Rebuilding valves
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"Norwall" but as a former resident of a Norwalk this caught my eye
NJ Steam Homeowner.
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Do these radiators have regular steam traps on the outlet?0
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They used to. At some point in the past, the system went from two pipe to one pipe.0
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Remember that if it's one pipe, the steam inlet valves must be either fully open or fully closed. If your tenants/occupants are fiddling with them, you will have problems...Br. Jamie, osb
Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England0 -
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yes.
All good points. The systems is a moderately sized house. The new valves leave an offset. Additionally, the riser cannot be reached easily to allow a back up wrench to bite either. Though, I have been able to open the old valve body. So, I have not played the old valve lottery often but I'm looking at my chances.
Old house, craftsman style. Inlaid hard wood floors and original windows.0 -
Is it a bellows type seal or is there just a packing at the bottom with the threads above in that cylinder?0
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From what i can see is the stem is segmented and the seal at the bottom is a soft gasket. the knob turns a short shaft which in turn turns another onto the seat. The valve is the 'packless' variety. Dry rusty bits fell out when I opened it. So I cannot know exactly how the valve is originally fitted.
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Why in the world would someone convert a two pipe system to a one pipe?
Located in durham NC.
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If the original valves are not leaking, then leave them in place. If leaking, then maybe the pressure is too high. Install a vaporstat and more main venting.—NBC0
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Who knows. The world is a wonderful and mysterious place...luketheplumber said:Why in the world would someone convert a two pipe system to a one pipe?
Br. Jamie, osb
Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England3 -
Someone probably didn't know how to repair it or was tired of replacing steam traps that were being damaged from some other system problem. Could have been some odball non-trapped system that they didn't understand.Jamie Hall said:
Who knows. The world is a wonderful and mysterious place...luketheplumber said:Why in the world would someone convert a two pipe system to a one pipe?
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Whatever you do, don't let them tear out the original windows to chase after the lie of energy-cost payback from new windows. I've read estimates ranging from 40-year to 100-year ROI from new windows, and that generously assumes that the new windows won't fail during that time period.Boilershepherd said:y
Old house, craftsman style. Inlaid hard wood floors and original windows.
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Thanks for all the advice and points of view.
Just to circle back to my original question,
Is it possible to find the internal elements to rebuild this type of valve?
I’ve explored the interwebs but have found no sources. Where can a person look?
Thanks again in advance.
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I am impressed that you removed the spud from the radiator without damaging it.0
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Jamie Hall said:
Who knows. The world is a wonderful and mysterious place...luketheplumber said:Why in the world would someone convert a two pipe system to a one pipe?
Makes me think of the Russian proverb:JUGHNE said:If it is a one pipe, I don't see anything gained by rebuilding the old valves.
Actually new valves may have more capacity for counter flow steam/condensate usage.
It is surprising that the supply pipe is large enough for one pipe functions.
"The marvel is not that the bear dances well, but that the bear dances at all."0 -
I disassembled a couple of the Norwall packless valves today. These were more or less near fossils. A spring is in the layers, I can see this. With these, hopefully, I can replace other valve stem assemblies once/if these get restored.
I cannot find illustrations or images of the original parts. If one was to do it from scratch, what is the material of the packing one would use? Or the material for the washer at the seat?
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The manufacturer may be Marsch0
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