The 694, 693, 685, and 687 Series check valves can be used for a wide range of air and fluid applications.
- EPDM, Buna, Aflas®, or FKM seals
- Hastelloy or 302 stainless steel spring
- High flow rate
- Seat area open diameter: .438"
- Positive seal at very low back pressure or slight vacuum
- Maximum pressure: 125 psi
- Maximum temperature: 140°F