Dwyer Instruments DA-33-2-9 Pressure Switch R-448A This 14-inch HVAC fan blade

This 14-inch HVAC fan blade features a precision-engineered 19-degree pitch across its three-blade assembly

This is a 24V AC gas valve

if the tank is rated for 125 PSI

preventing common issues like premature thermal tripping or improper CFM delivery that occur with generic alternatives

offering a reliable service life of up to 60

Dwyer Instruments DA-33-2-9 Pressure Switch R-448A This 14-inch HVAC fan bladeThe Dwyer Instruments DA 33 2 9 Pressure Switch is a heavy duty Bourdon tube operated control designed for precision in demanding HVACR and industrial process environments. This Mercoid Series DA model features an adjustable operating range of 10 to 300 psig, providing reliable SPST (Single Pole Single Throw) switching logic for high pressure or low pressure limit control. Engineered for vertical installation via a flange mount, the DA 33 2 9 includes