Series 6600 ARV for Pump-Protection (On-Off & Semi-Modulating)
The Blackhall Series 6600 is a high-performance Automatic Recirculation Valve (ARV) engineered to protect centrifugal pumps operating under variable load conditions. Designed for both on-off and semi-modulating operation, this valve ensures continuous minimum flow during low or zero demand, safeguarding the pump from thermal damage, cavitation, and reverse flow. Its integrated non-return and bypass control features eliminate the need for separate control components, simplifying system design and reducing failure risk. Built with robust materials including carbon steel, stainless steel, duplex, and exotic alloys, the Series 6600 is ideally suited for demanding applications in power generation, petrochemicals, and refinery systems, handling pressures up to Class 2500 / PN420. The result is a compact, intelligent valve solution that delivers exceptional reliability, efficiency, and longevity in high-pressure fluid handling environments.
- Series: 6600
- Material: Carbon Steel, Stainless Steel, Duplex, Super Duplex, Nickel, Exotic Alloys, Titanium
- End Connections: Flanged, Butt Weld
- Pressure Rating: Class150 to 2500; PN16 to PN420
- Size Range: 1½” – 18″ (DN40 – DN450)
