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A boy outside with a dog. A man is on one knee in the background.

Frequently Asked Questions About PVC Tubing

The difference between ID and OD is determined by the wall thickness. Outside Diameter (OD) measures the distance across the outer, widest part of the tube, crucial for determining fitting connections and clearance. Inside Diameter (ID) measures the inner, hollow space through which fluid or gas flows, determining capacity.
PVC supply lines are generally not built for hot water. Before installing one on a hot water line, check the label for a listed temperature limit.
Start by checking the drain outlet on your dishwasher — most home units use either a ⅝-inch or ⅞-inch opening. From there, make sure the hose is long enough to reach the garbage disposal without pulling tight at either end.

PVC Tubing

PVC tubing is a common building material for water filtration, bathroom repairs, appliance hookups and more. PVC tubing from Tractor Supply's plumbing stock cuts easily, resists corrosion and doesn't require special tools to fit, making it a reliable solution that's built to last and easy to work with.

Flexible Lines for Common Plumbing Work

Where rigid pipe struggles, such as around tight corners and hard-to-reach connections, flexible PVC tubing fills the gap. It bends without cracking, absorbs minor movement and works well in low-pressure setups, including ice makers, filtration systems and refrigerator water lines.

Two measurements define every tubing option: inner diameter (ID) and outer diameter (OD). The ID determines flow capacity, and the OD controls how the tube seats inside a fitting or connector. Both need to match your existing hardware, which is why we offer a wide selection that aligns with your project's needs.

Ready-Made Connection Lines

Connecting a toilet or faucet to the water supply is straightforward when the fittings are already in place. These supply lines come with both ends ready to go, so there's no measuring, cutting or extra hardware involved. FIP (female iron pipe) fittings thread onto standard pipe ends, while compression fittings clamp around the tubing to create a tight seal. Most are 12 in. long, which is the right length for the majority of under-sink and toilet tank installations.

Discharge Hoses for Dishwashers

The drain hose on a dishwasher handles hot, pressurized water with every cycle, and it needs to be built for that. Discharge hoses are sized for standard drain outlets with an inner diameter of 5/8 in. or 7/8 in. Black construction holds up better to heat than standard flexible hose. With options around 10 ft. long, there's enough length to route cleanly under the counter and connect to your disposal without pulling tight.

Discover PVC Tubing from Tractor Supply

A well-fitted connection lasts longer and leaks less — and PVC tubing makes that easier to achieve. Matching the correct ID, OD and length to the job protects against slow leaks in hard-to-spot, hard-to-reach areas. Find the right PVC tubing for your job site or browse other tubing and hoses options on our website or at your local Tractor Supply store.