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Broomell Vapor

keith123 Member Posts: 103
Do any of my fellow wet heads know where to purchase replacement valves for this system. Particularly the vapor radiator valve and the Union elbow return.



  • keith123
    keith123 Member Posts: 103
    The quintuple valve
  • Steamhead
    Steamhead Member Posts: 16,722
    edited January 2019
    The valve may be repairable. @Gordo ?

    The elbow might just need to be cleaned- there's a small air vent hole in it that sometimes clogs.
    All Steamed Up, Inc.
    Towson, MD, USA
    Steam, Vapor & Hot-Water Heating Specialists
    Oil & Gas Burner Service
  • Gordo
    Gordo Member Posts: 852
    The closest equivalent that I know of is the Mepco SWRF - model C, which is a modern adjustable orifice valve. It just doesn't have the charm of the unobtainable Broomell valves, sad to say.

    It's the same issue for the Broomell ells. They are no longer available. You can use regular radiator ells, provided some means is used to meter the steam into the radiator, such as the aforementioned SWRF valve.

    The real secret to getting Broomell systems to work well starts with outrageously ultra low pressure from the boiler, no more than 4oz/in2.
    All Steamed Up, Inc.
    "Reducing our country's energy consumption, one system at a time"
    Steam, Vapor & Hot-Water Heating Specialists
    Oil & Gas Burner Service
    Baltimore, MD (USA) and consulting anywhere.
  • nicholas bonham-carter
    nicholas bonham-carter Member Posts: 8,576
    edited January 2019
    If the original valves are leaking, then put a 16 ounce vaporstat on the boiler, with a low pressure gauge, and keep the pressure “outrageously” low. At low pressure, the original valves may not leak.
    If the boiler is oversized, then investigate downfiring. Dave has suggested in another thread, removing some installation to compensate for the EDR difference between boiler, and radiation,


    Clean out the Broomell elbows, and if necessary install the Mepco metering valves. Gordo might still be able to advise on repairing the originals, or putting an orifice upwind of the original valve.—NBC
    Additional thoughts:
    Since the pressure is to be so low, a clean pigtail is a must, so put some unions on it for easy removal and cleaning, without having to disconnect the wiring. Make sure the air can get out of the main vent, as it begins to boil.
  • keith123
    keith123 Member Posts: 103
    Thanks guys. Much appreciated