DIY Chatroom Home Improvement Forum

DIY Chatroom Home Improvement Forum (http://www.diychatroom.com/)
-   Plumbing (http://www.diychatroom.com/f7/)
-   -   Y U install unions/shut off on a HWH (http://www.diychatroom.com/f7/y-u-install-unions-shut-off-hwh-190630/)

biggles 11-19-2013 09:06 AM

Y U install unions/shut off on a HWH
 
so when it takes a dump years later ..you don't have to torch :wink: hot /cold? fittings out ..:thumbsup: fittings in...2 beer job on a Saturday afternoon http://i275.photobucket.com/albums/j...ps841f030d.jpgflushed this guy since 1989 every fall

joecaption 11-19-2013 09:14 AM

There should never be a shut off on the hot side.
Good luck trying to get a gate vale to stay closed and not leak by while your working on it.

TheEplumber 11-19-2013 09:16 AM

Quote:

Originally Posted by joecaption (Post 1268660)
There should never be a shut off on the hot side.

Why not?

joecaption 11-19-2013 09:30 AM

Valve req’d on cold-water supply at or near WH____[2903.9.2] {605.2}n Valve must be full-bore type F41,42_______________[2903.9.2] {605.2

TheEplumber 11-19-2013 09:38 AM

Biggles- seen a lot of Kenmores last a long time- especially when you flush and maintain them like that. I like the record keeping system:wink:

Quote:

Originally Posted by joecaption (Post 1268669)
Valve req’d on cold-water supply at or near WH____[2903.9.2] {605.2}n Valve must be full-bore type F41,42_______________[2903.9.2] {605.2

I know they're required on the supply side. All equipment and fixtures require approved unions and valves.

joecaption 11-19-2013 10:06 AM

I guess the logic is some one shuts off the hot side, thermostat fails and pressure continues to build.

raylo32 11-19-2013 11:14 AM

But even w/o valves pressure would build anyway--until it fully compressed the bladder in any expansion tank-- before the P&T finally lifts. I have valves on both sides of mine. Makes replacement truly a 2 beer job since don't have to drain hot and/or cold water lines for 3 floors.. and then have to vent and refill them all..

jmon 11-19-2013 11:25 AM

Nice set-up biggles. Quick and easy to swap out. Next time you have to replace it, in the interest of future proofing, I would replace those gate valves with ball valves. Just a thought.

biggles 11-19-2013 05:01 PM

I drain it into a 5 gallon bucket to see what drops down as it drains to see what it gives up every year.some rust that looks like sand once in a while.the trick with the unions.... if the pipes come in on the horizontal they are liberal to the new HWH refit.if they drop down in a fixed mounted vertical drop you have to be more careful,and pop that relief randomly thru the year

plummen 11-19-2013 08:47 PM

Quote:

Originally Posted by TheEplumber (Post 1268662)
Why not?

Its ilegal around here to install shut off on hot water side of heater around here.
I saw the results of a capped off pop off valve on a house south of here years ago,pushed a really big piano into the head board of a bed when nobody was home(lucky for them:eek:).
Its considered bottling ,if the pop off doesnt give and that valve gets shut by a home owner for some reason it can be really ugly.
We also demonstrated it on a water heater in the middle of a field back when I still taught.
Plugged the pop off then filled heater with water and put pipe plugs into top of heater to bottle it.
Put a coleman stove under it and let it cook for around 30 mins while we watched from a telescope,cleared the top of the tree line and hung a left turn across the field.
The class was impressed!:laughing:

TheEplumber 11-19-2013 09:11 PM

Quote:

Originally Posted by plummen (Post 1268882)
Its ilegal around here to install shut off on hot water side of heater around here.
I saw the results of a capped off pop off valve on a house south of here years ago,pushed a really big piano into the head board of a bed when nobody was home(lucky for them:eek:).
Its considered bottling ,if the pop off doesnt give and that valve gets shut by a home owner for some reason it can be really ugly.
We also demonstrated it on a water heater in the middle of a field back when I still taught.
Plugged the pop off then filled heater with water and put pipe plugs into top of heater to bottle it.
Put a coleman stove under it and let it cook for around 30 mins while we watched from a telescope,cleared the top of the tree line and hung a left turn across the field.
The class was impressed!:laughing:

YouTube has several exploding WH videos :thumbup: They're entertaining to watch for sure.

I was just messing with Joe earlier. I can't recall putting two valves on a residential heater but have done so many times on commercial applications- never been called on it when inspected by the plumbing inspectors, engineers or even the corp of engineers at military sites.

I totally understand the reasoning behind bottling and as the code says- AHJ has the final say.
I can pipe my T&P's outside- which I understand is not allowed in other areas. But we cannot pipe it to the pan.....
The minor list of code differences goes on and on.......

biggles 11-19-2013 09:51 PM

opinions on hard piping the HWH off the supply,HD sells the flex lines as HWH lines then my gas company National Grid condems them

plummen 11-19-2013 10:14 PM

I always kind of grouped the flex copper water heater lines in with trac pipe,green field/flex......
Of course i still remember some of the older guys I worked with as a kid complaining about that damn new fangled thin walled e.m.t conduit,saying it would never be as good as rigid pipe!:laughing:


All times are GMT -5. The time now is 10:00 PM.


Copyright © 2003-2014 Escalate Media LP. All Rights Reserved