The Carrier HK05SZ003 Pressure Transducer is a critical diagnostic and control component designed for precise suction side monitoring in high-performance HVAC systems

Whether you are addressing a fan control relay failure or intermittent communication issues within the air handler

it provides the precise modulation required for hot water

allowing for flexible mounting and connection to the system's liquid or suction lines

and PCH/PCL liquid level control and low water cut-off units

Lochinvar & A.O. Smith 100233609 Gasket 318518-761 The Carrier HK05SZ003 Pressure TransducerThe Lochinvar & A. O. Smith 100233609 Gasket Flapper Valve is a critical OEM replacement component engineered for high efficiency condensing boilers and commercial water heaters, including the Lochinvar Armor X2 and Shield SN126 401 series. As a veteran grade HVAC flapper valve, this part serves as a directional check mechanism within the combustion or venting assembly, preventing hazardous exhaust gas backflow and maintaining proper pressurized seal