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Starvalve (RS type) Changeover Valve 3D

Sarasin-RSBD®

Starvalve (RS type) Changeover Valve

The Sarasin-RSBD® Starvalve series of changeover valves provides a safe and efficient method of switching from an active to a standby pressure relief valve.

Due to the changeover valve design, no seat lapping is required for maintenance, meaning there are minimal spare parts and a reduced cost of ownership. It reduces the risk of a pressure relief valve chattering from excessive pressure drop through traditional shuttle type changeover valves. The Sarasin-RSBD® Starvalve is a rotor type changeover valve which maintains a pressure drop of pressure below 3% through its body. This changeover valve is designed for use in refineries within the petrochemical and cryogenic industries.

KEY FEATURES & BENEFITS

  • Rotor type maintaining a pressure drop of pressure below 3% through its body

  • Clear, positive indication of the active pressure relief valve

  • Tested packing design plus minimal leak points ensure reduced fugitive emissions

  • No seat lapping is required for maintenance

  • Minimal spare parts reduce the cost of ownership

  • Simple operation, built-in seat equalization, and no special tool requirements minimize the total valve operating time

  • Tandem design (single way) for dual pressure relief valves which are discharging into a closed header system

APPLICATIONS

  • Refineries Petrochemical and Chemical installations

DESIGN STANDARDS

  • ASME B16.34, PED 2014/68/UE

DESIGN RATINGS

  • ASME Class 150 to 600

SIZE RANGE & DIMENSIONS

  • Single way: 50mm (2 inches), 2 x 50mm (2 inches) to 250mm (10 inches), 2 x 250mm (10 inches)

  • Double way: 50mm (2 inches) - 2 x 25mm (1 inch) to 250mm (10 inches) - 2 x 200mm (8 inches)

TEMPERATURE RANGE

  • -60ºC - 427ºC (-76°F - 800°F)

CAPACITY

  • Individually calculated and selected for each process application

MATERIALS

  • Carbon steel, various carbon & chrome moly steels austenitic stainless steels

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