Sensus Model 143-80 domestic service regulators can be used on both residential and small commercial and industrial applications. With a variety of body sizes, loading springs, and orifice sizes, these regulators can provide the outlet pressure ranges and capacities to fit most applications for a 6″ service diaphragm regulator. The model 143-80 design provides the popular union nut connection, not requiring bolts or screws to connect the body to the diaphragm assembly. It is available with an internal relief valve (IRV), and with a low pressure cutoff (LPCO). Simple, rugged, precise and outstanding performance.