Vacuum Operated Heater Control Valve

4seasons everco four seasons heater control valve 74859.

Vacuum operated heater control valve.

These newer valves have one large vacuum dia phragm that actuates a piston within the valve to channel coolant flow into the heater core. This is the most common valve on aftermarket heat and a c evaporator units that use vacuum operated controls. 1961 1966 ford thunderbird cable operated heater hot water control valve part 66 34827 1 1977 1979 ford thunderbird heater temperature control unit part 66 69798 1 19 99 ea. Online shopping for heater control valves heating from a great selection at automotive store.

4 seasons 1 4seasons everco 100 ac delco 5 dorman 6 uro 16 this is a test. The valve is opened with vacuum it is normally closed. If the heater valve malfunctions the heater can still produce hot air to the cabin. A cable operated heater control valve utilizes a bowden cable to drive a flap inside the valve.

Vacuum operated heater control valve to open and close the flow of water in the heater system. Heater valve repair kit compatible with mercedes benz cars set of heater. This way heat may still be provided even when it is defective. Since a vacuum operated valve defaults to the fully open heat on position when vacuum isn t applied a loss of vacuum is the first thing to suspect in a heat always on condition.

Heater valve compatible with toyota 4runner 99 02 tacoma 01 04 heater control valve cable operated 3 8 out of 5 stars 8. Many of the heater valves used from the 1970s to the 90s were made from corrosion resistant metal or abs plastic and were vacuum operated. The cable can be operated by manually moving a lever in the control panel. Heater valve compatible with toyota 4runner 99 02 tacoma 01 04 heater control valve cable operated 8.

As you move the lever on your hvac control the cable moves the flap. You have 0 items in your cart. Vacuum operated heater control valve a heater control valve can fail in several ways. Diysave10 online ship to home orders only.

The valve uses 5 8 heater hoses and 1 8 vacuum tube. A failing heater control valve may not open or only open when the vehicle is at idle. The vacuum valve is normally open and uses a pintle and diaphragm. In a cable operated heater valve a bowden cable is used to move the flap inside the valve.

Four seasons 74627 heater valve 4 7 out of 5 stars 38. The heater control valve is found in front of the firewall of the vehicle. It may be controlled either by vacuum pressure or electrical signal. Four seasons 74866 heater valve 3 9 out of 5 stars 10.

It sits between the water pump heater hose and the heater core. A vacuum valve does this with a pintle and diaphragm except this type is typically open.