This is new old stock, but it came with the wrong instruction sheet for this model, has instructions for a #9012 switch. This is is DPST pressure switch with a 120-150 range, adjustable, with a 1/4"NPT fitting. Note - it is missing the cover hold down nut.
The Series A3000 Photohelic Switch/Gage is a versatile 2-in-1 instrument combining a time -proven Magnahelic differential pressure gage with low/high pressure switches. It is designed to measure and control positive, negative or differential pressure of air or other non-combustible, non-corrosive gases. Gage reading is unaffected by switch operation.
In good working order Over $150 new This is for one switch However two are available Money back if not completely satisfied Ships very fast so you can get right to work Thank you
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