Backflow preventer dripping water

[beernbombs]

Is it normal for the vent discharge line to drip constantly? It's dripping more than once per second.

 

[Chris]

That one is not familiar to me at all but with the larger ones I deal with it is usually something stuck in the check valve inside. I usually turn there water on and off a few times and sometimes it will clear it out and stop the drip.

 

[johnjh2o]

That can't be a approved back flow device, there is no way to test it. Just what is it supplying?

John

 

[beernbombs]

Supplied by our plumbing contractor, approved by city inspector, supplies soda fountain/carbonator.

 

[beernbombs]

That one is not familiar to me at all but with the larger ones I deal with it is usually something stuck in the check valve inside. I usually turn there water on and off a few times and sometimes it will clear it out and stop the drip.

Thanks, I'll give this a try.

 

[beernbombs]

That didn't stop the drip. Does the drip suggest there may be excessive pressure building up?

 

[Chris]

I doubt the pressure would cause a problem. Did it start immediatly after install or some time later? Was any other parts of that contraption added at a later date?

Is that small part servicable? I see hex heads on both sides but doe it come apart? If so you could pull it apart and see if anything is stuck in there or if whatever valve it has inside is broken. You could also replace that check.

 

[Fireguy97]

That can't be a approved back flow device, there is no way to test it. Just what is it supplying?

John

John, That is the only approved backflow device for a carbonated beverage machine. It's not testable, but it is replaceable.

http://www.wattscanada.ca/pages/_products_details.asp?catId=1160&parCat=1188&pid=890&ref=2

Mick

 

[Fireguy97]

Supplied by our plumbing contractor, approved by city inspector, supplies soda fountain/carbonator.

Replace it

Mick

 

[phishfood]

Thanks, FireGuy.

 

[beernbombs]

Replace it

Mick

Is it worth trying a repair kit? Or should I just replace the whole check valve? Looks like a $60 difference.

 

[Fireguy97]

I didn't know that they had a repair kit for the stainless carbonator Check Valve. If you can find or order it, then go for it. I would imagine that it wouldn't be a stockable item. The Carbonated Check valve is normally an off the shelf item.

It's normally not worth it to my clients for my time to rebuild it. Something this size is faster and less expensive to replace than with my labor fee to rebuild.
Mick

 

[beernbombs]

Repair kit has been installed and drip has stopped. I examined the replaced parts and couldn't see any defects. Guess it doesn't take much to cause a leak.

Watts repair kit for the SD-3.

 

[phishfood]

Thanks for the update.