What is a check valve?
The function of a check valve is to prevent the backflow of medium in the pipeline. Check valves belong to the category of automatic valves, and the opening and closing parts open or close themselves by the force of the flowing medium. Check valves are only used on pipelines with unidirectional flow of media to prevent media backflow and prevent accidents.
Product Description:
main features 

• 1. Middle flange structure (BB): The valve body and valve cover are connected by bolts, which is convenient for valve maintenance.
• 2. Middle welding: The valve body and cover adopt a welding structure, suitable for high-pressure working conditions.
• 3. Self sealing structure, suitable for high-pressure working conditions, with good sealing performance.
• 4. The channel of forged steel check valve body adopts full diameter or reduced diameter, and the default is reduced diameter.
• 5. Lift check valves, ball check valves, swing check valves, etc.
• 6. Special working conditions can be equipped with built-in springs as required.

Product specifications

1. Design Specification: API 602
2. Structure length: ANSI B16.10
3. Connection standard: ANSI B1.20.1
4. Pressure test: API 598
5. Product Scope
6. Main material: forged steel
7. Nominal diameter: 3/8 "-4"
8. Pressure range: 150LB-2500LB
9. Applicable temperature: ≤ 425 ℃
10. Applicable media: water, oil, natural gas, etc