Check Valves
2-Piece Internal Thread Check Valve
- 2-Piece Body: The valve body is constructed from two bolted pieces, offering a simple and economical structure.
- Internal Thread Connection: Utilizes universal internal thread standards for easy installation, suitable for various small-bore industrial and civil pipelines.
- Automatic Backflow Prevention: Automatically prevents reverse flow without any external power, protecting upstream equipment.
- Versatile Application: With a compact design, it can be adapted for various common media by selecting different materials (e.g., stainless steel, carbon steel).
The 2-Piece (2pc) Internal Thread Check Valve is a common, general-purpose check valve featuring a body constructed from two main bolted parts and threaded-end connections. This design facilitates assembly and potential maintenance while maintaining sufficient structural integrity. It operates automatically, using the pressure of the forward-flowing medium to open the disc, and closing via gravity and back-pressure when the flow ceases or reverses, thereby preventing backflow. It is widely used in small-bore pipelines for various common media such as water, oil, and gas.
Main Performance Specification
| Item | Parameter (PN) |
|---|---|
| Nominal Pressure | 1.6, 2.5, 4.0, 6.4 MPa |
| Strength Testing Pressure | 2.4, 3.8, 6.0, 9.6 MPa |
| Seal Testing Pressure (Low) | 0.6 MPa |
| Seal Testing Pressure (High) | 1.8, 2.8, 4.4, 7.1 MPa |
| Applicable Medium | Water, Oil, Gas, Nitric Acid, Acetic Acid |
| Applicable Temperature | -40°C ~ 180°C |
Materials of Main Parts
| Part Name | Material (Carbon Steel) | Material (Stainless 304) | Material (Stainless 316) |
|---|---|---|---|
| Body | WCB | ZG1Cr18Ni9Ti (CF8) | ZG1Cr18Ni12Mo2Ti (CF8M) |
| Bonnet | WCB | ZG1Cr18Ni9Ti (CF8) | ZG1Cr18Ni12Mo2Ti (CF8M) |
| Disc | WCB | ZG1Cr18Ni9Ti (CF8) | ZG1Cr18Ni12Mo2Ti (CF8M) |
| Seal Ring | PTFE, 304, 316 | PTFE, 304, 316 | PTFE, 304, 316 |
| Gasket | PTFE | PTFE | PTFE |
No drawing available.
