PVC cement

[BeltwayBandit]

I am doing a major rework of the plumbing in my tank. As a result I am switching my sump return and my closed loop return plumbing. In the process I will be adding a SCWD to my closed loop. I have to cut out a section of PVC piping and put in the hose barbs. What is the minimum time that I need to let the PVC cement cure before I can place this system back in use? While it is curing I will lose my closed loop circulation, and I want to minimize this time. Thanks.

 

BB

[davelin315]

It's supposed to be something like 24 hours, but I have to admit that once it's dry around the seal itself, I often will just run water through it in the sink for a few minutes and then put it on.

[dchild]

I have used PVC plumbing in my system immediately following the suggested 2 hr cure time. I do not generally rinse once it is assembled. Haven't killed anything yet...

[ErikS]

They say 24hrs.............but..........I have put it back in circulation as soon as the smell goes away (about an hour) with no ill effects (I've done it a few times - now I try to re-build back to a union, let it dry, and then replace the "nut" on the union = good to go)

 

Warning - just 'cause I got away with it doesn't imply that it's safe :D

[BeltwayBandit]

They say 24hrs.............but..........I have put it back in circulation as soon as the smell goes away (about an hour) with no ill effects (I've done it a few times - now I try to re-build back to a union, let it dry, and then replace the "nut" on the union = good to go)

 

Warning - just 'cause I got away with it doesn't imply that it's safe :D

47493[/snapback]

 

True, but if I act in reliance upon your information to my detriment, I can still sue you!!! J/K (sorry just got finished with my Torts exam..)

 

PS thanks for the info.

[DEEPBLUE]

I've been real bad about letting it cure, I used the primer and than the cement and 5 minutes later put it in use, and so far I've never had a problem.

 

Eric

[ErikS]

I can still sue you!!! J/K (sorry just got finished with my Torts exam..)

Yeah.....but I'm sure you're familiar with the "blood from a rock" expression?

[steveoutlaw]

Actually, DWV only needs 10 minutes to cure. If you are going to be using a pressure application you should wait at least 12 hours. They put 24 hours on the can to cover their asses.

[davelin315]

True, but if I act in reliance upon your information to my detriment, I can still sue you!!!  J/K (sorry just got finished with my Torts exam..) 

 

PS thanks for the info.

47501[/snapback]

 

Ahh, fond memories of 1L...

 

Now, assuming you did rely on Erik, and Erik chose a jury of his peers (meaning us), then we'd all be instructed on the finer points of law that Erik would be culpable only if a reasonable person would reasonably rely on hiss advice, and we all know that Erik simply can't be trusted! Hee hee! Had to get one in on you there!

 

Anyway, when I said I run water through it, that's typically after only a few minutes when the outside cement is hardened. I usually take a deep breath, blow out the piping, and then run cold water through it, which seems to make anything that is still wet immediately cure. I then put it into action. By the way, be careful of inhaling near the tube if you blow it out, I did that once without thinking and thought my lungs had collapsed.

 

Oh, and by the way, if you'd like any flashcards, I have some that were never used and never really made it out of the box. And, I have an extra set of law books since my wife went to school with me as well, so if you are looking for books, let me know which ones and I'll take a look through. I would not mind selling off a few of the old ones if you are in need. I remember the price of books, walking out of the bookstore each semester with a $600 bill for 5 books...

[ErikS]

Erik would be culpable only if a reasonable person would reasonably rely on hiss advice, and we all know that Erik simply can't be trusted!

I agree!! And to further the point BB has met said individual & has personal knowledge that this person's advice shouldn't be trusted.

 

darn skippy..............he should know better!

 

[xeon]

I wait less than an hour for sure, but do try and run some water through the pieces before putting it into action. Never had a problem.

[BeltwayBandit]

Oh, and by the way, if you'd like any flashcards, I have some that were never used and never really made it out of the box.  And, I have an extra set of law books since my wife went to school with me as well, so if you are looking for books, let me know which ones and I'll take a look through.  I would not mind selling off a few of the old ones if you are in need.  I remember the price of books, walking out of the bookstore each semester with a $600 bill for 5 books...

47559[/snapback]

 

Cool. Yeah it reminds me of my undergraduate days, fortunately Law books are cheaper than engineering books. I remember one semester I had $1100 in books!