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Products

Automatic Recirculation Valves for Pump Protection

Series 6500
(Low Pressure Modulating)

Size:
1.5" - 26"
DN40 - DN650

Material:
Carbon Steel,
Stainless Steel,
Duplex,
Super Duplex,
Nickel,
Exotic Alloys &
Titanium

Pressure Rating:
Class150 to 600;
PN16 to PN40

End Connections
Flanged & Butt Weld

Series 6500 Automatic Recirculation Valve

Series 6600
(On-Off & Semi-Modulating)

Size:
1.5" - 18";
DN40 - DN450

Material:
Carbon Steel,
Stainless Steel,
Duplex,
Super Duplex,
Nickel,
Exotic Alloys &
Titanium

Pressure Rating:
Class150 to 2500;
PN16 to PN420

End Connections
Flanged & Butt Weld

Series 6600 Automatic Recirculation Valve

Series 6700
(High Pressure Modulating)

Size:
1.5" - 14"
DN40 - DN350

Material:
Carbon Steel,
Stainless Steel,
Duplex,
Super Duplex,
Nickel,
Exotic Alloys &
Titanium

Pressure Rating:
Class150 to 2500;
PN16 to PN420

End Connections
Flanged, Butt Weld
& Special

Series 6700 Automatic Recirculation Valve

Fluent Innovation for Ultimate Performance

Blackhall have been manufacturing ultra-reliable Automatic Recirculation Valves for over 50 years. Each valve is engineered to the client pump characteristics and our CFDA technique verified by empirical flow testing since 1989 has perfected our bespoke fluent solution. The Blackhall Automatic Recirculation Valve is 100% tailored and guaranteed to deliver the ultimate performance & endurance every time.

The range includes both on/off and modulating options and is available in either Straightway or Angle Pattern design which provides the additional benefit of in-situ maintenance.

Automatic Recirculation or Minimum Flow By-Pass Valves automatically protect centrifugal pumps during low load and modulating operations. The pump load drops below a determined minimum pre-set flow rate, the valve stem moves toward its seat & the bypass opens, thus maintaining the minimum flow rate at all times & offering our clients unstoppable performance and reliability in some of the harshest environments.

Our valvologists continue to embrace leading technologies and as a result the Blackhall team use the latest in materials, CFDA, FEA and seismic analysis ensuring that our customers receive longer life valves, outperforming any alternative in the market.

Contact us

Have an Enquiry? Get in touch.

enquiry@blackhall.co.uk

+44 (0) 1484 407080

Blackhall, Taylor and Shaw
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