Can I use this linkage with non-Bray actuators

this fan and motor vent assembly ensures the proper evacuation of flue gases

it provides a reliable normally-open circuit that closes upon sensing the correct vacuum via the 1/4" barb connection

Is the 663864R compatible with R-410A systems

Nordyne 621869R Relay Els PW 17895 Can I use this linkageThe Nordyne 621869R Relay is a reliable 24v SPDT fan relay designed for precise blower control in residential and commercial furnaces and air handlers. This OEM part is a direct replacement for Nordyne 621869, utilizing a 24 VAC coil to switch high voltage loads up to 277 VAC. Its single pole, double throw (SPDT) configuration provides one common terminal and two output terminals, allowing for flexible switching between different blower speeds or