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    carla7853's Avatar
    carla7853 Posts: 1, Reputation: 1
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    #1

    Jun 18, 2010, 06:11 PM
    Itt general controls
    I have an old heater. The label underneath the case states Model G-36-S.D. input rating--35,000 BTU; output rating--24,500 BTU; equipped for use with natural gas. Holly Division of Leah Siegler, Inc. The unit (I believe it's the heater looks like it was replaced with another unit. The small unit says ITT Gen. Controls Millivolt operations; 1/2 PSI; SN#94390, Cat. #B67RA56. I'm missing a screw in the unit; do you know where I can buy that screw or part or the unit itself? Advise. Thx
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #2

    Jun 19, 2010, 12:22 AM
    Quote Originally Posted by carla7853 View Post
    I have an old heater. The label underneath the case states Model G-36-S.D. input rating--35,000 BTU; output rating--24,500 BTU; equipped for use with natural gas. Holly Division of Leah Siegler, Inc. The unit (I believe it's the heater looks like it was replaced with another unit. The small unit says ITT Gen. Controls Millivolt operations; 1/2 PSI; SN#94390, Cat. #B67RA56. I'm missing a screw in the unit; do you know where I can buy that screw or part or the unit itself? . advise. Thx
    A screw might be available at the hardware store.

    The gas valve you have is obsolete. The first link below confirms that a RobertShaw 710-502 is a replacement.

    Patriot Supply - 710-502

    The best price on one is on Ebay at.

    Robertshaw 710-502 Millivolt Gas Valve 7000MVRLC 710502 - eBay (item 290446523578 end time Jul-18-10 15:18:55 PDT)
    lesliepax's Avatar
    lesliepax Posts: 1, Reputation: 1
    New Member
    		  
    #3

    Nov 29, 2013, 01:39 PM
    I have an old Holly furnace and the gas valve is broken. It is a General Control Valve with these numbers on it: M5B07 CAT B60Y53.
    Thanks.
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