Dwyer Instruments DA-33-2-9 Pressure Switch 321894-709 Always verify sizing against the

Always verify sizing against the outdoor unit manufacturer’s charging chart

This unit is rated for total pressures up to 100 psi (7 bar) and is the industry standard for portable

the 100233609 gasket ensures a watertight seal and airtight closure during the modulation cycles of high-recovery systems

Corrosion Resistance: Stainless steel ball and stem prevent pitting and scaling in harsh fluid conditions

Mixing voltage ratings will cause immediate electrical failure and creates a significant safety hazard for the unit controls

Dwyer Instruments DA-33-2-9 Pressure Switch 321894-709 Always verify sizing against theThe 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