Technical Information Fig. 573 - 65-200mm

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

  • Provides reliable protection against excessive system pressure
  • Assists in regulating and monitoring pump discharge pressure
  • Maintains stable and efficient system operation

Typical Applications
Suitable for use with water, compressed air, gases, oils, and a wide range of chemical process fluids.

 

Dimensions mm

Valve Size6580100150200
A244292300444610
B100127110150207
C320377385665855
Mass/kg273440128290

Specifications

Connections: Flanged

Adjustable pressure ranges for 65, 80 & 100mm

  • Up to 1700kpa

Adjustable pressure ranges for 150mm

  • Up to 1200kpa

Adjustable pressure ranges for 200mm

  • Up to 800kpa

Materials

Body:SG Iron, Cast Steel, Stainless Steel
Spring Cage:316 SS
Trim316 SS
SealsNitrile, Viton, EPDM

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