Dometic Check Valve Kit with Corrugated Hose - Toilet Water System - Part# 385311384

DometicSKU: 385311384
Added to catalog: March 10, 2026
Last product update: June 6, 2026 at 2:20 AM

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The Dometic Check Valve Kit with Corrugated Hose (Part# 385311384) is a critical replacement component for Dometic RV toilet water systems. This kit prevents backflow in the water supply line while providing a flexible connection between the water inlet and toilet mechanism. RV owners experiencing water flow issues, leaks at the toilet connection, or needing to replace a damaged corrugated hose will find this genuine Dometic kit restores proper toilet operation.

Key Features

  • Complete Replacement Kit: Includes check valve and corrugated hose for a comprehensive repair solution
  • Backflow Prevention: Check valve ensures water flows in one direction only, preventing contamination of fresh water system
  • Flexible Corrugated Hose: Accommodates installation variations and absorbs vibration during travel
  • Genuine Dometic OEM: Factory-engineered to exact specifications for reliable performance and proper fit
  • Direct Replacement: Designed to replace worn or damaged check valve and hose assemblies in Dometic toilets

Technical Specifications

Part Number 385311384
Kit Contents Check Valve, Corrugated Hose
Application RV Toilet Water Supply System
Function Backflow Prevention & Flexible Connection

Frequently Asked Questions

Q: What symptoms indicate I need to replace this check valve kit?
A: Common signs include water flowing back into the supply line when flushing, reduced water pressure at the toilet, visible cracks or deterioration in the corrugated hose, or leaks at the connection points. If your toilet isn't filling properly or you hear unusual gurgling sounds, this kit may solve the problem.

Q: Is this kit compatible with all Dometic RV toilets?
A: This check valve kit is designed for specific Dometic toilet models. Verify your toilet model number (usually found on a label inside the bowl or on the base) and confirm compatibility before ordering. The corrugated hose design fits standard Dometic water inlet configurations.

Q: How difficult is it to install this check valve kit?
A: Installation is straightforward for most RV owners with basic tools. You'll need to shut off the water supply, disconnect the old hose and valve, install the new components, and test for leaks. The corrugated hose provides flexibility for easier routing and connection. Always refer to your toilet's service manual for specific instructions.

Q: Does the check valve require any maintenance?
A: Check valves are generally maintenance-free but should be inspected periodically for proper operation. If you notice reduced flow or backflow issues developing over time, replacement is recommended. Using potable water and avoiding harsh chemicals helps extend the life of the valve and hose assembly.

Why Choose Elkhart RV Parts?

At ElkhartRVParts.com, we specialize in hard-to-find Dometic replacement parts like this check valve kit. Located in Elkhart, Indiana — the RV Capital of the World — we understand the importance of getting the right part quickly. We stock genuine OEM Dometic components and ship fast so you can get back on the road. Our team of RV parts experts is available to help you identify the exact part you need and answer any technical questions. When you need reliable Dometic parts, trust the specialists at Elkhart RV Parts.

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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