Barnes & Jones 3890 Type A Float & Thermostatic Cage Unit for Warren Webster 273 3/4" and 4 other models

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Barnes & Jones 3890: Type A float & thermostatic cage unit for Warren Webster 273 3/4" and 4 other models.Fits: Warren Webster 273 3/4"; Warren Webster 274 1"; Warren Webster 275 1 1/4"; Warren Webster 276 1 1/2"; Warren Webster 278 2".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. Show more