This OEM replacement pressure switch ensures exact electrical ratings and set points required by the manufacturer

Engineered with a heavy-duty ASTM grade cast bronze body

Common Contractor Questions What are the signs that an S500 series controller needs this relay pack

Backward Compatibility: Specifically designed to replace obsolete part number 1172828 with updated internals

This genuine Lennox HVAC part is engineered for a precise fit in Lennox LGB and LCB series units

Armstrong Fluid Technology 216944-300 326058-757 This OEM replacement pressure switchThe Armstrong Fluid Technology 216944 300 is a high performance Pressure Water Reducing Valve designed for precision in commercial and residential HVAC hydronic systems. This Armstrong RD 11T S model features a robust brass body construction, ensuring long term durability and resistance to corrosion. Engineered with a 1 2" NPT Union Inlet and a 1 2" Female NPT outlet, it simplifies installation in tight piping configurations. The valve is pre