Dometic Outlet Flange Kit 1-1/2" Female NPT - Part# 4471003778

DometicSKU: 4471003778
Added to catalog: March 11, 2026
Last product update: June 14, 2026 at 8:13 PM

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The Dometic Outlet Flange Kit with 1-1/2" Female NPT connection is an essential plumbing component for RV fresh water and waste water systems. This flange kit provides a secure, leak-free connection point for tank outlets, making it ideal for replacing worn or damaged fittings on Dometic water tanks and holding tanks.

  • 1-1/2" Female NPT threaded connection for standard RV plumbing compatibility
  • Durable flange design prevents leaks and ensures watertight seal
  • OEM Dometic part—guaranteed fit for compatible models
  • Easy installation with standard plumbing tools
  • Suitable for both fresh water and waste water applications
  • Corrosion-resistant materials built to withstand RV environments
Specification Detail
Part Number 4471003778
Thread Type Female NPT
Thread Size 1-1/2"
Connection Type Outlet Flange
Manufacturer Dometic
Application Fresh Water & Waste Water Tanks

Frequently Asked Questions

Q: Will this flange kit fit my Dometic tank?
A: This 1-1/2" Female NPT outlet flange is designed for Dometic tanks with matching connections. Verify your tank's outlet size and thread type before ordering. Our expert team can help identify compatibility.

Q: Can I use this for both fresh water and gray water systems?
A: Yes, this flange kit is suitable for fresh water, gray water, and black water applications. The durable construction handles all standard RV tank types.

Q: How do I install this outlet flange?
A: Remove the old flange from your tank outlet, clean the connection area, apply plumber's thread seal tape to the NPT threads, and screw the new flange in securely. Use a wrench to tighten without over-torquing.

Why Elkhart RV Parts

We specialize in hard-to-find Dometic RV replacement parts and ship directly from Elkhart, Indiana—the RV capital of the world. Every part is genuine OEM Dometic equipment backed by expert support to ensure you get the exact component your RV needs.

100% Authentic OEM Parts

Factory-Fresh OEM Parts — the same brands installed in new RVs straight from Elkhart. Genuine, name-brand components made to order — never generic, never outdated. Sourced directly from the original RV manufacturers for perfect fit and factory-level quality.

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