The FS4-3J flow switch is designed to withstand liquid temperatures up to 300°F (149°C)

Built to withstand high-shock environments

making it an industry standard for commercial HVACR valve replacement

this HVAC zone control solution offers a simplified two-wire installation

The inclusion of a 1/4-inch flare nut with a Schrader depressor on the condenser side connection allows for simplified pressure sensing and system diagnostics

Maxon 27732 Flame Rod Assembly 320788-703 The FS4-3J flow switch isThe Maxon 27732 Flame Rod Assembly is a fundamental component for industrial combustion safety, specifically engineered for high performance flame rectification. At a standard length of 20 inches with a 1 2" NPT connection, this assembly is built for OvenPak burner models 445, 456M, 470M, and 487M. As a veteran technician knows, field conditions often require precise adjustments; the Maxon 27732 is designed to be trimmed to length, allowing you to