Valterra 4 x 3 Female Threaded Floor Flange Black, 1.80in Depth — Corrosion-Resistant RV/Marine

The Valterra T05-0784 is a heavy-duty 4" x 3" x 1.80" female threaded floor flange in black, designed to create a secure, low-profile connection for RV and marine waste or vent plumbing.

Built in the United States, this Valterra floor flange provides a compact, corrosion-resistant interface when transitioning pipe sizes or fastening plumbing to floors and bulkheads. Its female-threaded design simplifies installation with compatible male-threaded fittings, and its black finish blends discreetly into vehicle and boat interiors. Lightweight yet sturdy, the flange is well suited for confined spaces where a reliable thread-to-thread seal is required.

How does this flange simplify connecting different pipe sizes?

The flange features a 4" outer dimension mating to a 3" female thread and 1.80" depth to accept male fittings, allowing a neat, threaded transition between components. You avoid complex solvent welds or custom adapters when using threaded plumbing parts.

• Female threaded bore sized for compatible 3" male threads
• 1.80" depth for secure engagement of threaded fittings
• Threaded connection enables easier removal and maintenance

What materials and build quality should I expect?

This Valterra flange is manufactured to withstand the vibration and moisture common in RV and marine environments. Its black finish resists visible staining and provides a professional, finished look where the flange is mounted.

• Made in the United States to consistent production standards
• Corrosion-resistant black surface suitable for wet locations
• Lightweight construction for easier handling during installation

How easy is it to install and maintain?

Installation is straightforward when paired with matching male-threaded plumbing parts; the flange mounts to floors or panels and accepts threaded fittings for a tight fit. Routine checks are limited to visual inspections of the thread and surrounding seal to ensure continued performance.

• Mount to flat surfaces using commonly available fasteners
• Threaded coupling removes without cutting or solvent work
• Minimal maintenance — inspect thread and fasteners periodically

Where is this flange typically used and what are the compatibility considerations?

The Valterra T05-0784 is intended for RV, marine, and light industrial plumbing where a compact, threaded floor flange is needed. Confirm thread standard and mating part size before installation to ensure proper fit and sealing method.

• Ideal for RV and boat waste, vent, or service line terminations
• Check thread pitch and diameter against mating male fittings
• Suitable for mounting through floors, bulkheads, and service panels

Who is this for? Installers, RV and boat owners, and maintenance technicians who need a dependable, easy-to-install threaded floor flange will find the Valterra T05-0784 useful. It fits situations where a compact, corrosion-resistant connection is required and where the ability to disassemble threaded plumbing reduces downtime and simplifies repairs.