The Dometic 1-1/2" Swing Check Valve Kit is a critical sanitation system component designed to prevent backflow in RV waste and water lines. This genuine OEM replacement valve ensures one-way flow, protecting your RV's plumbing system from contamination and odors. If you're experiencing backflow issues or need to replace a worn check valve in your Dometic sanitation system, this kit provides the reliable solution you need.
Key Features
- Genuine Dometic OEM Part: Factory-engineered for exact fit and reliable performance in Dometic sanitation systems
- 1-1/2" Connection Size: Standard sizing compatible with most RV waste and water line configurations
- Swing Check Design: Gravity-operated valve mechanism prevents reverse flow while allowing unrestricted forward flow
- Complete Replacement Kit: Includes all necessary components for straightforward installation
- Durable Construction: Built to withstand the harsh conditions of RV sanitation systems
- Prevents Backflow & Odors: Maintains proper flow direction to protect your RV's plumbing integrity
Technical Specifications
| Part Number | 385311926 |
| Connection Size | 1-1/2 inches |
| Valve Type | Swing Check Valve |
| Application | RV Sanitation Systems |
| Kit Contents | Complete valve assembly with installation components |
Frequently Asked Questions
What does a swing check valve do in an RV sanitation system?
A swing check valve allows waste or water to flow in one direction only, preventing backflow into tanks or lines. The swing mechanism opens when fluid flows forward and closes automatically when flow stops or reverses, protecting your system from contamination and preventing odors from traveling back through the plumbing.
How do I know if my check valve needs replacement?
Common signs include backflow of waste or water, persistent odors coming from drains, gurgling sounds in the plumbing system, or visible damage to the valve body. If you notice any of these symptoms, replacing the check valve can restore proper system function and prevent further issues.
Can I install this check valve myself?
Yes, most RV owners with basic plumbing skills can install this valve kit. You'll need to access the existing valve location, disconnect the 1-1/2" connections, remove the old valve, and install the new one following proper flow direction. Ensure all connections are secure and leak-free before returning the system to service.
Is this valve compatible with both black and gray water systems?
This 1-1/2" swing check valve is designed for use in RV sanitation systems and can be used in appropriate applications where this size fitting is specified. Always verify the correct valve size and type for your specific installation location by consulting your RV's plumbing diagram or service manual.
Why Choose Elkhart RV Parts?
At ElkhartRVParts.com, we specialize in hard-to-find Dometic replacement parts that keep your RV systems running smoothly. Located in Elkhart, Indiana — the RV capital of the world — we understand the importance of genuine OEM components for reliable repairs. Our expert team is here to help you identify the right parts and get them shipped fast, so you can get back on the road with confidence.
✓ Genuine Dometic OEM Parts
✓ Fast Shipping from Elkhart, Indiana
✓ Expert Support for Hard-to-Find Parts
| Brand | Dometic |
|---|---|
| Product type | Swing Check Valve Kit |
| Part number | 385311926 |
| Valve size | 1-1/2" |
| Function | Backflow prevention |
| Applications | Freshwater linesWastewater lines |
| Compatible series | Dometic RMDometic NFWDometic RMFT |
| Part category | OEM Replacement Part |
| Installation difficulty | Basic plumbing knowledge required |
| Condition | New |
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.