Key Benefits Full Compatibility: Dropped-in fit for Watts FluidAir R364

It features a 1/4" barbed connection for standard pneumatic tubing and two-terminal electrical contacts for direct furnace control board integration

The 100-foot length provides ample reach for routing through conduit and plenums in large-scale mechanical rooms

Professional Reach: The 18-inch copper lead provides sufficient flexibility for routing away from the main burner path to prevent premature wear

McDonnell & Miller P-4-SS Probe Rod Els PW 17895 Key Benefits Full Compatibility: Dropped-inThe McDonnell & Miller P 4 SS Probe Rod (Part Number 179545) is a heavy duty, 48 inch 316 stainless steel probe rod engineered for precision liquid level sensing in demanding boiler environments. Designed as a critical boiler safety device, this probe features a specialized PTFE coating (Teflon) to prevent bridging and ensure accurate conductance signals, especially in systems prone to sediment or scale buildup. It serves as a direct replacement