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1968 Buyer beware

franklinair

Well-known member
Joined
Mar 1, 2007
Messages
4,738
I now have to replace the SECOND heater water control vacuum valve. I use the more expensive (correct) valve for this.
The FIRST one had the vacuum diaphragm leak. This SECOND one leaks fluid around the base. (I did check the screws' torque prior to installation) You can see the green anti freeze fluid at the base.
I'm going to make a new gasket for the base to seal the leak. (But of course I have to drain the system first):mad:
The track record for these valves is not too good.

Neil
 

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Ruppstang

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May 22, 2009
Messages
3,024
Neil does it have a grove machined in to the base like the originals? If so I use a O ring and some silicone and do not have much trouble with them.
Marty
 
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franklinair

franklinair

Well-known member
Joined
Mar 1, 2007
Messages
4,738
There's no Mfr name on the valve, only a part number, 6860-134.
When ordering through NPD, their P/N is 18495-1A, $59.95.

Neil
 

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stangfan

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Jun 12, 2012
Messages
1,840
Location
Victoria BC Canada
Neil, have you phoned NPD to tell them about the problem? They sent me a replacement starter solenoid when mine failed. Express shipped it too, at no cost to me.
 
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franklinair

franklinair

Well-known member
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Mar 1, 2007
Messages
4,738
I e-mailed NPD recounting 2 failed units. (one vacuum diaphragm failure, one leaking coolant)
I disassembled the leaking valve: The vertical chamber is PRESS FITTED into the triangular base, and that is where it is leaking. I might try some JB Weld around the base to stop the leak.
I'm not a happy camper, with TWO faulty parts @$60ea + shipping, not to mention the work involved.
I'll keep you posted.

Neil
 

stangfan

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Joined
Jun 12, 2012
Messages
1,840
Location
Victoria BC Canada
I would phone them if I was you. Their number is toll free, and I find talking directly to a service rep gets you better/quicker results. Also, gets rid of some of the stress you feel when a part craps out.
 
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franklinair

franklinair

Well-known member
Joined
Mar 1, 2007
Messages
4,738
I got an e-mail in response to mine. Apparently OLD AIR in TX is NPD's supplier for this valve. They called me and are sending me a new valve, and are going to follow up & check their manufacturing process.
I'm sure the 2 failures I experienced are the exceptions, but its good to have confirmation from NPD and their supplier to follow up.

Neil
 
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