Warren Webster 712 hb, lb & rb rebuild

tim smith

Hey all, this was the apt bldg we were going to orifice but now the owner is not going for a full remodel, ie new windows, wall insulation etc. I checked the output on radiators and they are not quite big enough to derate them to 70% of edr so no go.
1st, anyone have any input on what the hb, lb & rb denote or is it inconsequential.
2nd, What are all your preferences, replace element with Barnes & Jones replacement elements or go Tunstall capsules?? Per Barnes & Jones, no new cap. remove orifice.
Thanks in advance,
Tim

Mad Dog_2

B & J is excellent and So is Tunstall.  Not sure about B & G, but I know Tunstall is a small, family owned Company.  Noel Murdough (RIP) turned me on to them and Gorton #2s.  Woody Tunstall is great to deal with as is everyone that works there.  Very quick turnaround also.  I love the B & J Big Mouths so I still use them.  Can't go wrong with either company. Mad Dog 🐕 

tim smith

Thanks Matt for your insight.
Tim

JUGHNE

IIRC, I did some of those with B&J as the original cap could be used.

The "L" and "R" might be left or right discharge.

Steamhead

The B&J catalog for Webster traps is here, scroll down to get to it:

https://barnesandjones.com/products/repair-guide/thermostatic-t/

The 712HB would be the standard pattern. Do the LB and RB traps have their discharge pipes going anywhere but down? Post pics if you can.

tim smith

I ended up with Tunstall capsules and the Webster Sylphon valve rebuild kits from Tunstall. Went real smooth on appx 120 radiators or so.