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Dungong Valve (Shanghai) Co., Ltd.

Mobile phone: 13918861646

Telephone: 021-33656988

Mailbox: dungongvalve@163.com

Website: www.sh-dgvalve.com

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Address: No. 5118, Nanfeng Road, Fengxian District, Shanghai

Z41X, RRHX soft-sealed rising stem elastic seated gate valve

Z41X, RRHX soft-sealed rising stem elastic seated gate valve

  • category:Gate
  • Views:Times
  • Release date:2020-12-14 14:55:04
  • product description
  • Performance characteristics
  • technical parameter

The principle function of Z41X, RRHX soft-sealed rising stem elastic seat-sealed gate valve:

The gate valve of the gate valve manufacturer is a control component in the pipeline system that moves the gate plate along the vertical direction of the channel axis to cut off the flow of the medium in the pipeline system. During use, the valve must be fully open or fully closed and cannot be used to adjust the flow.

When the gate valve is closed, the sealing surface can only rely on the medium pressure to seal, that is, only rely on the medium pressure to press the sealing surface of the gate to the valve seat on the other side to ensure the sealing of the sealing surface, which is self-sealing. Most gate valves adopt forced sealing, that is, when the valve is closed, the gate must be forced against the seat by external force to ensure the sealing performance of the sealing surface.

    The elastic seat sealing gate valve adopts novel structural design, strict manufacturing technology and high-performance new materials, which overcomes the defects of traditional gate valves such as poor sealing, internal parts, especially the ram, easy to rust, rubber elastic fatigue and easy aging, and reliable sealing performance. The operation is light and fast, the maintenance is simple and convenient, and the service life is long. It is suitable for domestic water system, water supply and drainage system, sewage treatment system, chemical fluid conveying system, etc. It is used as a cut-off device on fluid pipelines in construction, urban environmental protection, petrochemical, medicine, food, metallurgy, textile, power and other industries.

Performance characteristics of Z41X, RRHX soft-sealed rising stem elastic seat-sealed gate valve:

    ① Ductile iron precision casting shell: The valve body and valve cover are made of ductile iron, which has high strength and corrosion resistance, and the valve seat and valve body are integrally formed by precision casting;

    ②Full-diameter flat-bottomed flow path: when the valve is fully opened, the gate is completely lifted away from the flow path, and there is no groove at the bottom of the valve seat, which is not easy to accumulate debris, which is equivalent to a straight pipeline and has the lowest flow resistance;

    ③All rubber-coated rams: high-performance rubber wraps all the frame, the cast iron is completely isolated from the medium, no corrosion, the rubber is softly sealed, firmly bonded to the frame, and the whole is thermally vulcanized;

    ④Integral copper nut: The gate nut is integrally connected with the frame, and there is no idle movement and no feeding off phenomenon;

    ⑤ Ram guide rail system: there is a guide rail system between the valve body and the gate. When the gate is sealed, the bearing water pressure cloth is offset, and the rubber is not contacted and worn when lifting, preventing the valve stem from bending;

    ⑥Stainless steel stem: stainless steel corrosion-resistant stem, trapezoidal thread rolling processing, smooth and wear-resistant thread, effectively reducing operating torque and increasing service life;

    ⑦Double thrust bearing (dark rod type DN≤300): The neck of the valve stem is equipped with double thrust bearings, and the inverted valve stem avoids being washed out by water pressure;

    ⑧ Stem axial seal (dark stem type): Three O-ring seals, axial self-sealing under the action of water pressure, without the trouble of packing seal adjustment, the top retaining ring prevents external impurities from entering the shaft seal.

    Remarks for Resilient Seat Seal Gate Valve:

    RVXX stands for rising stem gate valve, RVXP stands for attached labor saving device;

    RRXX stands for rising stem gate valve;

    RRHX stands for exposed rod type with handwheel;

    RREX means exposed pole type with electric operating device;

    RVCX means non-rising rod type with transmission cap;

    RVHX means non-rising rod type with handwheel;

    RVHS stands for non-rising bar signal display;

    RVEX means non-rising rod type with electric operating device;

    RVCH stands for non-open pole type horizontal operating device with transmission cap;

    RVHH stands for non-rising rod type with handwheel horizontal operating device.


Technical parameters of Z41X, RRHX soft-sealed rising stem elastic seated gate valve:

Nominal pressure   ﹝MPa﹞

test pressure﹝MPa﹞

proper temperature

Applicable medium

case

seal

1.0

1.5

1.1

≤80℃

Water, oil, sewage, sea water

1.6

2.4

1.76

 

Z41X, RRHX soft-sealed rising stem elastic seat-sealed gate valve material:

Part Name

Material

Valve body

Nodular cast iron

gate

Ductile iron + EPDM/NBR

Stem

stainless steel

O-ring

Nitrile rubber

Stem nut

Xiqinggang

Handwheel

cast iron

 

Dimensions of Z41X, RRHX soft-sealed rising stem elastic seat-sealed gate valve:

闸阀生产厂家


The way to DN

Dimensions(mm)

Connection size(mm)

mm

inch

L

H

Ho

Do

D

D1

D2

b

t

Z-Φd

40

1-1/2"

165

75

310

160

150

110

84

19

3

4-19

50

2"

178

83

320

160

165

125

99

19

3

4-19

65

2-1/2"

190

93

370

180

185

145

118

19

3

4-19

80

3"

203

100

410

180

200

160

132

19

3

8-19

100

4"

229

110

450

250

220

180

156

19

3

8-19

125

5"

254

125

530

280

250

210

184

19

3

8-19

150

6"

267

143

600

320

285

240

211

19

3

8-23

200

8"

292

170

730

380

340

295

266

20

3

8-23

250

10"

330

198

850

400

395

350

319

22

3

12-23

300

12"

356

223

960

450

445

400

370

25

4

12-23

350

14"

381

253

1070

450

505

460

429

25

4

16-23

400

16"

406

283

1180

500

565

515

480

25

4

16-28

450

18"

432

308

1300

500

615

565

530

26

4

20-28

500

20"

457

335

1415

600

670

620

582

27

4

20-28

600

24"

508

390

1630

600

780

725

682

30

5

20-31

700

28"

610

448

1810

600

895

840

794

33

5

24-31

800

31-1/2"

660

508

2040

600

1015

950

901

35

5

24-34

900

35-1/2"

711

558

2240

600

1115

1050

1001

38

5

28-34

1000

39-1/2"

811

615

2450

600

1230

1160

1112

40

5

28-37


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Cell phone:13918861646

phone:021-33656988

URL:www.sh-dgvalve.com 

address:No. 5118, Nanfeng Road, Fengxian District, Shanghai

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