[RE-wrenches] Pt valves as overheat control

[holtek at sbcglobal.net]

I hate to be picky........the Myth Busters created an eruption....explosions require hypergolic materials. I need to go get something to do...........

Holt E. Kelly
Holtek Fireplace & Solar Products
500 Jewell Dr.
Waco,Tx. 76712
254-751-9111
254-228-9621 (cell)
holtek at sbcglobal.net
www.holteksolar.com

  ----- Original Message ----- 
  From: jay peltz 
  To: RE-wrenches 
  Sent: Tuesday, November 11, 2008 9:24 PM
  Subject: Re: [RE-wrenches] Pt valves as overheat control


  Hi Drake,

  I don't know if you ever watch Myth Busters, but google them and check  
  out the water tank they exploded.

  Short version is they took a standard 40 gallon electric tank, put  
  into a small building, no PT valve, heated it until it exploded.
  It flew something like 200' into the air, just amazing and super scary  
  to see.  I'm with Jeff, I'd put a second in just for safety.

  jay

  peltz power
  On Nov 11, 2008, at 4:40 PM, Drake Chamberlin wrote:

  >
  > At 09:15 AM 11/11/2008, you wrote:
  >> My question....is there a more robust version of that P/T valve
  >> that I should be using? Something that you would use in a boiler  
  >> perhaps?
  >
  > I'm not really a hot water guy either, but I'm scheming on putting  
  > in solar hot water with a wood stove backup loop.  I was thinking of  
  > using a valve from a dishwasher or washing machine.  They are  
  > electrically controlled, and designed to take hot water straight  
  > from the tank.  Control the electric valve with an aquastat.  If  
  > there is no place to thread the aquastat into the tank, it would be  
  > more difficult, but still possible with a bit of plumbing.  For sure  
  > the T/P valve would be needed for whenever the power went down.
  >
  >
  > Drake Chamberlin
  > Athens Electric
  > OH License 44810
  > CO License 3773
  > 740-448-7328
  > 740-856-9648
  >
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