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Does this valve support flow in both directions
the standard EX4-I21 is a uni-flow design
This component is field-adjustable
which is calibrated to deliver the necessary static pressure for standard unit heater heat exchangers
Nordyne 669943R Drain Pan 322027-701 Does this valve support flowThe Nordyne 669943R is a critical vertical drain pan designed for high efficiency moisture management in residential and commercial HVAC systems. As the direct OEM replacement for part 669943, this updated component ensures seamless compatibility with Nordyne furnace and air conditioning configurations. In any professional installation, maintaining the integrity of the condensate management system is non negotiable to prevent water damage and ensure
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