Barnes & Jones Steam Traps
THE “TRAP WITHIN A TRAP”
What Is A Cage Unit?
The Cage Unit is a “trap within a trap”—an integrated combination of all the working parts of the trap, including the trap seat. It can be easily installed at less than half the cost of a new trap without disturbing the piping.

Don’t Wait to Replace Your Traps!
- A faulty steam trap can . . .
- waste valuable heating dollars
- create hot and cold spots within a heating zone
- produce destructive water hammer
- lead to undue wear on, and premature failure of, other traps
|
THE MOST POPULAR BARNES
& JONES REPLACEMENT KITS |
|
|---|---|
| TRAP | ORDER # |
| Dunham–Bush #1E | 1950 with 1950C |
| Cover Dunham–Bush #2E | 1990 with 1990C Cover |
| Hoffman #17C | 3500 |
| Illinois #1G | 2818 with 2818C Cover |
| Marsh #1 | 1927 with 1927C Cover |
| Sarco Style “H” | 3146 |
| Sarco #TB-25 | 5000 with 5000C Cover |
| Sterling Type 7-50 | 3472 |
| Trane F&T Vents | 3354 |
| Trane #B1 | #4320, 2854, or 4270 |
| Warren–Webster 02H Series | 1972 |
| Warren–Webster 512 Series | 1998 |
Features of the BARNES & JONES Cage Units:
- No special tools needed
- Single replacement source
- Quick installation time
Factory Tested and Calibrated . . .
All parts are calibrated together under actual steam conditions and locked in precisely the correct relationship for a perfect balance. To the user, calibration means absolute uniformity of operation, greater sensitivity than perhaps was true with the original parts and simplified maintenance.
The Cage Unit is the only complete one-piece steam trap renewal containing all working parts of the trap, including the trap seat.
Barnes & Jones Cage Units Also Available For These Popular Brands:
- Amer. Sterilizer (AMSCO)
- Anderson
- Barnes & Jones
- Belknap
- Bestobell
- Bishop, Babcock
- Braukmann
- Cashin-Thermoflex
- Crane Valve
- Detroit
- Erwell
- Ideal
- Illinois
- Johnson Service
- Milvalco
- Milwaukee
- Nicholson
- Simplex
- Spirax
- Thermotrap
- Trerice
- Vapor Specialty
- Wiley (SIMPLEX)
- Yarway
Authorized distributor of more than 200,000 HVAC
parts & controls.
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