In general, small diameter PVC, either clear or reinforced, will withstand sharper bends than larger sizes. Our finding should help you decide how to best route your new hoses as you make any plumbing changes. We carried out the test at room temperature, and then after the hoses had been immersed in hot water. In a comparison of five varieties of tubing in various sizes, we bent 1-foot sections over a measured grid until each hose first flattened discernibly and then kinked, usually suddenly. Kink resistance can be impacted by three factors: (1) the size of the tubing (including wall thickness) (2) the temperature of the water inside (2) the tubing brand. Coast Guard.īut which tubing best withstands the bending needed to lead the water lines through the torturous routes they often must take? The risk is a kink, which severely restricts the flow of water, burdens the water pump and hastens the day when the plastic becomes brittle and cracks. The hoses and coupling methods should follow guidelines set by the EPA, ABYC, and other regulatory agencies, including the U.S. Before beginning any plumbing project, the do-it-yourself should be careful to use the right hose for the job. It is simple to install, and the hose, connecting hardware ( hose clamps) and fittings are readily available. When plumbing a boat’s pressure water system, flexible tubing is inevitably part of the equation.
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