Sil-Fos 5 features a medium flow range that allows technicians to bridge gaps in loose-fitting joints while maintaining excellent capillary action for tighter tolerances

0" WC range by a qualified technician to meet specific furnace gas valve manifold requirements

System Compatibility: Integration-ready for Series 21 single furnace and Series 31 multi-furnace configurations

Lochinvar Knight boilers

This specific model features a 6 1/2-foot (2m) shielded cable

Lennox 26W45 Pressure Switch 326070-701 Sil-Fos 5 features a mediumThe Lennox 26W45 Pressure Switch is a critical safety component designed for two stage gas furnaces, specifically engineered to monitor combustion air pressure within the inducer assembly. This dual stage pressure switch features precise set points of 0. 90" WC and 1. 50" WC, ensuring the system only proceeds with the ignition sequence when sufficient airflow is present for safe combustion. Built for high reliability in Lennox and Armstrong Air