W01-1400 — Clear vinyl tubing
A 100-foot roll of clear vinyl tubing for a compatible RV freshwater connection. Its smaller 3/8-inch inside diameter requires a matching fitting; do not choose it on the outside measurement alone.
View W01-1400Valterra RV Fresh-Water Tubing: W01-1400, W01-1600 & W01-1800
Flexible freshwater tubing is usually selected by the inside diameter (ID) needed at the connection—not by the outside diameter (OD) printed in a product title. Valterra's W01-1400, W01-1600 and W01-1800 are three distinct rolls with different dimensions, lengths and construction. Use the comparison below to identify the replacement line without confusing plain vinyl tubing with the reinforced version.
Compare Valterra freshwater tubing sizes
| Part number | Inside diameter | Outside diameter | Roll length | Construction |
|---|---|---|---|---|
| W01-1400 | 3/8 in | 1/2 in | 100 ft | Flexible clear vinyl |
| W01-1600 | 1/2 in | 5/8 in | 100 ft | Flexible clear vinyl |
| W01-1800 | 1/2 in | 5/8 in | 50 ft | Reinforced PVC |
How to understand ID, OD and wall thickness
Inside diameter (ID): The open passage inside the tube. This is the measurement to compare with a properly matched hose-barb fitting.
Outside diameter (OD): The full width measured across the outside of the tube. This matters for routing, supports and fittings that grip the outside wall.
Wall thickness: All three listed models have a nominal 1/16-inch wall based on the manufacturer ID and OD measurements. That does not mean the tubing types have identical strength or pressure ratings; W01-1800 has a separate reinforced construction.
Compare the exact products
W01-1600 — Clear vinyl tubing
A 100-foot roll of clear vinyl tubing with a larger 1/2-inch bore and 5/8-inch outside diameter. Select the hose-barb or other connection by its required inside diameter and check the installed line before cutting.
View W01-1600W01-1800 — Reinforced PVC tubing
A 50-foot roll of reinforced PVC freshwater tubing. It shares the 1/2-inch inside and 5/8-inch outside diameters of W01-1600 but differs in construction and roll length. Verify the installation's pressure and temperature requirements separately.
View W01-1800Plain vinyl versus reinforced PVC
W01-1400 and W01-1600 are flexible clear vinyl rolls suitable for compatible RV freshwater tubing applications. They have different bores: 3/8 inch for W01-1400 and 1/2 inch for W01-1600.
W01-1800 is a reinforced PVC hose with the same nominal 1/2-inch ID and 5/8-inch OD as W01-1600, but it is not merely a 50-foot cut of the 100-foot plain vinyl roll. Confirm the pressure, water temperature, fitting style and manufacturer's intended use of the existing line before choosing a replacement. Do not assume these rolls are direct substitutes for a pressure-rated water-pump outlet hose.
Typical freshwater tubing connection points
This is a general parts-identification reference, not a plumbing diagram for a specific RV. The correct tubing depends on the fixture and the type of connection already installed.
Water supply or tank fitting
Identify the original connection and the permitted line type.
Matching tubing ID
Measure the bore needed for the intended compatible connector.
Secure connection
Use the appropriate connector and clamp or retention method.
Fixture or water-line branch
Check line pressure, temperature and the required service conditions.
Before ordering or cutting
- Read the old tube markings. Look for its material, inside and outside diameters, and any printed service rating.
- Measure both diameters. A 5/8-inch OD line can have a 1/2-inch ID; selecting only by outside measurement can result in the wrong hose connection.
- Match the construction. Replace reinforced tubing with a suitable reinforced hose where the installation requires it; do not assume clear plain vinyl has the same pressure capability.
- Check the water service. Confirm the line's pressure and temperature conditions. The material and diameter alone do not establish safe operating limits.
- Measure the route before cutting. Leave enough length for supported bends, movement and service access, without kinking the line.
- Test completed connections. Use the correct fittings and attachment method; inspect for leaks before closing access panels.
Related freshwater reference guides
For water supply components rather than bulk internal tubing, see our Valterra drinking-water hose comparison. Our HydroMAX water-pump parts guide explains pump connection accessories. For separate low-pressure tank fittings, see the Valterra ABS freshwater tank and RK907 reference.
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