Barnes & Jones 3158 Cage Unit Cover for CU WW 1/2"#H W/SAR

Barnes & Jones 3158: cover assembly for CU WW 1/2"#H W/SAR, matched to cage unit 3158.

A Barnes & Jones cage unit contains every working part of a thermostatic steam trap, including the seat, calibrated together under steam at the factory and locked into a stainless steel housing. It drops into the existing trap body as a one-piece, removable, testable unit, with no loose parts to align or over-tighten. Type A units serve vacuum to 25 psig, Type B to 65 psig and Types C and D to 300 psig.