Manual 3 Way Valve Failure

For discussing the modifications needed for diesel vehicles to run with 2 tank veggie oil conversions.

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Manual 3 Way Valve Failure

Postby paulkrohn1 » Thu Aug 06, 2009 1:10 am

I use SunWizard's design and have three 3way valves mounted on the floor board. I like the simplistic design and it has been trouble free for 4000 miles now. I've noticed lately a change in the way the filter valve was operating. It seemed harder to turn one day then easier the next. It also stopped having the auditable click when swithing filters. Yesterday it failed on me when I switched over to WVO and must have stuck in between the normally closed port and the normally open port. Luckily I was only 30 miles from home and the tow wasn't to outragious.

Once home, I pulled te valve and bypassed it with a piece of 3/8 alum. tubbing. Dismantled the valve and found the valve stem had pulled out of the nylon ball valve. The top of the nylon ball had broke which alowed the stem to move out of the seating area.
I'll post some pics so you guys using these valves can get an idea of what I'm talking about. I just wanted to give other grease burner warning of possible failure on these valves. I'm hoping it's just a one time occurance and plan on replacing it with the same design.
98 12 Valve, BHAF, Fuel Plate, conversion in-process
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Postby rkpatt » Mon Aug 10, 2009 2:24 am

What brand of valves ?
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Postby paulkrohn1 » Tue Aug 11, 2009 12:25 am

I purchased them at iBoats and it's the brass 3way 1/4 inch female. They have a great customer service and sent another one out for replacement.

All three of the valves seem alittle hard to turn after I've been on WVO for more than forty minutes. My temps never get over 190 degrees on the hottest days towing over 5k pounds.

I'm happy with the manual system but for some reason the filter valve failed on me.
98 12 Valve, BHAF, Fuel Plate, conversion in-process
paulkrohn1
 
Posts: 23
Joined: Sat Mar 28, 2009 7:16 am
Location: PA

Postby rkpatt » Tue Aug 11, 2009 6:08 pm

I guess that is is better to buy all brass valves ( from www.mcmaster.com etc. )
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Postby paulkrohn1 » Tue Aug 11, 2009 11:14 pm

I've looked through McMaster and they have alot of quality parts however, I could not find a three way ball valve that has a long valve stem. I also need one that can be bolted to the floor board.

Thanks for the info.
98 12 Valve, BHAF, Fuel Plate, conversion in-process
paulkrohn1
 
Posts: 23
Joined: Sat Mar 28, 2009 7:16 am
Location: PA


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