Heater Shut-Off and Control Valves
Manual pull-cable and inline heater valves in the common bus sizes (5/8", 3/4", 1"), pull-to-open and pull-to-close, 2-port and 4-port.
Frequently asked questions
Pull-to-open or pull-to-close — which do I have?
Follow the cable to the valve and note the lever's rest position with the cable slack. If heat is ON with the knob in, you have pull-to-close. Mixing them up gives you a bus with heat locked on in June.
