Robertshaw 1980-030 Thermocouple If the circuit is open

If the circuit is open while the furnace is cool

This standard opening gas valve features a 3/4" x 3/4" NPT inlet and outlet

There is no technical difference

reducing internal friction and increasing reliability versus reciprocating alternatives

including water

Robertshaw 1980-030 Thermocouple If the circuit is openThe Robertshaw 1980 030 is a high performance 30 inch snap fit thermocouple engineered for rapid response and reliable flame sensing in standing pilot systems. Designed specifically for professional HVAC technicians and contractors, this universal gas thermocouple features a robust stainless steel outer jacket that prevents heat blistering and oxidation in high temperature environments. Unlike standard aftermarket components, the 1980 series utilizes