Barnes & Jones 3561C Cage Unit Cover for Nicholson 2A 1/2"&3/4" and 3 other models

Barnes & Jones 3561C: cover assembly for Nicholson 2A 1/2"&3/4" and 3 other models, matched to cage unit 3561.

Fits: Nicholson 2A 1/2"&3/4"; Nicholson 2R 1/2"; Nicholson 2L 1/2"; Nicholson N-125 1/2"&3/4".

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.