Radiator Valve One Pipe

Bob W._3

With most one pipe valves in the open position for 70 - 130 years I can't see why anyone would bother, given the problems that could arise. I suppose if one was moving rads it might be worth it.

Joe Lambert

One Pipe Steam Radiator Valve

Need Product advice. It is a school dormatory situation with one pipe steam heating. The kids keep shutting off the radiator valves, and this causes water hammer. I want to put in the thermostatic vents and then do something with the valve so they cannot be shut off by the inmates ... I mean students.
Do you guys and gals know of a product like this. I heard of a valve that has a bleed for the condensate even though it appears closed but cannot find it, or a locking valve.
Any help will be appreciated. I searched on the Wall and got nowhere.

Long Beach Ed

In the Old Days...

There were a whole bunch of radiator valves that required a "key" to turn the stems. If you can't find any of those, how 'bout taking the knobs off?

Or if you tighten down on the packing nuts enough nobody will ever be able to turn those knobs.

If you have lots of time on your hands, replace them with elbows and unions.

Long Beach Ed

bob young

remove the damn handles. what could be simpler ??? they are not necessary.

Long Beach Ed

The only problem I see with removing the handles is that the somewhat pointy stems could be a hazard to little inmates. But if you replaced the screw with one with a large blunt head after lifting off the handles, it wouldn't be so sharp.

Hay, you can even stick a tennis ball on the stems. How's that?

Long Beach Ed

Kniggit

Ammark makes a One pipe steam valve, what diamater are you looking for? it allows condensate to drane back in the on and off positions, plus you can get a thermostatic head for it.

http://www.ammarkcorp.com/valves1.htm#90.125

bob young

t.r.v.

how long have these valves been around Mr. Kniggit ? if they do what they say they do & do it satisfactorily it sounds like a huge asset to balancing old steam systems. first i have heard of them.

Kniggit

Two to three years, that I know of but its quite the shocker of ideads. My brother totaly forgets every time someone asks, but what brought them to my attention in this instance is they are very blunt (no stem).

Christian Egli_2

Better then TRV on air vent for one pipe radiator

This thermostatic one pipe valve is brilliant. The main advantage over the thermostatic set-up on the vent is that you don't depend on boiler cycling to get thermostatic operation.

This is ideal on large systems where the boiler does not go off but you still want to modulate a radiator more than once.

The weak point, it seems is the rubber flapper check valve clogging with dirt. The installation manual shows how to clean them.

But of course there is no dirt in the bottom of steam radiators

Thanks Mr. Kniggit

Kniggit

sure would be nice to hear if people have used them, most of the homes around here with steam have one pipe systems, or they are gravity water, have not seen many two pipe steam systems here.