Sealing pvc threads

[clownfish.mike]

I already searched for similar threads but the issue is I ordered the Plasto Joint Stik on Amazon as recommended by others. Others said it was potable water safe and non-toxic. However after receiving the product it says it is for non-potable water applications only. Is it still safe to use? I have a threaded pvc fitting on a threaded bulkhead (main drain).

Thanks

 

[Tonycass12]

I'm a huge fan of liquid Teflon. And you can find it at most of the big box stores as well as local hardware shops. Never had a threaded fitting leak that I've used liquid Teflon on.

 

[Zeefishies]

i would use Teflon

 

[clownfish.mike]

I'm a huge fan of liquid Teflon. And you can find it at most of the big box stores as well as local hardware shops. Never had a threaded fitting leak that I've used liquid Teflon on.

i would use Teflon

Do you guys recommend a specific brand or have a link?

 

[KrisReef]

Teflon paste- thin layer posses no threat ime.



Or

Oatey Great White White Pipe Joint Compound 4 oz - Ace Hardware

Oatey® Great White® Pipe Joint Compound With PTFE is a non-hardening, non-separating, non-toxic paste that lubricates and seals all threaded joints. Great White can be used on plastic or metal threads. Oatey products have earned the trust of plumbing professional for over 100 years.Find the PIPE...

www.acehardware.com

Made for home drinking water supply use.

 

[redfishbluefish]

First off, don't use Teflon tape. The tape could cause the joint to crack from being too tight....this right from the association overseeing PVC pipes (I can't remember their name).

Use a pipe dope specifically made for PVC pipe fittings. Here's the stuff I use right from HD.

 

[areefer01]

There are a few different threads here on the pro, and cons, of using both thread sealant and teflon tape. Both work perfectly fine with used correctly.

Dealers, er, hobbyist, choice and preference.

 

[Tonycass12]

Do you guys recommend a specific brand or have a link?

Oatey Great White Pipe Joint Compound 1 oz. - Ace Hardware

Oatey Great White Pipe Joint Compound With PTFE is a non-hardening, non-separating, non-toxic paste that lubricates and seals all threaded joints. Great White can be used on plastic or metal threads.Find the PIPE JNT CMPND GRTWHT1OZ at Ace.

www.acehardware.com

 

[clownfish.mike]

Thanks all. I picked up the Oatey Great White. I’ll return the Plasto Joint Stik.

 

[BeanAnimal]

First off, don't use Teflon tape. The tape could cause the joint to crack from being too tight....this right from the association overseeing PVC pipes (I can't remember their name).

Use a pipe dope specifically made for PVC pipe fittings. Here's the stuff I use right from HD.

Tape is fine, approved (and in many jurisdictions REQUIRED by building code). There is typical boilerplate being copied from one site to the next as PVC do/don't gospel.

Too many wraps it will create a problem, but not so much because it makes the pipe "bigger" it adds a high degree of lubricity and allows the ALREADY WEDGE SHAPED NPT threads to engage too far.

I wish this "industry standard" misinformation would stop being propagated.

Often times with CHEAP poorly cast PVC (LASCO, and other big box store crap) PTFE paste alone is not enough and a wrap or two of tape UNDER the PTFE paste is required to make a water tight seal with minimum engagement (stress).

 

[KrisReef]

Tape is fine, approved (and in many jurisdictions REQUIRED by building code). There is typical boilerplate being copied from one site to the next as PVC do/don't gospel.

Too many wraps it will create a problem, but not so much because it makes the pipe "bigger" it adds a high degree of lubricity and allows the ALREADY WEDGE SHAPED NPT threads to engage too far.

I wish this "industry standard" misinformation would stop being propagated.

Often times with CHEAP poorly cast PVC (LASCO, and other big box store crap) PTFE paste alone is not enough and a wrap or two of tape UNDER the PTFE paste is required to make a water tight seal with minimum engagement (stress).

Yup.
The problem with plumbing is that it is an art to get poorly formed plastic tubes and fittings, and threads to assemble so that they hold water, without excess stress in the fittings to cause a failure later.

I have learned to hate plumbing because of the poor quality of fittings and fixtures that are available.

 

[BeanAnimal]

Yup.
The problem with plumbing is that it is an art to get poorly formed plastic tubes and fittings, and threads to assemble so that they hold water, without excess stress in the fittings to cause a failure later.

I have learned to hate plumbing because of the poor quality of fittings and fixtures that are available.

If you stick with Hayward, Spears, and the like you will not have these problems. The fittings come at a premium, but the tolerances and threads are exponentially more accurate.

 

[ca1ore]

Mostly when something like this says non-potable it’s usually because the manufacturer has not bothered to pay to have it qualified. Same thing with flex PVC. It’s listed as non-potable. It works fine with reef tanks.

 

[JC1977]

For me it comes down to if I’m going to have to remove a threaded fitting or not down the road. As mentioned above I’ve used both and they both work perfectly fine but if I’m using pipe dope I don’t plan on having to ever get that fitting apart because it’s a royal pain in the you know what. Teflon has always worked fine for me over the last 15 years and never had issues with leaking or anything else.

 

[BeanAnimal]

For me it comes down to if I’m going to have to remove a threaded fitting or not down the road. As mentioned above I’ve used both and they both work perfectly fine but if I’m using pipe dope I don’t plan on having to ever get that fitting apart because it’s a royal pain in the you know what. Teflon has always worked fine for me over the last 15 years and never had issues with leaking or anything else.

PTFE paste is non hardening.

Most hardening “pipe dope” type products would not be reef safe anyway.