Inline Check/Relief Valves
These spring-operated poppet valves, with optional relief settings, allow free flow in only one direction and prevent backflow – sometimes referred to as “backflow preventor”, “flow stop”, or “non-return” valve. They also are used for relief and by-pass functions; however, they should not be used as safety relief valves.
| Part Number | Valve Size | Inlet Port | Outlet Port | Max Working Pressure | Crack Pressure | Max Flow Coefficient | Body Material | Seal Material | |
|---|---|---|---|---|---|---|---|---|---|
| 104B-3-10 | 04 | 1/8" MPT | 1/8" FPT | 3000 PSI | 10 PSI | 0.88 | Brass | Teflon® | |
| 104B-3-25 | 04 | 1/8" MPT | 1/8" FPT | 3000 PSI | 25 PSI | 0.88 | Brass | Teflon® | |
| 104B-3-50 | 04 | 1/8" MPT | 1/8" FPT | 3000 PSI | 50 PSI | 0.88 | Brass | Teflon® | |
| 104B-3-65 | 04 | 1/8" MPT | 1/8" FPT | 3000 PSI | 65 PSI | 0.88 | Brass | Teflon® | |
| 104B-9 | 04 | 1/8" MPT | 1/8" FPT | 3000 PSI | 1-2 PSI | 0.88 | Brass | Neoprene | |
| 104B-9-5 | 04 | 1/8" MPT | 1/8" FPT | 3000 PSI | 5 PSI | 0.88 | Brass | Neoprene | |
| 104B-9-10 | 04 | 1/8" MPT | 1/8" FPT | 3000 PSI | 10 PSI | 0.88 | Brass | Neoprene | |
| 104B-9-25 | 04 | 1/8" MPT | 1/8" FPT | 3000 PSI | 25 PSI | 0.88 | Brass | Neoprene | |
| 104B-9-50 | 04 | 1/8" MPT | 1/8" FPT | 3000 PSI | 50 PSI | 0.88 | Brass | Neoprene |
