Rubber check valve

Rubber check valve

Product Model: H44X

Nominal diameter: DN50mm-DN600mm

Nominal pressure: PN1.0MPa-1.6MPa

Applicable medium: water, oil

Applicable temperature: 0℃-80℃

Body material: cast iron, ductile iron

Connection method: flange connection

Design standard: GB/T12221

Length standard: GB/T9113, JB/T79

Test standard: JB/T9092, GB/T13927


Product overview 

Rubber flap check valve, also known as rubber flap check valve, is mainly composed of three main parts: valve body, valve cover and valve flap. Among them, the rubber flap is made of steel plate as the pressure-bearing part and reinforced nylon cloth as the backing, the outer layer is made of hot vulcanization integral rubber coating technology, and the valve seat adopts the ceramic spraying process to make the valve life longer. The valve adopts the design of the whole water basin, and has the characteristics of small head loss, not easy to accumulate debris, and easy maintenance. The valve is mainly suitable for water supply and drainage systems.


Features

Due to the small closing stroke, the rubber flap check valve can be fully opened with a stroke angle of only 35°, and the closing speed is fast. Fast closing, 10%-15% travel is slow closing. The slow closing time can be adjusted, the adjustment range is 1-15 seconds, and there is no indication of the opening and closing position of the oil cylinder to reduce the damage of water hammer to the pump.


Main part material

Part Name

Body

Bonnet

Disc

Material

Cast iron

Cast iron

Steel + reinforced nylon cloth


Main performance specifications

Model

Nominal pressure PN (MPa)

Sealing test pressure (MPa)

Shell test pressure (MPa)

Max working pressure (MPa)

Medium temperature

H44X-10

1.0

1.1

1.5

1.0

0-80℃

H44X-16

1.6

1.76

2.4


1.6




Main external dimensions

Model

DN

L

D

D1

dn

n

H44X-10/16

50

203

165

125

17.5

4

65

216

185

145

17.5

4

80

241

200

160

17.5

8

100

292

220

180

17.5

8

150

356

285

240

22

8

200

495

240

295

22

8

250

622

395

350

22

12

300

698

445

400

22

12

350

787

505

460

22

16

400

914

565

515

22

16

450

978

615

565

26

20

500

978

670

620

26

20

600

1295

780

725

30

20