Integral check valve
The Integral Check Valve is engineered for seamless backflow prevention in pipelines with compact installation requirements. Its one-piece design enhances structural integrity and minimizes leakage. Constructed from durable materials, it ensures long-term operation in water, oil, chemical, and industrial fluid systems, with low maintenance and reliable automatic disc response.
Integral check valve
The Integral Check Valve is designed as a compact, one-piece valve for preventing reverse flow in pipelines. Its integral structure reduces potential leak points, increases strength, and allows installation in tight spaces without sacrificing performance.
Available in soft or metal seat designs, the valve ensures leak-tight performance. Suitable for horizontal or vertical installation, it protects pumps, compressors, and process systems from backflow. Durable materials such as stainless steel, carbon steel, or alloy steel provide corrosion resistance and long service life.
Manufactured and tested according to industrial standards:
Integral check valve
| Parameter | Specification |
|---|---|
| Product Name | Integral Check Valve |
| Valve Type | One-Piece Lift Check Valve |
| Nominal Size | DN15 – DN600 |
| Pressure Rating | PN10 – PN40 |
| ANSI Class | Class 150 – Class 300 |
| Body Material | Stainless Steel, Carbon Steel, Alloy Steel, Ductile Iron |
| Disc Material | Stainless Steel, Bronze |
| Seat Material | Soft Seat (PTFE), Metal Seat |
| Connection Type | Flanged, Threaded, Butt Weld |
| Operation | Automatic Lift Check |
| Temperature Range | -20°C to +150°C |
| Leakage Standard | API 598 / ISO 5208 |
| Design Standard | ASME B16.34, DIN, GB Standards |
| Applicable Media | Water, Oil, Steam, Industrial Fluids |
Integral check valve
Prevents reverse flow, protects pumps and pipelines.
Ensures unidirectional flow in heating and cooling circuits.
Protects equipment from backflow in chemical, petrochemical, and manufacturing lines.
Used for condensate and steam protection in medium and low pressure networks.
Maintains integrity of sprinkler and hydrant systems.
Material customization plan
Customized 316L stainless steel valves forGerman chemical enterprises. Resistant tostrong corrosion, suitable for their acidicmedium transportation systems, with aservice life extended to over 8 years.
Structural optimization design
For the Saudi desert project, the valve stemsealing structure was changed to a doublebellows design to address the leakage issuein the high-temperature and dustyenvironment, and it was highly recognizedby the customers.
Interface standard adaptation
Customized API 600 standard valves for acertain company in the United States. Theflange size is fully compatible with ANSIB16.5, ensuring zero error during on-siteinstallation and reducing the constructionperiod by 30%.
