Request for help identifying radiant heating valve

nm99

A number of our radiant heating valves have failed and require replacement. Unfortunately the original installer appears to no longer be in business, and neither our HVAC repairman nor the staff of the local HVAC supply store can identify the make or model. I have been able to confirm that they are not Uponor/Wirsbo products.

Assistance from anyone who can identify them from the attached photos (including one of the manifold, in case that's helpful) would be greatly appreciated. It's perhaps worth noting that the valves would have been originally installed in 2003.

EdTheHeaterMan

ROTH made a radiant floor manifold that looked like Wirsbo. I wonder if it is a ROTH?

Also check the European vendors.

hot_rod

Are you using actuators, or just the plastic caps?
You might consider a new manifold, something like this if you are not zoning with actuators.
so many manifolds looked like that, probably an OEM
Legend, Embassy, vanguard, Heatway, most all the pex brands

nm99

EdTheHeaterMan said:

ROTH made a radiant floor manifold that looked like Wirsbo. I wonder if it is a ROTH?

Also check the European vendors.

Thanks for the suggestion. I couldn't find any similar manifolds or valves in the current Roth catalog, so it would seem that they no longer make the Wirsbo lookalike. I have made an extensive search of valves available online, including from European vendors, without finding anything that matches.

nm99

hot_rod said:

Are you using actuators, or just the plastic caps?
You might consider a new manifold, something like this if you are not zoning with actuators.
so many manifolds looked like that, probably an OEM
Legend, Embassy, vanguard, Heatway, most all the pex brands

Thanks for your response to my questions. We have two manifolds like this, one with actuators, and the one in the attached image just with valves and plastic caps that depress the valves by a variable amount for zone balancing. We'll probably have to replace the manifolds if we can't find suitable replacement valves, it would be better to avoid that due to the considerable cost.

Alan (California Radiant) Forbes

I think you’re going to have to bite the bullet here as those pin valves are going to be very hard to find. Not only do the threads have to match, but also the throw length (travel) of the valve. 

nm99

Alan (California Radiant) Forbes said:

I think you’re going to have to bite the bullet here as those pin valves are going to be very hard to find. Not only do the threads have to match, but also the throw length (travel) of the valve. 

You're probably right. It seemed worth a try, though, since I doubt the original installer used anything really obscure.