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Dahl valves discontinued?

Tommi68
Tommi68 Member Posts: 46
in Strictly Steam
My usual supplier is having difficulty sourcing 1" NPTxU steam service valves from Dahl. They discontinued supplying the replacement cartridges a while ago.
I like using a Canadian valve, it is the standard across 400+ radiators that we maintain.
IF Dahl has stopped production, what is a suitable, domestic valve available?
Alan (California Radiant) Forbes

Comments

  • Alan (California Radiant) Forbes
    Alan (California Radiant) Forbes Member Posts: 4,214
    I love Dahl valves. Use their hose bibbs, angle stops and partition stops.
    8.33 lbs./gal. x 60 min./hr. x 20°ΔT = 10,000 BTU's/hour

    Two btu per sq ft for degree difference for a slab
  • mattmia2
    mattmia2 Member Posts: 10,950
    Alan (California Radiant) Forbes said:

    I love Dahl valves. Use their hose bibbs, angle stops and partition stops.

    How do they hold up? It seems like they are just sealed with o-rings and those are going to fail one day when i need the valve to work when the faucet or ballcock fails and ruin my day because i can't just open them up and replace a washer or some packing like with a globe valve.
  • Alan (California Radiant) Forbes
    Alan (California Radiant) Forbes Member Posts: 4,214
    @mattmia2 I've been using them for a long time now - 20 years or so - and have never had one go bad. They must use good o-rings.
    8.33 lbs./gal. x 60 min./hr. x 20°ΔT = 10,000 BTU's/hour

    Two btu per sq ft for degree difference for a slab

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