Full-lift spring-loaded bronze safety-relief valve for compressed air, low-pressure steam, hot-water heating.
Full-lift spring-loaded bronze safety-relief valve for compressed air, low-pressure steam, hot-water heating.
| Body | bronze CC491K (gun-metal) |
| Disc / spring guide | 316 stainless |
| Spring | spring steel, cadmium-plated |
| Seat | PTFE or 316L metal-to-metal (set-dependent) |
| Nominal size | DN25 (1") |
| Connection | BSP F threaded inlet × free outlet |
| Set pressure | 6 bar (factory-set, sealed) |
| Temperature | -10 to +185 °C |
| Discharge coefficient Kd | 0.65 (gas) / 0.45 (liquid) |
| Function certificate per EN ISO 4126-1 | |
| Sealing | TÜV / VdTÜV component-tested family |
| Material | Bronze CC491K / 316 SS internals |
| MOQ | 1 ea |
Form-fit envelope of Goetze 851-bGFL, Niezgodka Fig. 10/12, Herose 06381, Bopp & Reuther SiSto and LESER Type 437 DN25 bronze relief valves.