure valve
 

When the pipe feeds water from the water inlet, the water flows through the needle valve and enters the main valve control room. The outlet pressure acts on the pilot valve through the conduit. When the outlet pressure is higher than the pilot valve set value, the pilot valve closes and the control room stops draining water. At this moment
The valve controls the pressure in the room and closes the main valve, and the outlet pressure no longer rises . 当出口压力降到导阀设定压力时导阀开启,控制室向下游排水。 F745X diaphragm type remote control floating ball valve When the outlet pressure drops to the pilot valve set pressure, the pilot valve opens, and the control room drains downstream. Due to the discharge of the pilot valve
The amount of water is greater than the amount of water entering the needle valve, the pressure of the main valve control chamber drops, and the inlet pressure causes the main valve to open. In a stable state, the inlet and outlet of the control room are the same, the opening degree is the same, and the outlet pressure is the same. 定出口压力。 Adjust the pilot valve spring to set the outlet pressure.
 

Working characteristics of AX742X safety pressure relief / pressure holding valve
 

1. Stable and reliable pressure control. The pilot valve and main valve work continuously, and the downstream pressure changes continuously and smoothly, and it is less affected by the inlet pressure.
2. Easy to operate. After the working pressure is adjusted, the main valve is automatically adjusted when the upstream pressure or flow changes, which stabilizes the downstream pressure.
阀体采用了全通道、直流式、流线型设计。 3. The valve body adopts a full channel, DC type and streamlined design. Small hydraulic loss and good energy saving effect .
 

Functions and uses of AX742X safety pressure relief / hold pressure valve
 

This valve is generally installed upstream of the water supply pipe network system to achieve the function of reducing pressure and stabilizing its downstream pipe network or device.

This series of valve products are widely used for water pressure control of high-rise buildings, living areas or other water supply network systems .
 

V. Main Technical Parameters of AX742X Safety Relief / Holding Valve



Nominal pressure (Mpa)

Shell test pressure (MPa) Sealing test pressure (MPa) Pressure regulating range (MPa) Applicable medium Medium temperature (℃)

1.0

1.5

1.1

0-1.0

water

0-80

1.6

2.4

1.76

0-1.6

2.5

3.75

2.75

0-2.5


Material of main parts of AX742X safety pressure relief / holding valve



Part Name

Parts material

Body valve cover

WCB

Valve seat

Copper alloy / 2Cr13

O-ring seal

Nitrile rubber

Valve stem

2Cr13

spring

50CrVA

Cylinder liner piston (piston type)

2Cr13

Diaphragm (diaphragm type)

Fabric with nitrile rubber

Regulating valve

Copper alloy

filter

stainless steel


Seven, AX742X safety pressure relief / pressure holding valve connection size:


AX742X safety relief valve structure diagram
AX742X Safety Pressure Relief / Holding Valve Structure Diagram 1, Ball Valve 2, Pilot Valve 3, Ball Valve  

 

DN

L H D mm D1 mm b mm D2 mm n-Φd
mm mm PN1.0 PN1.6 PN2.5 PN1.0 PN1.6 PN2.5 PN1.0 PN1.6 PN2.5 PN1.0 PN1.6 PN2.5 PN1.0 PN1.6 PN2.5

40

240

270

150

150

150

110

110

110

18

18

18

88

88

84

4-17.5

4-17.5

4-18

50

240

270

165

165

165

125

125

125

20

20

20

102

102

99

4-17.5

4-17.5

4-18

65

270

340

185

185

185

145

145

145

20

20

twenty two

122

122

118

4-17.5

4-17.5

8-18

80

300

400

200

200

200

160

160

160

twenty two

twenty two

twenty four

133

133

132

8-17.5

8-17.5

8-18

100

350

440

220

220

235

180

180

190

twenty four

twenty four

twenty four

158

158

156

8-17.5

8-17.5

8-22

125

400

460

250

250

270

210

210

220

26

26

26

184

184

184

8-17.5

8-17.5

8-26

150

480

500

285

285

300

240

240

250

26

26

28

212

212

211

8-22

8-22

8-26

200

500

640

340

340

360

295

295

310

28

30

30

268

268

274

8-22

12-22

12-26

250

605

690

395

405

425

350

355

370

28

32

32

320

320

330

12-22

12-26

12-30

300

700

820

445

460

485

400

410

430

28

32

34

370

370

389

12-22

12-26

16-30

350

800

950

505

520

555

460

470

490

30

36

38

430

430

448

16-22

16-26

16-33

400

900

1400

565

580

620

515

525

550

32

38

40

482

482

503

16-26

16-30

16-36

450

1000

1580

615

640

670

565

585

600

32

40

42

532

550

548

20-26

20-30

20-36

500

1100

1600

670

715

730

620

650

660

34

42

44

585

585

609

20-26

20-33

20-36

600

1300

1815

780

840

845

725

770

770

36

48

46

685

685

720

20-30

20-36

20-39

700

1400

2040

895

910

960

840

840

875

40

54

50

800

800

820

24-30

24-36

24-42

800

1500

2350

1015

1025

1085

950

950

990

44

58

54

905

905

925

24-33

24-39

24-48

900

1700

2606

1115

1125

1185

1050

1050

1090

46

62

58

1005

1005

1028

28-33

28-39

28-48

1000

1900

2765

1230

1255

1320

1160

1170

1210

50

66

62

1110

1110

1140

28-36

28-42

28-56

1200

2050

2950

1455

1485

1530

1380

1390

1420

56

52

70

1330

1328

1350

32-39

32-48

32-55

1400

2200

3180

1675

1685

1755

1590

1590

1640

62

58

76

1530

1530

1560

36-42

36-48

36-60

1600

2400

3400

1915

1930

1955

1820

1820

1860

68

64

84

1750

1750

1780

40-48

40-55

40-60


Eight, AX742X safety pressure relief / pressure holding valve installation diagram:


AX742X Safety Relief / Holding Valve Installation Diagram

 

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