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.
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- Valve Size 20 Remove This Item
- Crack Pressure 25 PSI Remove This Item
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| Part Number | Valve Size | Inlet Port | Outlet Port | Max Working Pressure | Crack Pressure | Max Flow Coefficient | Body Material | Seal Material | |
|---|---|---|---|---|---|---|---|---|---|
| 120A-1-25 | 20 | 1-1/4" MPT | 1-1/4" FPT | 3000 PSI | 25 PSI | 21.1 | Aluminum | Buna-N | |
| 120A-3-25 | 20 | 1-1/4" MPT | 1-1/4" FPT | 3000 PSI | 25 PSI | 21.1 | Aluminum | Teflon® | |
| 120A-9-25 | 20 | 1-1/4" MPT | 1-1/4" FPT | 3000 PSI | 25 PSI | 21.1 | Aluminum | Neoprene | |
| 120A-18-25 | 20 | 1-1/4" MPT | 1-1/4" FPT | 3000 PSI | 25 PSI | 21.1 | Aluminum | Viton® | |
| 120A-25-25 | 20 | 1-1/4" MPT | 1-1/4" FPT | 3000 PSI | 25 PSI | 21.1 | Aluminum | Ethylene-Propylene | |
| 120B-1-25 | 20 | 1-1/4" MPT | 1-1/4" FPT | 3000 PSI | 25 PSI | 21.1 | Brass | Buna-N | |
| 120B-3-25 | 20 | 1-1/4" MPT | 1-1/4" FPT | 3000 PSI | 25 PSI | 21.1 | Brass | Teflon® | |
| 120B-9-25 | 20 | 1-1/4" MPT | 1-1/4" FPT | 3000 PSI | 25 PSI | 21.1 | Brass | Neoprene | |
| 120B-18-25 | 20 | 1-1/4" MPT | 1-1/4" FPT | 3000 PSI | 25 PSI | 21.1 | Brass | Viton® |
