Wafer lift check valve

Technical Parameter

Product model: H71W/H/Y

Nominal diameter: DN 50~1200mm

Nominal pressure: PN1.6~4.0MPa

Working temperature: ≤350℃

Applicable medium: water, oil, steam, acidic medium, etc.



Product Detail

Product Description

Wafer connection lift check valve, also known as wafer check valve, is mainly composed of valve body, valve disc, spring, etc. It can be installed in various pipeline systems horizontally or vertically to prevent the backflow of the medium. The advantages of small size and light weight. The valve disc of the valve closes quickly, the water hammer pressure is small, the flow channel is smooth, the fluid resistance is small, the action is sensitive, and the sealing performance is good. It is mainly suitable for clean medium, not suitable for pipelines containing solid particles and high viscosity medium. It can be installed at the outlet of the pump to avoid water hammer, water hammer sound and destructive impact, achieve the purpose of preventing backflow and protecting equipment, and has better energy saving effect.


Product Features

1. The product structure is short in length, small in size and light in weight.

2. The sealing flap can choose soft sealing or hard sealing material according to different working conditions, and the sealing performance is good.

3. Both horizontal and vertical pipes can be used, and the installation is convenient.

4. The valve disc closes quickly and the water hammer pressure is small.

5. The material of the parts and the form and size of the valve end face can be reasonably selected according to the actual working conditions or user requirements to meet various engineering needs.


Material of main parts

Specifications

Body

Disc

Spring

H71H-16Q、H71H-25Q

QT400-15

25

50CrCA

H71W-25H、H71W-40H

2Cr13

1Cr13

1Cr18Ni9Ti

H71W-16P、H71W-25P

ZG1Cr18Ni9Ti

1Cr18Ni9Ti

1Cr18Ni9Ti


Main performance specifications

Model

PN(MPa)

Test pressure PS(MPa)

Operating temperature(℃)

Applicable media

Case

Seal

H71W-16T

1.6

2.4

1.76

≤200

Water, steam, oil, etc.

H71H-25Q

2.5

3.75

2.75

≤235

H71W-25H

≤300

H71W-25P

≤200

Corrosive media such as nitric acid

H71W-40H

4.0

6.0

4.4

≤300

Water, steam, oil, etc.

H71W-40P

≤200

Corrosive media such as nitric acid


Main external connection dimensions

DN(mm)LD
1.62.54.0
1525484848
2031.5585858
2535.5686868
3240808080
4045909090
5056105105105
6563125125125
8071140140140
10080160165165
125110190195195
150125215225225
200160270285290
250200330340350
300250385400415