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  • Valves
    • Automatic Recirculation Valve
      • Recirculation Valve drawing
    • Blow-Down Valve
      • Continuous Blow-Down (CBD) Valve
      • Intermittent Blow-Down (IBD) Valve
      • Quick-Action Discontinuous Blow-Down Valve
      • Tandem Blow-Down Valve
    • Changeover Valve
      • Changeover Valve – Models
    • Control Valves
      • Flashing Solutions – Angle Control Valves
      • Anti-Cavitation Control Valve Solutions
      • Model 74BS “X-Flash” Angle Control Valve
      • Model 74CS “ToughFlash” Angle Control Valve
      • Model 74KS – “Cage release” Angle Control Valve
      • Model 74M “MultiStage” Angle Control Valve
      • Model 72 – In-line Control Valve
      • Model 71ES – HP Choke Valve
      • Model 71KS – High pressure shut off
      • Model 76PC – Wafer Control Valve
    • 3, 4, 5, and Multi-Way Diverter Valves
      • Diverter Valve – Models
    • Disc Bottom Outlet Valves
      • Disc Bottom Outlet Valve – Models
    • Piston Bottom Outlet Valves
      • Piston Bottom Outlet Valve – Models
    • Goggle Valve
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    • Globe Valves
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    • Lift Plug Valve
      • Model 12 – IsoPlug Valve
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    • Line Blind Valves
      • Cam-Set® Line Blind Valve – Drawing
      • Cam-Set® Line Blind Valve with Counterweight
      • Cam-Slide® Line Blind Valve
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    • ManiFlow Selector Valve
    • Spray Rinse Valves
      • Spray Rinse Valve – Models
    • Sampling Valves
      • Sampling Valve – Models
    • In-Tank Shut-Off Valves (TESO)
      • In-Tank Shut Off Valve – Models
  • Applications
    • Coal Gasification
    • Direct Coal Liquefaction
    • Delayed Coking
    • Heavy Oil Upgrading
    • Hydrocracking
    • Pharmaceutical Applications
    • Mineral Ore Applications
      • HPAL Process
    • Polymer Production
    • PTA Production
    • Offshore Applications
    • Vacuum Distillation
      • Vacuum Distillation Process Steps
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  • Valves
    • Automatic Recirculation Valve
      • Recirculation Valve drawing
    • Blow-Down Valve
      • Continuous Blow-Down (CBD) Valve
      • Intermittent Blow-Down (IBD) Valve
      • Quick-Action Discontinuous Blow-Down Valve
      • Tandem Blow-Down Valve
    • Changeover Valve
      • Changeover Valve – Models
    • Control Valves
      • Flashing Solutions – Angle Control Valves
      • Anti-Cavitation Control Valve Solutions
      • Model 74BS “X-Flash” Angle Control Valve
      • Model 74CS “ToughFlash” Angle Control Valve
      • Model 74KS – “Cage release” Angle Control Valve
      • Model 74M “MultiStage” Angle Control Valve
      • Model 72 – In-line Control Valve
      • Model 71ES – HP Choke Valve
      • Model 71KS – High pressure shut off
      • Model 76PC – Wafer Control Valve
    • 3, 4, 5, and Multi-Way Diverter Valves
      • Diverter Valve – Models
    • Disc Bottom Outlet Valves
      • Disc Bottom Outlet Valve – Models
    • Piston Bottom Outlet Valves
      • Piston Bottom Outlet Valve – Models
    • Goggle Valve
      • Goggle Valve – Models
    • Globe Valves
      • Globe Valve – Models
    • Lift Plug Valve
      • Model 12 – IsoPlug Valve
      • Model 12 – SwitchPlug Valve
    • Line Blind Valves
      • Cam-Set® Line Blind Valve – Drawing
      • Cam-Set® Line Blind Valve with Counterweight
      • Cam-Slide® Line Blind Valve
      • Stacey Line Blind Valve
    • ManiFlow Selector Valve
    • Spray Rinse Valves
      • Spray Rinse Valve – Models
    • Sampling Valves
      • Sampling Valve – Models
    • In-Tank Shut-Off Valves (TESO)
      • In-Tank Shut Off Valve – Models
  • Applications
    • Coal Gasification
    • Direct Coal Liquefaction
    • Delayed Coking
    • Heavy Oil Upgrading
    • Hydrocracking
    • Pharmaceutical Applications
    • Mineral Ore Applications
      • HPAL Process
    • Polymer Production
    • PTA Production
    • Offshore Applications
    • Vacuum Distillation
      • Vacuum Distillation Process Steps
  • Company
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    • 100 Years SchuF
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Automatic Recirculation Valve

The SchuF automatic recirculation valve is a unique design whose performance has been perfected through simulation and joint research and development with the universities of Magdeburg and Darmstadt.

Automatic Recirculation Valve grey with background

Model 78PS Automatic Recirculation Valve, Photo:©SchuF

Download


  • Automatic Recirculation Valve Brochure.pdf (5MB)
  • Automatic Recirculation Valve (ARV) Inquiry Form

     

Operation of Minimum Flow Valve (ARV)

Minimum Flow or Automatic Recirculation Valves automatically protect centrifugal pumps during low load operation. As the pump’s load drops below a preset flow rate, the valve’s disc moves towards it’s seat  and causes the bypass bush to open a bypass flow path. The pump minimum flow rate is thus reached and maintained.

 

Automatic Recirculation Valve Applications

A common application is to protect pumps which handle hot water for boiler feeding or cooling water plants, where partial evaporation of the water content might otherwise cause the pump to run dry. Even when the flow rate through the main valve to the boiler is completely shut off, a minimum flow is maintained.

Another application is to protect high performance pumps during a start up phase. In this scenario, several pumps are used in parallel with one in stand-by. The pump recirculation valve enables the swap to occur without damage to the pumps. SchuF’s unique design is widely used in the Power, Paper and Pulp, Maritime, Refining and Chemical industries.

 

Advantages of the SchuF Automatic Recirculation Valve

  • Unique design
  • Combines both check and bypass features
  • Proprietary Cv calculation system
  • Minimum flow protection
  • No external actuation required
  • 3 Phase Slurry and High pressure variants available
Pump Recirculation Valve 78PS Automatic Recirculation Valves - Workshop

Pump recirculation valve, Photo:©SchuF

ARV Model Numbers

Model 78 (Base Pump Recirculation Valve) and

Model 74 (Control Let Down Pump Recirculation valve variant)

 

Contact SchuF

For further information, pricing or a brochure, please contact David Donne (Sales Director) Tel. +49 6198 571 110, Email: valves@schuf.com or use the following link:

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Contact us!

Phone: +49 6198 571100
E-mail: valves@schuf.com

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SchuF Armaturen und Apparatebau GmbH • SchuF UK Ltd. • SchuF Speciality Valves India Pvt. Ltd. • SchuF Valve Technology GmbH, Ireland SchuF Italy S.r.l. • Fetterolf • SchuF USA Corp. • SchuF Benelux B.V. • SchuF Valves China (SFCH) Ltd. • SchuF Speciality Valves (Jiangsu) Limited • SchuF Middle East F.Z.C. • SchuF South East Asia Ltd.

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