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a metal-seated or RPTFE ball-cone valve from the 61-100 series is typically recommended
The Functional Devices RIB2421SB is a heavy-duty
Designed with 7/8" ODF solder connections
accepting a 0-5 VDC input to modulate a linear 0-15 psi output
Carrier 338635-751 Vent Connection Kit 321894-709 a metal-seated or RPTFE ball-coneMaintain the integrity of your flue exhaust and combustion air systems with the Carrier 338635 751 Vent Connection Kit. This genuine OEM assembly is engineered specifically for Carrier gas furnace models and high efficiency heat pump systems requiring secure direct vent integration. Designed to facilitate a precise link between the furnace collector box and the external venting materials, this kit includes a 3 section flexible vent connector hose,
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