Heat-Timer Varivalve Valves
Heat Timer Varivalve Boxes
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The function of the Heat-Timer Varivalve Radiator Air Vent is to provide a means for air to be driven out of the radiator as steam enters. At a
given pressure the fill time of a radiator varies proportional to its heat capacity and inversely proportional to the venting
capacity of the radiator air vent. It is possible to control the speed at which a radiator will fill with steam by installing
a Heat-Timer Varivalve Radiator Air Vent with a certain venting capacity. Used in this manner, radiator air vents are helpful in evening out the
heat distribution in a building.
Varivalve Exclusive Fingertip Adjustment
•Simply slide a lever allows you to adjust venting rate.
•Each Radiator has its own venting speed.
•Long Term Fuel Savings.
Large Variable Orifice
•Allows adjustment of up to 5/16". Makes steam radiators heat up fast (when required.
•Simplifies balancing of systems by providing the fastest heat for hard-to-heat
rooms and allowing reduction of heat to overheated areas.
•Heat Timer Varivalve is for low-pressure one pipe steam heating systems.
Phosphor Bronze Bellows
•Insures positive shutoff! Quiet Operation! No Clicking or hissing.
•Outlasts bi-metal air vents.
High Temperature "O" Ring Seal
•For Positive sealing.
Seat and Poppet at inlet to valve
•Steam or condensation does not enter valve body.
Heavy Duty Construction & Contemporary Styling
•Solid brass case with heavy chrome plating. Available in
straight or angle body.
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