Brochure

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Copyright 1987-2007 State Supply
Thermostatic Cage Units for Radiator Traps
Manufactured by Barnes & Jones for Steamco Industries, these Thermostatic
Cage Units replace the old, expensive thermostatic elements found in all the
different brand names of America’s steam heating radiator traps.
Buildings heated with steam waste as much as 30% of their annual heating
energy costs due to the failed thermostat inside steam traps.
Here’s how steam traps with failed thermostats waste so much money . . .
■ When traps fail, they normally fail in the open position: The thermostatic
element is retracted from the seat in the open position. Steam that should be
giving up its heat in the radiator, and thereby heating the room, is being
wasted. With the steam trap failed “open” the steam immediately blasts
through the radiator and heads back for the boiler.
■ Steam is meant to stay in the radiator, convector, unit heater, etc. until it
turns back into water — There’s a lot more “heat” in one pound of steam
than there is one pound of hot water. If the steam can’t stay at its point-of-
use it cant efficiently heat the surrounding area: Steam now races through
your return lines causing banging and equipment damaging water hammer,
rooms become both over and under heated and energy is lost.
Thermostatic Cage Units make Radiator Traps just like New!
■ The stainless steel positive tension spring, in conjunction with the tightening-
down of the radiator trap’s cover, locks the Thermostatic Cage Unit in place: The
Stainless Steel seat
(at the bottom of the cage unit) slides into the seat orifice at
the bottom of your existing radiator trap.
■ The Stainless Steel Cage surrounds the pressure balanced thermostatic element
and protects it from premature failure. The new high-temperature gasket sur-
rounding the Stainless Steel Seat
ensures a long-lasting, leak-proof seal.
■ The pressure balanced thermostatic element within the cage unit is open (raised
above the seat of the cage unit) when there is no steam present. When steam
enters the steam trap the thermostatic element closes tight against the seat of the
trap — Thereby preventing the steam from going beyond its point-of-use.
■ The thermostat retracts from the cage unit’s seat and opens once it no longer
senses steam. This allows the condensed steam (hot water) to enter the return
piping and flow back to the boiler, where it is once again turned back into steam.
Thermostatic Cage Units Save you Thousands of Dollars!
Get those radiator traps fixed. If you can’t remember the last time those steam traps on
your radiators were repaired — You’re in trouble!
■ Find your radiator traps. Record the brand name, model number and pipe size of each
steam trap. Also, record the room name where the steam traps are located.
■ Look through this catalog section for the brand name and model number of your original
radiator trap. Order the corresponding Thermostatic Cage Unit and, if *noted within the
ordering guidelines, a new steam trap cover.
■ Once your order arrives, grab that sheet of paper where you recorded steam trap infor-
mation and go to work: With the boiler off and your system cooled down — open the radia-
tor trap cover, take out the old thermostatic element, drop-in the new Thermostatic Cage
Unit, screw-on the steam trap cover — You’re done.
Thermostatic Cage Units are made to repair all brands and models of steam traps. They’re
especially great for repairing those old, “discontinued” radiator traps like Trane, Warren-
Webster and more! Used by building professionals throughout North America.
* Only 10% of Thermostatic Cage Unit installations require a new steam trap cover.
In the vast majority of cases you will simply re-use your old steam trap covers.
Stainless Steel seat goes
into the “old” seat or hole
in bottom of the trap.
Thermostatic
Cage Units
Tightening down the cover
locks the cage unit in place
Barnes & Jones Thermostatic Cage Units