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  #11  
Old 07-30-2011, 10:13 PM
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mitchgo mitchgo is offline
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What does a pack flow preventor do then?

It prevents a cross contamination between potable and non potable water

It is Cross Contamination because the piping is directly connected with eachother
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  #12  
Old 07-30-2011, 10:14 PM
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Mike Leary Mike Leary is offline
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Quote:
Originally Posted by Wet_Boots View Post
Try not to devalue your contributions by assuming your local customs are the law of the land. Besides, the upstream blowout valve is only an opportunity for someone to introduce contamination, and that is a different animal than an actual cross-connection.
That's typical east coast b.s.
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  #13  
Old 07-30-2011, 10:16 PM
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mitchgo mitchgo is offline
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ugh.. what ever I don't really care. I'm going back outside
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  #14  
Old 07-30-2011, 10:17 PM
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Wet_Boots Wet_Boots is offline
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Quote:
Originally Posted by mitchgo View Post
What does a pack flow preventor do then?

It prevents a cross contamination between potable and non potable water

It is Cross Contamination because the piping is directly connected with eachother
the phrase is "cross-connection" and no others need apply
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  #15  
Old 07-30-2011, 10:19 PM
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mitchgo mitchgo is offline
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connection contamination tomato tomato!

so you wanted to start all of this because my word wasn't entirely accurate? While the whole time you knew what I was implying?
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  #16  
Old 07-30-2011, 10:31 PM
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Wet_Boots Wet_Boots is offline
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Quote:
Originally Posted by mitchgo View Post
connection contamination tomato tomato!

so you wanted to start all of this because my word wasn't entirely accurate? While the whole time you knew what I was implying?
Don't imply anything. Get it right. The Washington State thinking is almost beyond parsing, according to what has been posted here, since the prohibition on upstream water connections would also prohibit the testcocks on the backflow preventer itself.

There are some building codes that look for a vacuum breaker on any hose bib on the potable water supply, and that has merit, because some fool might try to fill a jar with arsenic and spray weeds, or something similarly brilliant.
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  #17  
Old 07-30-2011, 10:40 PM
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mitchgo mitchgo is offline
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Hey I didn't say I agree with it. I just follow the codes, I didn't write them

and I don't represent washington.. I represent no one except for my self

your right.. I meant to say connection not contamination.. I don't know what I was thinkin.. Wrong word.. My bad.. Alll hell has now broken loose

Last edited by mitchgo; 07-30-2011 at 10:50 PM.
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  #18  
Old 07-30-2011, 10:48 PM
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Mike Leary Mike Leary is offline
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Complete b.s., Boots. We testers follow a code that includes WA, OR, CAL and BC. If you think we're paranoid about cross-connection, you're right because we take our responsibility very seriously. Go troll another site
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  #19  
Old 07-31-2011, 08:48 AM
johnboy37 johnboy37 is offline
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Thanks for the responses guys - seems like it is worth it for me to spend the $10 in parts and the 15 minutes before I bury the mainline to cut in a tee with a valve and a mpt adaptor to hook up the air to.
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  #20  
Old 07-31-2011, 08:56 AM
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DanaMac DanaMac is offline
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The best way is to blow out from a connection down stream of any backflow preventer. But we blew out through the PVB or RP on probably 700 of the 900 we did last year. Do it right, and you won't have a problem. it's not my preferred method, but I won't be able to convince the other 700 to change their set up when it's been done this way for years. And no way I would have time to change them all during the blow out season.

if we are doing freeze damage repairs in the spring for a customer, we add a tee in there for blowing out.
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