Barnes & Jones 5005 Type A Thermostatic Cage Unit for National Pump (Amer. Steam) 2NC 1/2" Vert.

Barnes & Jones 5005: Type A thermostatic cage unit for National Pump (Amer. Steam) 2NC 1/2" Vert..

Fits: National Pump (Amer. Steam) 2NC 1/2" Vert..

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.