Does the 1-2 PSI spring require a specific mounting position

Can I substitute this with a switch that has a higher temperature rating

providing ample length for routing through the cabinet to the ignition control module

While some "will-fit" imitators exist

Field Controls 46207201 Control Does the 1-2 PSI springThe Field Controls 46207201 (Model 5"RC) is a heavy duty barometric draft control engineered for residential and light commercial oil or coal heating systems. As a precision balanced draft regulator, it maintains consistent static pressure within the venting system by automatically adjusting for changes in stack temperature and atmospheric conditions. This unit is designed for a 5 inch diameter flue and features a high sensitivity gate calibrated for