Valterra 4 x 3 Female Threaded Floor Flange, Black 1.80in Low-Profile Durable

The Valterra T05-0784 is a black 4" x 3" x 1.80" female threaded floor flange designed to create a secure, low-profile threaded connection between pipes and floor or deck surfaces.

This compact floor flange from Valterra provides a durable, threaded interface for 4" to 3" pipe transitions in recreational vehicles, marine applications, and light industrial or residential setups. Machined to accept a female-threaded fitting, the flange's shallow 1.80" depth keeps the installation tidy while offering stable mechanical support for piping runs. Constructed for straightforward mounting, it simplifies joins where a recessed or flush appearance is preferred.

How does this flange fit different pipe sizes and threaded fittings?

The Valterra T05-0784 uses a female-threaded opening sized to accommodate 3" threaded fittings while aligning with a 4" outer flange footprint for mounting. Its design lets you connect threaded pipe or adapters securely and maintain a sealed transition when combined with appropriate gaskets or sealants. The flange bolt pattern and inner thread geometry are optimized for common plumbing accessories used in mobile and stationary installations.

• Female thread accepts standard 3" threaded fittings and adapters.
• 4" outer flange provides a stable mounting surface for screws or bolts.
• 1.80" depth minimizes intrusion into cabinet or compartment spaces.
• Works with sealants, gaskets or thread tape for watertight joins.

What materials and build quality can I expect from Valterra?

Valterra produces components for RV, marine and plumbing markets with emphasis on corrosion resistance and reliable fit. Although the spec sheet lists this item as an auto accessory with U.S. origin, the black finish and molded construction indicate a tough, weatherable material suited for damp environments. Typical Valterra products balance durability with ease of installation so maintenance tasks are simplified.

• Durable black finish resists scuffs and weather exposure.
• Manufactured to Valterra quality controls in the United States.
• Compact, engineered profile for long-term mounting stability.
• Lightweight package suitable for mobile installations.

How do I install and secure the Valterra floor flange?

Installing the T05-0784 is straightforward: position the flange over the prepared hole, align bolt holes with the surface, and fasten using appropriate screws or bolts for the substrate. Use a gasket or silicone sealant under the flange when installing on decks or floors exposed to moisture to prevent leaks. Thread the mating 3" fitting into the female opening and tighten to the manufacturer's torque recommendations.

• Center over a properly sized cutout; mark and drill fastener holes.
• Apply marine-grade sealant or a pre-cut gasket beneath the flange.
• Fasten with stainless screws or bolts into the substrate for corrosion resistance.
• Thread in mating 3" fitting and check for secure, leak-free connection.

What dimensions and packaging information should I check before ordering?

The product measures 4" x 3" x 1.80" overall, and arrives in compact packaging. The item weight and package size make it convenient to store for spares or ship for repairs. Verify hole sizes and mating thread type on your existing plumbing to ensure compatibility prior to purchase.

• Overall dimensions: 4" x 3" x 1.80" (depth).
• Package dimensions: approximately 5.0 cm L x 18.0 cm W x 22.0 cm H.
• Package weight: about 0.46 lbs for easy handling.
• Country of origin: United States—manufactured to industry standards.

Who is this for: The Valterra T05-0784 is aimed at RV owners, boat builders, DIY plumbers and maintenance technicians who need a dependable female-threaded floor flange for compact installations. If you require a low-profile mounting flange for 3" threaded fittings, want a product made to U.S. manufacturing standards, and need an easy-to-install component for wet or mobile environments, this flange is well suited to those needs.