Resideo MARD-8 Damper 340155-7024 This HVAC expansion valve is

This HVAC expansion valve is a critical component for maintaining target subcooling and optimizing refrigerant flow across varying thermal loads in 39T series and other compatible Carrier/Bryant/Payne evaporators

ensuring handle-switching cycles without premature pitting or contact welding

variable pitch sheave designed for precise HVAC blower speed adjustment and fan drive optimization

you need a high-integrity hot surface igniter that can handle the rapid thermal cycling of high-efficiency pool and spa heaters

Resideo MARD-8 Damper 340155-7024 This HVAC expansion valve isThe Resideo MARD 8 is a heavy duty 8 inch modulating automatic round damper designed for high performance bypass and zone control in commercial and residential HVAC systems. Built with a 22 gauge galvanized steel shell, this single blade damper features a male crimped and female uncrimped end for seamless integration with rigid or flexible ductwork. A primary application for this 3 wire motorized damper is managing bypass air in systems larger than