Rathe Knowledge Base Caleffi Zone Valves Not All-Zone Valves Are The Same! Watch The Video Valve Construction Aluminum Frame - Does Not Rust. The case is a Plastic Poly Carbon - Which also creates a thermal break. Helps keep heat away from the motor ...
The new Armstrong Gen-5 pumps with integrated VFD has a programmable feature that can control a bypass control valve for minimum flow. What makes it even cooler is that this control is a modulating output - varying the amount bypassed based upon how ...