Let’s get started with the topic Can I Use Gray PVC Cement On White PVC? Gray (electrical) PVC is not pressure rated, whereas white (water) PVC is. White PVC is softer than gray PVC, making it easier to bend.
Gray employs a single-step transparent PVC cement that won’t leave blue or red stains because it’s open. (Note that clear cement can be used on white for non-pressure applications.)
Can I Use Gray PVC Cement On White PVC?
Certainly! The chemistry is slightly different, but it was still Polyvinyl Chloride. The glue welds the components together, so if the color doesn’t matter, you can mix and match whatever you want (even the fittings), and the updating is 100% equal.
How Can I Unglue A PVC Pipe?
Yes, a PVC pipe and fitting can be “unglued,” especially if it has only been a few minutes. Everyone else in the room has not done it. I work with up to 15 inches in diameter PVC on major undergrounds.
While you can’t unglue pipe that huge, you can separate smaller pipe from fittings, but it takes practice and patience, and you’ll inevitably destroy the pipe, which means you’ll have to re-attach the system with a coupling and more piping.
First, cut the pipe flush with the cup of the fitting, then use a Sawzall to gently score a line on the remaining pipe inside the fitting at a 90-degree angle to the cup. Cutting into the fitting is not recommended.
Start hammering near the cut between the pipe and the cup with a couple of flat head screwdrivers, and when it pops loose, leave the first screwdriver in place and enter the second one farther down where it’s still attached. Then play leapfrog with the first screwdriver. Continue in a circular motion until the old pipe is free of the fitting.
This does not always work, and when the temperature is cold, the fitting will most certainly snap, but it’s worth a try. We also use “ram-bits” to remove the pipe from the insides of fittings; all you need is a drill to use them.
Does An Electrical PVC Conduit Need To Be Glued?
All conduit connections must be “made up tight,” which in the case of PVC conduit means bonded, according to the National Electrical Code.
When bonding electrical conduit, only apply glue to the male end so that when the ends are forced together, the extra glue is pushed out rather than fouling the interior channel, which must stay smooth to avoid injuring the wire that will be drawn in.
Pro tip: While it may not be Kosher, PVC conduit may be built and glued with a pull string attached as the interconnections are assembled. Allowing the glue to squeeze out inside will glue the string in place and make pulling wire or adding fish tape later very difficult. (Inquire as to how I know this.) This was done as a “favor” for me by a general contractor. Ugh!
I’ve never discovered a buried glued PVC conduit that wasn’t brimming with water. The wires that are installed are usually watertight. You’re not attempting to build a watertight road; rather, you’re attempting to build a structurally sound one.
I would never rely on only one PVC surface to keep water, air, or other substances from leaking. However, for electrical issues, see the preceding suggestions. As a result, an electrical PVC conduit must be bonded.
Can You Run An Electrical Wire Through A PVC Pipe?
You can’t code, but you can do it in practice. PVC electrical conduit is a conduit, while PVC pipe is a pipe. Straight portions of pipe/conduits are occasionally replaced for one another, especially for underground use where the markings on the flank of the pipe/conduit cannot be checked.
Using plumbing fittings for the electrical conduit isn’t a good idea (legally and practically). Plumbing fittings have a very tight radius of 90, whereas electrical conduit fittings have a big radius, allowing wires to be dragged through.
Conduit lengths are also bell-end, so you may avoid sharp edges inside the conduit and stripping the insulation from the wires (assuming you place them in the direction you’ll draw the wire). With PVC pipe, which is mostly not bell-end, you can’t avoid it.
What Is The Difference Between White PVC And Grey PVC?
I began working in the swimming pool industry around 50 years ago when PVC pipe began to replace copper tubing. Sch. 40 PVC was gray back then. It was more brittle back then. In the 1970s, pipe makers refined the recipe by adding additional UV inhibitors and some Sch. 40 was white, while others were a cream tint.
Sch. 40 PVC is now completely white. The Sch.80 pipe is a medium gray color. Medium gray is also the color of an electrical conduit. So, just because you come across some gray PVC that was placed long ago, don’t assume it’s Sch. 80; it could be ancient Sch. 40 or an electric conduit.
The color of Sch. 80 PVC is dark gray. For any given diameter of PVC pipe, it passes a higher pressure requirement and has a thicker wall than Sch. 40. For smaller sizes typical of domestic plumbing, Sch 40 CPVC pipe with a light tan hue will withstand greater temperatures.
For the pool trade, you can buy CPVC in Sch. 80 in 1–1/2′′ and 2′′ diameters, which is a lighter gray than Sch. 80 PVC. Confused? Read the writing on the pipe’s side. The Schedule is molded into the plastic on fittings.
Will A PVC Pipe Stay Together Without Glue?
Always use primer and solvent cement adhesive if you don’t want it to leak under pressure. However, my cousin’s ex-husband made the mistake of putting together 1000 feet of 2′′ PVC as water service for their home using primer, which lasted nearly 20 years.
When it broke, I did some math and discovered that only a 1′′ water service was needed. Instead of digging it all up since so many trees had grown up, we could push and pull 1000 feet of 1′′ poly pipe through the substandard PVC, only digging it up in four places, but it took four guys ten arduous hours. Always do things correctly first, and use primer and solvent cement glue.
Is There Any Problem With Using A Regular PVC Pipe For An Electrical Conduit?
Yes, using PVC plumbing tubing as an electrical conduit has several drawbacks. To begin with, PVC plumbing pipe is not UV resistant. However, PVC conduit is. When exposed to sunshine, PVC plumbing will decay and eventually fail, whereas PVC conduit will not.
The gray hue of PVC conduit warns emergency responders, such as firefighters, that it includes live electrical cabling and that cutting into it is risky. For firefighters, live electrical wires in PVC water pipes are a death trap.
Finally, running electrical wiring via PVC water pipe is an electrical code violation that could result in a large red ticket from the building inspector, forcing you to abandon the premises until everything is rewired with a suitable conduit.
Is it possible to accomplish it without being exposed to sunlight? Sure. Will it be safe under those circumstances? Probably. Isn’t it better to have a conduit than none at all?
No. If you did this, your insurance company would completely agree with me, and you can anticipate any homeowners insurance claims to be denied as well as wrongful death or injury complaints if an emergency responder is injured or killed because they thought it was a water line.
PVC electrical conduit is also less expensive per foot than a PVC water pipe because water pipe must be pressure rated to hold residential water pressure from your faucets, whereas conduit does not.
Conclusion of Can I Use Gray PVC Cement On White PVC? Is here. The pressure resistance of gray (Electrical) PVC is not rated, whereas white (Water) PVC is. Compared to its grey counterpart, white PVC is more malleable because of its softer nature.
Given its lengthy lifespan in the public eye, Gray uses a one-step clear PVC cement that does not discolor in either blue or red. Remember that you can use white with clear cement for non-pressure installations.
Frequently Asked Questions
Is it possible to use PVC to run electrical wires?
Is using white PVC pipe as an electrical conduit permissible?
What sort of adhesive works well with PVC?
Is grey PVC required to be primed?
PVC cement in the other class, such as Hot Medium Blue Lava PVC glue and Rain-R-Shine® Medium Blue PVC cement, does not require the use of a primer.