对夹式止回阀
对夹式止回阀
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wafer check valve

Valve Uses and Features:
[H71W Wafer Check Valve] is widely used in petroleum, chemical, power plants, construction, paper, mining and other industries. Applicable to water, steam, oil, nitric acid, acetic acid, strong oxidizing medium and other media.
1, the valve closed fast, small water hammer pressure, the valve stroke is short, the impact of small off valve
2, horizontal or vertical pipe can be used, easy to install
3, flow smooth, fluid resistance, sensitive, good sealing performance
4, the overall structure is simple and compact, attractive appearance, long life, high reliability


Product Specifications:

Model

Nominal diameter

test pressure

Operating temperature

Temperature

case

seal

H71H-16Q

1.6

2.4

1.76

≤235℃

Water, steam, oil, etc.

H71H-25Q

2.5

3.75

2.75

≤235℃

H71W-25H

≤300℃

H71W-25P

≤200℃

Nitric acid and other corrosive media

H71W-40H

4.0

6.0

4.4

≤300℃

H71W-40P

≤200℃

water vapor


Valve Parts Material

Model

Body

Valve

Spring

H71H-16Q H71H-25Q

QT400-15

25

50CrVA

H71W-25H  H71W-40H

2Cr13

1Cr13

1Cr18Ni9

H71W-25P  H71W-40P

ZG1Cr18Ni9Ti

1Cr18Ni9Ti

1Cr18Ni9Ti