Ultra-thin check valve

Technical Specifications

Product model: H74W/H

Nominal diameter: DN40~400mm

Nominal pressure: PN1.6~2.5MPa

Operating temperature: -29°C~600°C

Applicable medium: oil, water, acid and alkali and other liquids

Sales Hotline:

0086-21-59110018

Product Details

Product Description

Wafer ultra-thin check valve is a disc type ultra-thin check valve. It adopts short structure size and single disc design. Compared with the traditional swing check valve, this series of valves has no external leakage, Can be installed in any position, good sealing performance, low linear vibration, low pressure drop and zero seat ring wear advantages. It is mainly suitable for water supply system, petroleum, chemical industry, metallurgy and other industrial sectors, and it is more suitable for places with limited installation space.



Product Features

1. The structure is very short in length, small in size and light in weight, which brings great convenience to the installation, handling and storage of pipes for the valve, and can save a lot of materials and reduce costs.

2. The valve is an integral structure, simple and compact, the impact force is small when the valve is closed, the water hammer pressure is small, the valve life is long, and the reliability is high.

3. It can be installed horizontally or vertically, and it is light in weight, and it is not necessary to set a support for the valve.

4. The flow channel is smooth, the fluid resistance is small, and the valve disc can be fully opened under a small pressure difference.


Main performance parameters

Model Work pressure(MPa) Proper temperature(℃) Applicable media Body material
H74X-10C/16C/25C 1.0~2.5 -29~80 Water, oil Carbon Steel/Stainless Steel
H74H-10C/16C/25C/40C 1.0~4.0 -29~425 Water, steam, oil Carbon Steel/Stainless Steel
H74W-10P/16P/25P/40P 1.0~2.5 ≤150 Nitric acid Stainless steel
H74Y-40P 4.0 ≤150 Nitric acid Stainless steel


Main external connection dimensions

DN(mm) L D1 D
PN1.0、1.6MPa PN2.5、4.0MPa 1.0MPa 1.6MPa 2.5MPa 4.0MPa
50 19 19 25 109 109 109 109
65 19 19 38 129 29 129 129
80 19 19 46 144 144 144 144
100 19 19 71.5 164 164 170 170
125 19 19 95 194 194 196 196
150 19 29 114 220 220 226 226
200 29 29 140 275 275 286 293
250 29 38 188 330 331 343 355
300 38 51 216 380 386 403 420
350 44 51 263 440 446 460 477
400 51 51 305 491 495 517 549
450 60 76 356 541 558 567 574
500 64 83 406 596 620 622 626
600 70 90 482 698 732 734 745
700 80 90 562 813 804 831 -
800 90 100 464 918 912 942 -
900 90 100 738 1018 1012 1040 -
1000 100 120 846 1124 1126 1155 -