This Dometic straight valve is a critical plumbing component for RV water systems. The 1/2" x 3/8" configuration connects supply lines and controls water flow to appliances, faucets, and fixtures throughout your motorhome or travel trailer. If you're experiencing leaks, reduced water pressure, or need to replace a worn valve, this OEM Dometic part ensures proper fit and reliable performance.
Key Features
- Straight valve design for direct line connections
- 1/2" inlet x 3/8" outlet port sizes
- OEM Dometic replacement part — exact factory specifications
- Durable construction for RV freshwater and gray water systems
- Easy installation with standard plumbing connections
- Compatible with most Dometic water system configurations
Technical Specifications
| Part Number | 290339641 |
| Inlet Port Size | 1/2" |
| Outlet Port Size | 3/8" |
| Valve Type | Straight |
| Manufacturer | Dometic |
Frequently Asked Questions
Q: How do I know if this is the right valve for my RV?
A: Check your existing valve's port sizes — this part fits 1/2" inlet and 3/8" outlet connections. If your current valve matches these dimensions and you have a Dometic water system, this is your replacement. Consult your RV manual or contact our support team if you're unsure.
Q: Can I install this valve myself?
A: Yes, if you have basic plumbing experience. Turn off your water supply, use a wrench to disconnect the old valve, and thread this new one into place using plumber's tape on the threads. If you're uncomfortable working with water systems, have a professional RV technician handle the installation.
Q: Will this valve work with my gray water system?
A: This Dometic valve is designed for RV freshwater systems. For gray water applications, verify compatibility with your specific system configuration or contact our support team for guidance.
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 we sell is genuine OEM Dometic equipment backed by expert customer support. When you need the exact valve your RV was built with, trust Elkhart RV Parts for fast shipping and reliable service.
| Brand | Dometic |
|---|---|
| Part number | 290339641 |
| Product type | Replacement Straight Valve |
| Inlet size | 1/2" |
| Outlet size | 3/8" |
| Configuration | RVS |
| Connection type | Standard Plumbing |
| Application | RV Refrigeration, HVAC, Plumbing Systems |
| Compatible series | RMRMSNDR |
| Part category | OEM Replacement Part |
| Features | Leak-free seal for reliable flow control |
| 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.