While not limited in use, the Swagelok® hydrogen FK check valve meets the high demands of hydrogen refueling station applications, providing dependable operation and higher uptime for station operators. The patented seat design and spring are isolated from the flow path to minimize damage and increase service life. Plus, when the differential drops below the cracking pressure, the check valve prevents reverse flow.
Specifications
| Body Materials | 316/316L duel certified material with 12% min Ni |
| End Connections | 9/16 in., 1/2 in., and 3/4 in. Swagelok® FK series medium-pressure tube fitting |
| Working Pressures | Up to 1050 bar (15 229 psig) |
| Temperature Range | –40° to 85°C (–40° to 185°F) |
| Flow Coefficient | up to 4.5 Cv |
| Fixed Cracking Pressure | < 2 bar (29 psig) |
| Body Seal | 1.25 × pressure rating |
| Seat Seal | 1 × pressure rating |
| Performance Testing | Passed third-party hydrogen testing per ISO-19880-3 (Letter of Attestation available) |
Tube Fittings Comparison (FK Series)
Watch and compare installation of FK series and cone and thread fittings.
Compare the Fittings