www.pmmag.com/articles/93322-at-ahr-flow-valve
At AHR: Flow Valve
March 1, 2010

Bell & Gossett’s The Low Flow Circuit Sentry valve features a unique field-adjusted cartridge that allows the selection of exact flows for specific applications and is designed for automatic flow-limiting style balancing of both HVAC cooling and heating circuits.
Bell & Gossett. www.bellgossett.com. Circle 3