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Author:
Anonymous User
What are the ramifications of not inserting "stub-outs" (at least that's what I think they're called) in the hot and cold supply lines going to a shower valve? By "stub-outs", I mean the copper pipes that "T" off of the main hot & cold lines and travel upward a few inches to a dead end just beyond the valve. I obviously failed to do so. How bad a situation am I in???
Thanks!!
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Author:
HytechPlumber (LA)
On certain single handle mixing valves a water hammer in the pipes is possible. If not installed on initial rough in I would not address it until it becomes a problem. I once stopped water hammer from a single handle mixing valve by installing hammer arrestors at the water heater location. GOOD LUCK
Post Edited (05-29-03 23:23)
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Author:
Anonymous User
what you are referring to are air chambers ,a kind of water hammer eliminator that we used to field fab and install tonegate any hydraulic shock caused by the action of a quick closing valve.washing machine valves are another good example of this.these are now frowned upon due to the mindset that bacteria could,over tim e,develop in a stagnant chamber.manufactured shock arrestors are now used as required.regarding your shower valve install-if you secured your valve and supply lines properly generally speaking,you'll be fine.
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Author:
Anonymous User
plumbcrazy, the "air chambers" concept sounds like what these things are for. It's a remodel, and the chambers were there before I tore it all out, so I assumed they needed to be there. Your words are VERY good news! So basically you're saying that I did myself a favor? Excellent! Are the hydraulic "hammer arrestors" you find at Home Depot, Lowe's, etc. thought to develop bacteria too, or are they OK? These just minimize the "BANG" noise when the water is shut on/off, right?
Thanks for your help!!
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Author:
Anonymous User
blaronn, you are welcome.to answer your question about shock arrestors- they can be installed with a tee inline and are pre-charged so there's no real area for anything to grow or accumulate.as for the rest, sounds like you got the idea.good luck.
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Author:
Anonymous User
plumbcrazy... air chambers are frowned on because they don't work, the water absorbes the air within a few short weeks... it's been proven yet plumbers still put these silly stub's in.
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Author:
PLUMBILL
And Architects and Engineers still spec. them, draw them in on plans because; they went to a school that still trains them with a plumbing code that is 40 years old.
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Author:
Anonymous User
Thanks guys! My mind is at ease and now I'll be able to sleep tonight.
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