The Valterra 3" OD Spigot Flange steps in when you need a straight 3 inch outlet from a tank to your RV black water line. The 110 mm x 110 mm base gives you a solid footprint on a flat tank wall so the pipe sits true instead of twisting under load. The 76 mm internal bore keeps waste moving cleanly to your downstream valves and hose.

This bit of gear is black plastic with a smooth finish through the full 76 mm diameter so there are fewer spots for grime to hang up. The square base and four fastener points spread the load across that 110 mm face which helps when the van is bouncing over corrugations. If you want a smart buy for standard RV waste layouts this simple flange does the job without fuss.

• Valterra 3" OD spigot flange for caravan and RV plumbing
• Suits standard 3 inch black water pipework
• Approximate 76 mm internal bore for consistent flow
• Square 110 mm x 110 mm base for stable tank mounting
• Moulded from black plastic for waste system use
• Smooth internal finish to help reduce buildup
• Four mounting holes for secure fastening to flat surfaces
• One-piece fitting keeps alignment simple during installation
• Compatible with typical RV black water valves and hoses
• Compact flange suited to tight tank outlet spaces

Q: Is this flange suitable for fresh water systems?

This flange is supplied as a black water fitting. It is listed in the plumbing range for black water waste systems on caravans and RVs. The material and sizing match common sewer and waste hose layouts. For fresh water tanks most setups use specific potable fittings instead of this style. Match the flange to the type of liquid and pressure your system runs.

Q: Does the flange include mounting hardware or seals?

No mounting hardware or seals are included. The kit here is the flange body only so you can choose bolts and gaskets that suit your tank wall thickness and material. Many installers use stainless fixings with a suitable gasket or sealant. Always check local plumbing guidelines before final assembly. Replace any old hardware that shows corrosion.

Q: Can this be fitted in any orientation on the tank wall?

Yes the square base allows any rotation during install. The 110 mm x 110 mm flange pattern is symmetrical so you can rotate it to line up with existing holes or pipe runs. Just make sure the sealing surface on the tank is flat and clean. Tighten each fastener evenly so the plastic flange seats correctly. Avoid overtightening to prevent distortion of the base.

Q: What pipe or hose size does the 3" OD spigot suit?

The 3 inch outside diameter suits gear built around standard 3 inch waste components. Most caravan and RV black water pipes and gate valves are based on this 3 inch size. The spigot provides a straight section that can be glued or clamped depending on your chosen fittings. Always confirm your existing pipe or valve is labelled for 3 inch connections. If the size does not match this flange will not seal correctly.