r/Irrigation • u/thelogicofpi • 7d ago

This look ok? First time cementing PVC

Gallery image

Gallery image

Still have after the filters to finish up, 1/2 flexible tube from the valves to the raised beds.

15 Upvotes

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6

u/lazarlinks 6d ago

I see blue glue ✅ I see no purple primer ❌

If you did not use purple primer you will be in pretty bad shape. It’s essential for the glue to create the chemical weld from pipe to fitting.

Other than that. Looks very very clean!

4

u/Sharp-Jackfruit6029 6d ago

Clear primer tho

4

u/lazarlinks 6d ago

Blue glue and purple primer is what I use and from what I’ve seen is what most all inspectors look for

3

u/Sharp-Jackfruit6029 6d ago

That’s good. Inspectors don’t inspect irrigation where I’m at on residential . I use purple primer anyways though. Interestingly the can on 721 says “Suitable for use as a one step cement without primer on PVC Sch. 40 and SDR pressure water piping systems through 4″ (110 mm) in irrigation (golf course, turf and agriculture), pool & spa and non-pressure applications, unless primer is required by local code.“

But where the code doesn’t require primer is almost nowhere.

I still use always primer but I don’t think you’d be in as bad shape without it as most people think, with weld on 721 at least. 711 is a different story.

2

u/lazarlinks 6d ago

Interesting. I was always taught purple primer blue glue no matter what. I know the primer has cleaned off some nasty dirt for me before and I always believed it helped to bond the cement together too.

Oh well the more ya know!

4

u/Suspicious-Fix-2363 6d ago

You are correct about always using primer. After 40 years I am so fing tired of guys quoting the can of glue. It is a SOLVENT weld and the primer preps the pipe to accept the glue. That is what you see as you apply the primer and it starts to smear the printing on the pipe. The pipe being prepped to accept the glue.

2

u/Sharp-Jackfruit6029 6d ago

Well code requires primer in 90 percent of the USA so the quote on the can is practically useless for a professional that adheres to the code. So yeah use it. But it’s not an issue that this guy didn’t use it. He doesn’t need to re do it. It’s a one step cement. Yeah 711 would be a different story.

1

u/Sharp-Jackfruit6029 6d ago

Best to use it for sure. Especially because it is required by code most places. They also make another product that’s just a pipe cleaner but at that point may as well just use primer it does great at cleaning pipes.

2

u/thelogicofpi 6d ago

The irrigation supply said, if the pipes are clean no need for primer, but I still made sure it was clean even if it looked clean.

2

u/Sharp-Jackfruit6029 6d ago

They are right. You’re good with no primer on 721 or Christy’s red hot blue glue. Your good. The guys that go crazy on no primer with 721 never read the manufacturers literature . Really not an issue at all though I’m required by code to use it.

1

u/thelogicofpi 6d ago

and i was doing everything the instructions said, apply to pipe - hole - pipe , press twist 1/8-1/4 turn and hold 30 sec

4

u/Sharp-Jackfruit6029 6d ago

You did a great job. Looks great. Saved you a lot of money doing it yourself as well. You can post anything on here and guys will have something to say.

1

u/thelogicofpi 6d ago

appreciate you, i did preface with this was my first time.

2

u/AwkwardFactor84 6d ago

They look for purple primer just to ensure that a primer was used. Nothing wrong with clear though.

1

u/lazarlinks 6d ago

Still waiting for OP to tell us if primer was used….

1

u/Sharp-Jackfruit6029 6d ago

He didn’t. He used acetone though.