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SchuF Changeover Valves have been in reliable service in several industries over the past 40 years.

Their main use is with dual-safety relief valves. Changeover valves are switchover valves, switching flow from one pipeline to another. 

They are sometimes referred to as “selector” valves. Changeover valves are well suited to applications where mandatory pressure relief devices (rupture discs and relief valves) are installed as dual devices. 

The design of the changeover valve ensures that at least one of the two pressure relief devices is always in service and full relief flow is guaranteed during changeover. They are also widely used in Plastic and Polymer, Offshore, and Refining industries to handle process media.
Features
  • Sizes: 1” to 10”, larger on demand
  • Pressure rating: up to ASME #2500
  • Leakage rate to process: Class V or VI
  • Temperature rating: from -60° to 500° C
  • Pressure drop: <3%, <1
  • Improved body design for lower weight and Zeta value
  • Material: Carbon steel and Stainless Steel as standard
  • Disc and seat metal sealing as standard
  • Manual actuation as standard
  • Advantages
    • Switch over quickly and efficiently from one relief valve system to another
    • Shorter transfer time in hostile plant environments provides greater worker safety
    • No production system shutdown

1 - 6 of 6 Part Numbers
MODEL 60WT
MODEL 60WT
  • Model - Base Changeover Valve
MODEL 61
MODEL 61
  • Model - High Vacuum Variant
MODEL 62WC
MODEL 62WC
  • Model - Right Angle Variant
  • Base Changeover Valve - Changeover Valve with A Contoured Disc
MODEL 62WC1
MODEL 62WC1
  • Model - Right Angle Variant
  • Base Changeover Valve - Blending Valve
MODEL 63
MODEL 63
  • Model - Ditch Valve
MODEL 69
MODEL 69
  • Model - Tandem Valve Range
1 - 6 of 6 Part Numbers

Specifications

Brand

Size

  • 1” to 10”, Larger on Demand

Pressure Rating

  • Up to ASME Class 2500

Enclosure/Body Material

  • Body: WCB, LCB, LCC, CF3/CF8M

Material of Construction

  • Disc & Spindle: 316 Stainless Steel, Monel 400
  • York: WCB/CF3/CF8, CF3/CF8
  • Handwheel: C.I
  • Packing: PTFE/Graphite
  • Gasket: PTFE/316L, PTFE/Monel

Temperature

  • -60° to 500° C

Pressure Drop

  • < 3 %, < 1

  • Refining, Polymer, Chemical, Petrochemical and Offshore industries
  • Part of Plant Safety Dual Pressure Relief Systems
  • Located e.g. on Storage Tanks, in Pumping or Fluid Transfer Systems, between multiple Heat Exchangers or Dual Filtration Systems

Documentation

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