Moline steam traps

Roger Litman

I recently looked at a job that has about twenty Moline steam traps and I have not been able to get any info on them. They are oval about eight inches long with two 3/4 tappings 180° apart about 2 inches from the top and have a small tapping near the bottom. They are bright blue and have a joining flange about 3 inches from the top.They look a little like a large(ostrich) egg standing on its end. They are labeled as Moline #9. and are on unit heaters rated for 230,000BTUH.As they are hooked up to a boiler running at 10psig and the return has a Skidmore vacuum pump on it,I want to make sure that I understand their use before I modify the system.

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Unknown

Steam traps

A steam trap is a steam trap.

If the unit heaters donot have air release vents you need to replace the traps with a good float and thermostatic steam trap.

If the unit heaters have vent valves a Hoffman # 8 or 9 thermostaic trap is O.K. to install.

The vacuum pump is a critical piece of information.

If the return piping from the unit heaters go to the vacuum pumps you should not have vent valves on the unit heaters.

The condensate flow rate from the unit heaters is 250 lbs per hour a 3/4" steam trap will do.

Jake

Mike Kraft

Roger

Pick up Dans "The Lost Art Of Steam Heating Companion".There is a chapter on the Moline Heat.

cheese

DanHolohan

The traps Roger ran across

aren't in the book, Cheese. Always something new with steam!

Mike Kraft

I found some stuff..............

today thats not ine the books:)...........But what I do find in there oooo la la;)BTW how about a ringed binder for those steam books like the EDR??Huh Huh?:)

cheese

Roger Litman

Error in identification

The traps in question were made in Moline, but they are Illinois #7 G. Which I've been told are a simple F&T trap.

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tp tunstall

MOLINE

illinois,. the 7g is a 1 in f&t. complete repair kits are available at tunstall assoc. in massachusetts. btw this series f&t is also referred to as an "in line" f&t. inaddition there is no float in the unit but right side up bucket!! tp