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    Nicholson Hi Capacity Thermostatic Trap (5 Posts)

  • Dave in QCA Dave in QCA @ 5:12 PM
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    Nicholson Hi Capacity Thermostatic Trap

    Here is a Nicholson high Capacity Trap.  Pipe size is 3/4".  Not sure what it is rated.  Never used.

    Best Offer plus actual shipping.
    Dave in Quad Cities, America
    Weil-McLain 680 with Riello 2-stage burner, December 2012. Firing rate=375MBH Low, 690MBH Hi.
    System = Early Dunham 2-pipe Vacuo-Vapor (inlet and outlet both at bottom of radiators) Traps are Dunham #2 rebuilt w. Barnes-Jones Cage Units, Dunham-Bush 1E, Mepco 1E, and Armstrong TS-2. All valves haveTunstall orifices sized at 8 oz.
    Current connected load EDR= 1,259 sq ft, Original system EDR = 2,100 sq ft Vaporstat, 13 oz cutout, 4 oz cutin - Temp. control Tekmar 279.
    http://grandviewdavenport.com
    This post was edited by an admin on February 7, 2013 7:58 AM.
  • Steamhead Steamhead @ 12:57 AM
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    Can't seem to find specs on that

    are there any more numbers on it? Do you know the seat orifice diameter? 
    "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.
  • Dave in QCA Dave in QCA @ 8:00 AM
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    I Will Open it and Check

    Frank, I will see if I can get this opened up and measure the orifice.  I also just corrected the original post.  The pipe size is NOT 2/3", it is 3/4"!  Ha!
    Dave in Quad Cities, America
    Weil-McLain 680 with Riello 2-stage burner, December 2012. Firing rate=375MBH Low, 690MBH Hi.
    System = Early Dunham 2-pipe Vacuo-Vapor (inlet and outlet both at bottom of radiators) Traps are Dunham #2 rebuilt w. Barnes-Jones Cage Units, Dunham-Bush 1E, Mepco 1E, and Armstrong TS-2. All valves haveTunstall orifices sized at 8 oz.
    Current connected load EDR= 1,259 sq ft, Original system EDR = 2,100 sq ft Vaporstat, 13 oz cutout, 4 oz cutin - Temp. control Tekmar 279.
    http://grandviewdavenport.com
  • Dave in QCA Dave in QCA @ 4:39 PM
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    the dimension is....

    Sorry for taking so long on this.  I tried to measure it and then forgot to get back to you.
    I took the top off of the trap and then used drill bits to try to determine the size of the opening.  1/4" bit was loose and sloppy in the hole.  3/8" would not fit.  I seem to be missing my 5/16" bit, but I'm guessing that is probably the size.  I also opened up a Dunham 1E and the orifice in that looked about the same size.  So, while it is a pretty nice size, it is not as big as I thought it would be.
    Dave in Quad Cities, America
    Weil-McLain 680 with Riello 2-stage burner, December 2012. Firing rate=375MBH Low, 690MBH Hi.
    System = Early Dunham 2-pipe Vacuo-Vapor (inlet and outlet both at bottom of radiators) Traps are Dunham #2 rebuilt w. Barnes-Jones Cage Units, Dunham-Bush 1E, Mepco 1E, and Armstrong TS-2. All valves haveTunstall orifices sized at 8 oz.
    Current connected load EDR= 1,259 sq ft, Original system EDR = 2,100 sq ft Vaporstat, 13 oz cutout, 4 oz cutin - Temp. control Tekmar 279.
    http://grandviewdavenport.com
  • Steamhead Steamhead @ 7:23 PM
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    OK, thanks

    it's not one of their high-capacity traps, then. 
    "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.
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