The board includes a factory-installed vent damper jumper plug

These units are functionally identical

The sleeve bearing design is ideal for noise-sensitive installations

The Sporlan MKC-1E design allows for quick field installation

Sensus 143-IRV-3/4X1 Regulator 328140-751 The board includes a factory-installedThe Sensus 143 IRV 3 4X1 is a field proven domestic service gas regulator engineered for precision in residential and light commercial applications. This specific configuration features a 3 4" x 1" NPT straight body connection and a 3 8" stainless steel orifice, designed to handle moderate flow requirements while maintaining stable outlet pressures. Equipped with a Green Spring, the unit provides a reliable 6" to 14" w. c. outlet pressure range,