PVC Marine/RV Drain Hose
Sizes 20 mm to 50 mmBoat sink and shower drainsBilge pump dischargeCaravan grey water tanksDeck and cockpit drainsRV washing machine outlets
About PVC Marine/RV Drain Hose
Marine and RV drain hose runs the grey water lines that every boat and caravan needs and nobody sees: sink and shower wastes, bilge pump discharge and tank drains. This flexible PVC hose bends around bulkheads and through chassis rails without kinking, and the smooth bore keeps soap scum and food scraps moving. Hose Suppliers Australia stocks it in Brisbane in six sizes.
Types of marine and RV drain hose we stock
- 20 mm, 25 mm and 28 mm: galley and basin wastes, caravan sink drains and small pump outlets, in 2 m to 15 m cut lengths or a 20 m coil.
- 32 mm and 38 mm: shower drains, bilge pump discharge and grey water tank outlets.
- 50 mm: cockpit and deck drains and larger tank lines.
For pumped grey water on caravans see purple sullage hose; for toilet lines see white marine sanitation hose; and for the pumps themselves see bilge pumps.
Choosing the right drain hose
- Size: match the hose inside diameter to the spigot on the waste, pump or skin fitting so it pushes on and clamps tight.
- Routing: keep bilge discharge lines rising to the outlet with no low loops that hold water.
- Fluid: this hose is for grey water and bilge water, not fuel or sewage.
- Fittings: use skin fittings at the hull, stainless hose clamps at every joint, and nylon joiners and elbows to change size or direction.
Need help sizing a drain run? Call the Brisbane team on (07) 3890 3359 or contact us. Boat builders and caravan repairers can apply for a trade account. The full range is under PVC hoses.