Which Check Valve is Right for Me?

CVLP - Low Pressure Check Valve

• Low pressure check valve for low pressure (less than 25 PSI)
• Free floating diaphragm will seal with very small pressure differentials
• Very low crack pressure < 0.25 PSI
• Free floating diaphragm will not provide a positive seal every time, expect some water leakage through seal
• Barbed fittings make this an easy check valve to install
• Kynar construction and Viton seal will be ozone resistant up to ~5% ozone, also ozone by-products can deteriorate Viton seal

CVHP - High Pressure Check Valve

• High pressure check valve for high pressures (up to 200 PSI)
• Stainless steel spring and ball provide positive, tight seal
• Crack pressure of ~2 PSI - (crack pressure may vary between valves)
• Crack pressure of ~2 PSI - (crack pressure may vary between valves)
• Male NPT connections require threaded connections to this valve
• Kynar construction and Viton seal will be ozone resistant up to ~5% ozone, also ozone by-products can deteriorate Viton seal

CVSS - Stainless Steel Check Valve

• High pressure check valve for high pressures (up to 200 PSI)
• Stainless steel spring and ball provide positive, tight seal
• Standard valve uses 0.5 PSI crack pressure, other crack pressures are available upon request
• Open design offers very high flow, and very little flow restriction
• Female NPT connections require threaded connections to this valve
• Viton, or PTFE seal designs are available on stainless steel valves
  • PTFE seal will be most ozone resistant and longest lasting seal available.
  • Viton seal will be ozone resistant up to ~5% ozone, also ozone by-products can deteriorate Viton seal.
  • Viton is very pliable and will offer the most reliable seal.
  • PTFE is very rigid, small particulates will keep this material from offering a positive seal.