You know, (PVC) pipe is made from a plastic and vinyl combination material
Normally, PVC piping is most commonly used in water systems, underground wiring, and sewer lines.
Flexible pvc pipe is other kind of PVC but strong and long-lasting and can be used in water systems, for running hookups to washing machines, or in a system for ponds and winter gardens
Flexible PVC can simplify your plumbing as it allows you to bend and curve around pumps, filters and other obstructions.
Flexible PVC retains its large inside diameter and helps to avoid the need of elbows so that water flow is not impeded and this will increase efficiency and reduce the amount the fittings required to help you get the most out of your pump.
Flexible PVC is also resistant to both UV and ozone and can be glued into standard PVC fittings.
Some providers
www.pondparts.com
www.Flexpvc.com
www.Lowes.com
www.BizRate.com
www.plumbingsupply.com
www.plumbingworld.com
www.drsfostersmith.com
Read more about schedule 80 pvc pipe