PVC Pipe Weakening Due to Grooves On It

Maybe a beveled edge with a beveled washer? Since I'm not a paid consultant on this project you can ignore my suggestion or use it at your own risk.

Make the pipe ID smaller.

But make sure to have the OD larger than the ID or the hole is outside from the pipe . . .

But you can get much greater flow that way!

No. grooves.

Three wraps of teflon pipe tape.

Next question.

You need to find an answer that doesn't have grooves. They are a stress concentrator so that all movement, bending and such are focussed into the 5mm width AND the reduced wall thickness.

You MIGHT get some improvement (not solution) with a shallower groove and a thinner sealing ring.

Note also, if you are using this as bore pipe, then the combined mass of all pipes below need to be included in your calculations.

As others have indicated: Just seal the joint in the threaded area.

Can you post a drawing or sketch? I am having difficulty visualizing how a flat gasket fits into a groove. What is this pipe being used for?

Weld pvc flanges at either end and use gasket to stop leak via flange.

Or else suspend the pump by a pvc coated steel rope so that weight of the pipe won't be borne by pipes.

As bigg said, why don't you post a drawing or sketch? It should be easier for you since you are a BE. Mech.

I suggest you should increase diameter at both ends and provide "U" grooves for providing rubber rings for avoiding leakages. Alternatively you can paste the sleeves at both ends and fix them with strong adhesive on the both end of pipe.

-The best solution (for my opinion),is to remove totally the groove,and use compression

rings squeezed by threading adaptor,it used quite successfully for water pipes and no need for high squeezing (if pressures are below 20 atmospheres)

If understood correctly this is used as the pipe in a borewell and you may not have space for a flange.

PVC may not be the best material for the duty.

If you need to sell the pipes at all costs using solvent joints and a cable or two to carry the load must be considered .

As other here have commented on that we glue PVC pipe. Other then when necessary we use adapter to a pipe thread.

If you are threading PVC pipe then you would have to increase the wall thickness. As the threads and the expansion of the female tool joint would reduce it. Going to a glue joint would allow you to reduce this wall thickness. Saving in material.

If you still wish to screw it together. PVC is a soft material the thread should seal with out a rubber sealing ring.

Insufficient information about your particular application to provide an astute response, however, some of the other respondents have offered valid suggestions. I also question the usefulness of a groove/rubber ring seal, when standard tapered pipe threads with sealant will work fine (sealant can be food grade teflon paste, or teflon tape I suppose). Rather than using glue (if this is a potable water supply), try PVC pipe welding with hot air. By the way, hope you are not using machine (non-tapered) threads, since those will not seal. If using machine threads, the flat rubber gasket should be seated in the coupling and on the flat end of the pipe.

Are you matching your product pipe thickness schedule to the pipe schedule of the competitor? If you are using "40 sch", while they are using "80 sch" pipe, you will lose out due to pipe failures.

Why is PVC even needed in such an application? Perhaps steel would be better.