pvc
#1
12-06-00, 01:16 PM
hello
can i cement a piece of 1/2" pvc into a piece of 3/4" pvc pipe to hold the 35 lbs. pressure at my out door faucet?
thanx
peter
can i cement a piece of 1/2" pvc into a piece of 3/4" pvc pipe to hold the 35 lbs. pressure at my out door faucet?
thanx
peter
#2
12-06-00, 01:48 PM
Banned. Rule And/Or Policy Violation
Join Date: Dec 1999
Location: Northeastern NC On The Albemarle Sound
Posts: 10,701
Upvotes: 0
Received 1 Upvote
on
1 Post
Sure, but you have to use a 3/4"-to-1/2" reducer pvc fitting for it to hold water pressure.
Can't just glue two pieces of different sizes direct to each other.
Can't just glue two pieces of different sizes direct to each other.
#4
12-06-00, 03:29 PM
Banned. Rule And/Or Policy Violation
Join Date: Dec 1999
Location: Northeastern NC On The Albemarle Sound
Posts: 10,701
Upvotes: 0
Received 1 Upvote
on
1 Post
Hi, Peter!
I'm not a plumber, but cpvc (for hot water lines) and pvc (for cold water and drain lines)fit together fairly tightly in order to bond (think of the glue as chemically melting, as in welding, the two pieces together with very little tolerance).
Both pieces need to be clean, dry and sanded to create a tight bonding surface. I've worked with pvc plumbing for many years, and I've just never known it to hold under pressure without the proper (same) size fitted together.
Just ask for a 3/4"-to-1/2" reducer fitting. Could be a bushing, or an o.d. fitting. Depends on what you need. Just look around the plumbing section, and you'll see all kinds of fittings.
After cleaning and sanding, I would use pvc primer and then glue, THEN you know it won't fail under pressure.
Edit: And always give your fittings a "push-together and quarter-turn twist" just after you glue them to be sure that they're seated fully and the glue is evenly distributed.
Good Luck!
[Edited by OldGuy on 12-06-00 at 09:35]
I'm not a plumber, but cpvc (for hot water lines) and pvc (for cold water and drain lines)fit together fairly tightly in order to bond (think of the glue as chemically melting, as in welding, the two pieces together with very little tolerance).
Both pieces need to be clean, dry and sanded to create a tight bonding surface. I've worked with pvc plumbing for many years, and I've just never known it to hold under pressure without the proper (same) size fitted together.
Just ask for a 3/4"-to-1/2" reducer fitting. Could be a bushing, or an o.d. fitting. Depends on what you need. Just look around the plumbing section, and you'll see all kinds of fittings.
After cleaning and sanding, I would use pvc primer and then glue, THEN you know it won't fail under pressure.
Edit: And always give your fittings a "push-together and quarter-turn twist" just after you glue them to be sure that they're seated fully and the glue is evenly distributed.
Good Luck!
[Edited by OldGuy on 12-06-00 at 09:35]
#5
12-06-00, 04:25 PM
Member
Join Date: Oct 2000
Location: Katy (Houston area) TX USA
Posts: 1,309
Upvotes: 0
Received 0 Upvotes
on
0 Posts
#6
12-06-00, 09:21 PM
npd424, what are you looking at?? I just tried to slip a 1/2" PVC pipe into a 3/4" PVC pipe, and it won't fit. The O.D. of the 1/2" is greater than the I.D. of the 3/4". Only thing I can come up with is that you are looking at pipe that is less than Schedule 40. If that is the case, don't use the pipe you have in your garage for this project. Upgrade it to Schedule 40, use the proper fittings to do what you want to do. and be happy. The alternative is to save about a dollar by using Class 125 pipe, and suffering hundreds, or thousands of dollars of damage when it fails!! It's your money!
3/4 to 1/2 reducer fitting
