Value Brand 1-1/2" MNPT x 4-1/2" TBE Galvanized Steel Pipe Nipple Sch 40

1-1/2" MNPT Galvanized Nipple

This 1-1/2 inch nominal pipe size nipple is made from galvanized steel and rated for Schedule 40 pressure classes. It suits plumbing contractors and maintenance teams joining air, gas or potable-water lines in residential or light-commercial systems. The 4-1/2 inch overall length bridges short gaps between threaded fittings without field cutting. Electric-resistance-welded construction provides a consistent bore for unrestricted flow.

Galvanized Coating & Pressure Ratings

The zinc coating resists corrosion in damp or outdoor installations, extending service life compared with bare steel. Maximum operating pressure is 300 psi at 150 degrees F for liquid service and 150 psi at 350 degrees F for saturated steam. These limits let the nipple serve in compressed-air headers, low-pressure gas distribution and hot-water circulation loops without additional derating.

Threaded Installation Notes

Male NPT threads on both ends engage standard Schedule 40 fittings using pipe dope or PTFE tape for a leak-free seal. Over-tightening can distort the thin-wall weld seam, so hand-tight plus one to two turns with a strap wrench is typical. The 1 57/64 inch outside diameter clears most 1-1/2 inch class hangers, but installers should verify hanger spacing against local code before final tightening.