Ductile Iron Silencing Check Valve

Ductile Iron Silencing Check Valve
Details:
The ductile iron silent check valve serves as a critical barrier against backflow in pipeline networks, ensuring unidirectional flow to safeguard pumps and equipment. Its technical superiority stems from the synergy between ductile iron's structural integrity and EPDM's dynamic sealing capabilities, maintaining reliability under high-frequency cycling or thermal stress.
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Description
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Ductile Iron Silent Check Valve: Reliable Core Component for Fluid Control

 

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Product Introduction

 

The ductile iron silent check valve serves as a critical barrier against backflow in pipeline networks, ensuring unidirectional flow to safeguard pumps and equipment. Its technical superiority stems from the synergy between ductile iron's structural integrity and EPDM's dynamic sealing capabilities, maintaining reliability under high-frequency cycling or thermal stress. The internally biomimetic flow channel, validated by computational fluid dynamics, reduces pressure loss by over 15%, optimizing system efficiency. With customizable stem materials (galvanized/2Cr13/stainless steel), this valve excels in challenging environments such as seawater treatment and chemical processing, offering a balanced blend of durability and cost efficiency.

Product Features

 

Crafted from high-strength ductile iron, the silent check valve integrates the corrosion resistance of cast iron with the mechanical resilience of steel, effectively countering water hammer effects and pressure fluctuations in pipelines. Its advanced noise suppression technology utilizes precision-engineered disc movement paths and fluid channel geometry to minimize impact vibration and noise during closure, achieving operational sound levels below industry benchmarks. The EPDM (Ethylene Propylene Diene Monomer) seat material withstands temperatures up to 80°C, delivering exceptional elasticity and long-term sealing reliability. Flexible stem options include galvanized steel, 2Cr13 stainless steel, and 304 stainless steel, tailored for diverse corrosive media environments.

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Product Advantages

 

Silent Operation Excellence

Multi-stage buffering mechanisms and aerodynamically profiled discs synergistically reduce fluid turbulence, enabling near-silent closure for enhanced environmental compatibility.

Durable Sealing Performance

The EPDM seat maintains high resilience under thermal cycling and frequent operation, preventing leakage and extending service life.

Cost-Effective Maintenance

Modular construction allows targeted component replacement without full valve disassembly, minimizing maintenance complexity and operational downtime.

Versatile Adaptability

Compatible with installation angles from 0° to 90° and pipe diameters from DN50 to DN600, ideal for water supply, HVAC, petrochemical, and other industrial applications.

 

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Model number

Nominal pressure

Shell test pressure

Seal test pressure

Application medium

Working temperature

H41X-10

1.0MPa

1.5MPa

1.1MPa

Water and weak corrosive fluid

0-80℃

H41X-16

1.6MPa

2.4MPa

1.76MPa

Water and weak corrosive fluid

0-80℃

 

Model number

Body

Sealing ring

Spring

H41X-10

Cast iron or stainless steel

Butyl rubber (NBR)

1Cr18Ni9Ti stainless steel wire

H41X-16

Cast iron or stainless steel

Butyl rubber (NBR)

1Cr18Ni9Ti stainless steel wire

 

Nominal pressure

Nominal diameter

Size (mm)

Nominal pressure

Nominal diameter

Size (mm)

L

D

K

b

Z-Ød

L

D

K

b

Z-Ød

1.0

40

110

145

110

18

4-18

1.6

40

110

145

110

18

4-18

50

110

160

125

20

4-18

50

110

160

125

20

4-18

65

120

180

145

20

4-18

65

120

180

145

20

4-18

80

130

195

160

22

8-18

80

130

195

160

22

8-18

100

150

215

180

24

8-18

100

150

215

180

24

8-18

125

180

245

210

26

8-18

125

180

245

210

26

8-18

150

180

280

240

26

8-22

150

180

280

240

26

8-22

200

210

335

295

28

8-22

200

210

335

295

30

12-22

250

230

390

350

28

12-22

250

230

405

355

32

12-26

300

300

440

400

28

12-22

300

300

460

410

32

12-26

350

365

500

460

30

16-22

350

365

520

470

36

16-26

400

410

565

515

32

16-26

400

410

580

525

38

16-30

450

430

615

565

32

20-26

450

430

640

585

40

20-30

500

450

670

620

34

20-26

500

450

715

650

42

20-33

600

510

780

725

36

20-30

600

510

840

770

48

20-36

 

Technical Parameters 

 

 

Size

DN32-DN600

DN650-DN2000

Working pressure

16Bar

10Bar

Shell

24Bar

15Bar

Seal

18Bar

11Bar

Operating Temperature

-45°C~+150°C

Operating Environment

Ballast and bilge system Chemical processing Desalination plants
Drilling rigs Drinking water Dry powder
Food and beverage Gas plants HAVC
Mining industry Paper industry Sand handling
Seawater Sugar industry Thermo technical water treatment Waste water

Driving Method

Hand Lever Worm Gear Electric Pneumatic

 

Executive Standards

 

 

Design Standard

EN 593, MSS SP67, API 609, BS 5155

Inspection & Test

API 598, ISO 5208, EN 12266

End Standard

ANSI B16.1 CL. 125LB & B16.5 CL. 150LB

AS 2129 Table D & E

BS 10 Table D & E

DIN 2501 (PN6, PN10, PN16)

EN 1092 (PN6, PN10, PN16)

ISO 2531 (PN6, PN10, PN16), 7005 (PN6, PN10, PN16)

KS B / JIS B 1511 / 2210 (5K & 10K)

MSS SP44 CL. 150LB

AWWA C207

SABS 1123 Table 1000/3 & Table 1600/3

Face to Face

ISO 5752, EN 558, MSS SP67, API 609, DIN 3202

Top Flange

ISO 5211

 

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