Barnes & Jones 3551 Cage Unit Cover for CU 3/4"B&B & M/Y

Barnes & Jones 3551: cover assembly for CU 3/4"B&B & M/Y, matched to cage unit 3551.

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.