OUWEI Axial Flow Check Valve Nominal size: NPS1-48 (DN25-1200) Pressure rating: Class150-1500 (PN16-250) Working temperature: -46 ℃~550 ℃ Main materials: carbon steel, stainless steel, alloy steel, etc

End connections: RF, RJ, etc

1、 Specifications and brief description

Specification: NPS1-48 (DN25-1200), Class150-2500 (PN16-420)

Overview: cast steel axial flow check valve

2、 Detailed information

Product Overview

The axial flow check valve determines the opening and closing of the valve disc by the pressure difference between the inlet and outlet ends of the valve, which can effectively prevent medium backflow and ensure pipeline safety. The valve chamber flow passage adopts a streamlined design, which has characteristics such as small flow resistance, fast opening and closing response speed, and low noise. It is widely used in fields such as oil, natural gas, and fire protection, especially suitable for pump outlets in oil pipelines and compressor outlets in gas pipelines, effectively preventing media backflow.

The design and inspection can comply with standards such as API 6D, GB/T 21387, API 598, GB/T 26480, etc. The fire safety design meets the requirements of API 6FA, and the NACE anti-corrosion and acid resistance are optional.

main features 

① Single structure, light weight, good rigidity, and easy maintenance

② Streamlined design of flow channel, low flow resistance, and low noise

③ The spring thrust enables the valve disc to handle closure even without medium pressure

④ A good support method ensures that the valve disc and seat can be well aligned regardless of the installation position, and can be installed at any angle

⑤ High performance springs enable valves to easily achieve low-pressure sealing and opening

⑥ Soft and hard composite seals and metal seals are optional