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 | |
|---|---|---|---|---|---|---|---|---|---|
| 104A-1-10 | 04 | 1/8" MPT | 1/8" FPT | 3000 PSI | 10 PSI | 0.88 | Aluminum | Buna-N | |
| 104A-3-10 | 04 | 1/8" MPT | 1/8" FPT | 3000 PSI | 10 PSI | 0.88 | Aluminum | Teflon® | |
| 104A-9-10 | 04 | 1/8" MPT | 1/8" FPT | 3000 PSI | 10 PSI | 0.88 | Aluminum | Neoprene | |
| 104A-18-10 | 04 | 1/8" MPT | 1/8" FPT | 3000 PSI | 10 PSI | 0.88 | Aluminum | Viton® | |
| 104A-25-10 | 04 | 1/8" MPT | 1/8" FPT | 3000 PSI | 10 PSI | 0.88 | Aluminum | Ethylene-Propylene | |
| 104B-1-10 | 04 | 1/8" MPT | 1/8" FPT | 3000 PSI | 10 PSI | 0.88 | Brass | Buna-N | |
| 104B-3-10 | 04 | 1/8" MPT | 1/8" FPT | 3000 PSI | 10 PSI | 0.88 | Brass | Teflon® | |
| 104B-9-10 | 04 | 1/8" MPT | 1/8" FPT | 3000 PSI | 10 PSI | 0.88 | Brass | Neoprene | |
| 104B-18-10 | 04 | 1/8" MPT | 1/8" FPT | 3000 PSI | 10 PSI | 0.88 | Brass | Viton® |
