A217 High-Pressure Swing Check Valve (also known as Non-Return Valve) is a type of automatic valve commonly installed in unidirectional pipelines to prevent medium backflow. Its opening or closing action depends on the pressure of the pipeline medium.
As one of the most widely used check valves in fluid pipelines, the swing check valve is typically suitable for clean fluid media but not recommended for viscous fluids or those containing solid particles, as this may cause insensitive operation and inadequate sealing, leading to unreliable backflow prevention.
The swing check valve allows medium flow in only one direction, effectively preventing backflow and avoiding potential accidents.
Specification
Size Range :NPS 2 to NPS 24
Pressure Range: Class 900to Class 2500
End Connecting :BW, RTJ
Materials: WCB, A217 WC6, A217 WC9, CF8C
Technical Specifications
Design & manufacture according to ANSI B16.34
Face-to-face according to ASME B16.10
End Connection according to ASME B16.5 (RTJ), ASME B16.25 (BW)
Test & inspection according to API 598.
Features of Swing Check Valves
Rotary Opening/Closing Mechanism
The valve operates via a rotary mechanism for opening and closing.
No external actuator is required, making it simple to operate, energy-efficient, and longer-lasting.
High-Precision sealing
The spherical linkage disc ensures excellent sealing performance.
Sealing integrity remains stable over time, ensuring system reliability.
Corrosion Resistance
Constructed from corrosion-resistant materials (e.g., stainless steel, plastics).
Suitable for various chemical media, offering superior corrosion resistance.
High adaptability
Large nominal diameter and pressure rating up to 16 MPa or higher.
Ideal for preventing backflow in various liquid pipeline systems.
GNEE High Pressure Swing Check Valve for sale
