SANHUA Automotive offers a wide array of products, with an emphasis on thermal management systems and new-energy vehicle HVAC systems. Our complete line of high-quality thermal management products gives us the opportunity to design solutions to our customers’ specific needs while maintaining a competitive price.

Check Valve

  • Well balanced internal leakage and pressure drop
  • High/low temperature resistance
  • Cost effective design
  • Easier integration with plug-in valve core


SANHUA Automotive check valves offer excellent control of OEM refrigerant flow with optimized flow and pressure drop performance. SANHUA Automotive’s designs are customized to unique OEM packaging & performance requirements, including long service life usage in R134a/R1234yf and R744 refrigerant systems.


Diameter 10/16mm 6/9mm
Medium R134a/R1234yf; R744
Environmental temperature -40 - 120℃
Min. open pressure5 kPa 10 kPa
Max. operating pressure 3.1 MPa 13.3 MPa
Internal leakage ≤10 mL/min (@ 1.0 MPa ∆P air) ≤100 mL/min (@ 1.0 MPa ∆P air)