The Maxitrol R8110-412 is manufactured with high-tensile alloy to maintain its tension and calibration over long service intervals

Common causes include a failing start capacitor

The compact design with a 4-inch swing radius and 0° to 90° mounting capability ensures it fits into the tightest furnace vestibules

the red color denotes a specific spring tension designed to regulate gravity-fed or forced-draft gas systems within the 10" to 22" W

Robertshaw 1970-018 Thermocouple The Maxitrol R8110-412 is manufacturedThe Robertshaw 1970 018 Thermocouple is a high performance 18 inch Uni Couple engineered for universal pilot burner compatibility in commercial and residential standing pilot systems. Designed for professional HVACR gas appliance repair, this unit generates a consistent 20 to 30 millivolt (mV) output, ensuring rapid and safe pilot flame detection. The core construction features a stainless steel outer jacket that provides superior resistance to high