The Roma Fig. 573 is a direct-operated, single-seat surplus pressure relief valve featuring spring-loaded regulation for dependable pressure management. It is specifically designed to automatically discharge excess pressure, helping maintain safe operating conditions within the system.
As system pressure increases, it acts directly on the valve plug, causing the valve to open in line with the preset spring adjustment. This enables accurate and consistent pressure control while preventing pressure buildup.
The balanced outlet design of the Fig. 573 reduces the effect of downstream pressure variations, ensuring stable performance and improved regulation accuracy.
Key Benefits
Typical Applications
Suitable for use with water, compressed air, gases, oils, and a wide range of chemical process fluids.
| Valve Size | 65 | 80 | 100 | 150 | 200 |
|---|---|---|---|---|---|
| A | 244 | 292 | 300 | 444 | 610 |
| B | 100 | 127 | 110 | 150 | 207 |
| C | 320 | 377 | 385 | 665 | 855 |
| Mass/kg | 27 | 34 | 40 | 128 | 290 |
Connections: Flanged
Adjustable pressure ranges for 65, 80 & 100mm
Adjustable pressure ranges for 150mm
Adjustable pressure ranges for 200mm
| Body: | SG Iron, Cast Steel, Stainless Steel |
|---|---|
| Spring Cage: | 316 SS |
| Trim | 316 SS |
| Seals | Nitrile, Viton, EPDM |
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