Barnes & Jones 1721 Type A Thermostatic Cage Unit for Barnes & Jones 12 2x3 and 32 other models

Barnes & Jones 1721: Type A thermostatic cage unit for Barnes & Jones 12 2x3 and 32 other models.

Fits: Barnes & Jones 12 2x3; Barnes & Jones 12C 1/2"; Barnes & Jones 120 1/2"; Barnes & Jones T120 1/2"; Barnes & Jones 122A 1/2"; Barnes & Jones 122S 1/2" and 27 more.

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.

Manufacturer documentation: product literature.