including the Dunkirk Q90-100 Series 2

this 1/2" NPT unit is designed for reliable on/off control of air

and organic acids that cause compressor failure

This is usually due to the switch failing to close its contacts when the inducer motor reaches the required differential pressure

As a universal service replacement

Sensus 143-62-023-40 Orifice 321894-706 including the Dunkirk Q90-100 SeriesThe Sensus 143 62 023 40 Orifice is a precision engineered 3 16" aluminum orifice designed for the Sensus 143 80 series domestic service regulators. Built to maintain a consistent pressure differential, this 3 16 inch gas orifice is essential for managing flow capacity in residential and light commercial meter sets. With a maximum inlet pressure rating of 125 psi when paired with the appropriate 143 80 model, it ensures stable delivery even during