minimizing system downtime for the contractor

the flange bolts should be tightened to approximately 300 inch-pounds to ensure a leak-proof assembly

Broad Compatibility: Works natively with Penn A419

For technicians troubleshooting erratic furnace behavior or total ignition control failure

Dwyer Instruments 475-2-FM Manometer 326058-758 minimizing system downtime for theFor veteran HVACR technicians and industrial contractors, the Dwyer Instruments 475 2 FM Manometer is the trade standard for measuring differential pressure in demanding environments. This intrinsically safe digital manometer is FM approved for use in hazardous locations (Class 1, Div. 2, Groups A, B, C, D, T4), making it the go to tool for monitoring natural gas pressure on boilers and combustion equipment. With a versatile range of 0 to 40. 00" w.