Check Valve
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Products design Features
Check valves are used in pipes under pressures between PN1.6 ~ 42.0MPa (Class150 ~ 4500Lb), working temperatures -196 ~ 600℃, They are used in industries include oil, chemistry, pharmaceutical, fertilizer, and power generation to prevent the backward flux of the media.
Feature
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The products feature a reasonable structure, reliable seal, good performance and nice modeling.
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Either soft or hard seal can be selected for the product upon different working conditions. The sealing face is built up with Co-based carbide alloy, leaving a better wearability, corrosion and scrap resistance and a longer duration.
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Small opening pressure, the disc can be opened fully with a very small pressure differential.
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Inside-set bolt-bearing structure reduces leakage and reliable use.
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PN≥16.0MPa (class1500), the middle cavity uses a self-tightening sealing structure to have the sealing performance reinforced along with the pressure rise so as to ensure the sealing performance.
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Different parts materials and different sizes for flange, butt-welding are available for sensible combination according to different working facts and customers' requirements.
Main Parameter of the products
| Serial Models | H44H(Y), H64H(Y), H41H(Y), H61H(Y), H42H(Y), H62H(Y), H74H(Y), H71H(Y), H76H(Y), H72H(Y) |
|---|---|
| Pressure Grade Range | PN1.6 ~ 42.0 MPa (Class 150 ~ 4500) |
| Nominal Diameter Range | DN15 ~ 1000 mm (1/2" ~ 40") |
Products Performance Specification
| Pressure Type | Rating | Shell Test (MPa) | Seal Test (MPa) | Applicable Temperature (°C) | Applicable Medium |
|---|---|---|---|---|---|
| PN | 1.6 | 2.4 | 1.76 | -196 ~ 600 | Water, Oil, Steam, etc. |
| PN | 2.5 | 3.75 | 2.75 | -196 ~ 600 | Water, Oil, Steam, etc. |
| PN | 4.0 | 6.0 | 4.4 | -196 ~ 600 | Water, Oil, Steam, etc. |
| PN | 6.4 | 9.6 | 7.04 | -196 ~ 600 | Water, Oil, Steam, etc. |
| PN | 10.0 | 15.0 | 11.0 | -196 ~ 600 | Water, Oil, Steam, etc. |
| PN | 16.0 | 24.0 | 17.6 | -196 ~ 600 | Water, Oil, Steam, etc. |
| PN | 25.0 | 37.5 | 27.5 | -196 ~ 600 | Water, Oil, Steam, etc. |
| Class | 150 | 3.0 | 2.2 | -196 ~ 600 | Water, Oil, Steam, etc. |
| Class | 300 | 7.5 | 5.5 | -196 ~ 600 | Water, Oil, Steam, etc. |
| Class | 600 | 15.0 | 11.0 | -196 ~ 600 | Water, Oil, Steam, etc. |
| Class | 900 | 22.5 | 16.5 | -196 ~ 600 | Water, Oil, Steam, etc. |
| Class | 1500 | 37.5 | 27.5 | -196 ~ 600 | Water, Oil, Steam, etc. |
| Class | 2500 | 63.0 | 46.2 | -196 ~ 600 | Water, Oil, Steam, etc. |
