thermostatic radiater valves

ed wallace

hi i ran into some strange thermostatic radiator valves on a one pipe steam job today they screw into air vent opening on rads they are piped up as follows radiator, then nipple, and tee ,auto air vent on tee like on a hot water rad nipple, than tee with steam air vent ,than the thermostatic rad valve, custermer told me they had to turn it on and off a few times to get it to work any ideas about who might make one of these?

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tp tunstall

maconcontrols.com

ed...those may have been some of the original prototype or thereabouts in the early 70's before we perfected the operation. look on the website www.maconcontrols.com and click on one pipe steam valves model opsk. many people swear by these. we should have got a patent. many people , danfoss,braukman,etc have copied with varid results etc. tp

ed wallace

rad valves

thank you very much i knew somebody would know

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