This Dometic J-Type replacement valve is essential for RV owners maintaining their water systems, refrigeration units, or appliance connections. The 3/8 x 5/16 configuration ensures proper flow control and prevents backflow in critical RV plumbing applications. If your Dometic system is leaking, not holding pressure, or showing signs of valve wear, this genuine OEM replacement restores reliable operation.
- J-Type design for secure connection to Dometic systems
- 3/8 inlet x 5/16 outlet sizing for proper flow compatibility
- Genuine OEM Dometic part ensures exact fit and performance
- Prevents backflow and maintains system pressure integrity
- Durable construction rated for RV water and refrigeration applications
- Direct replacement—no modifications needed
| Specification | Details |
|---|---|
| Part Number | 290339646 |
| Inlet Size | 3/8 inch |
| Outlet Size | 5/16 inch |
| Valve Type | J-Type |
| Manufacturer | Dometic |
| Application | RV Water Systems, Refrigeration, Appliances |
Frequently Asked Questions
Q: How do I know if my valve needs replacement?
A: Signs include water leaks around the valve, loss of system pressure, reduced flow, or visible corrosion. If your RV fridge isn't cooling properly or your water system won't hold pressure, the valve may be faulty.
Q: Will this valve fit my specific RV model?
A: This is a genuine Dometic OEM part (290339646) designed for systems using J-Type valves with 3/8 x 5/16 sizing. Check your system documentation or contact our expert support team to confirm compatibility with your RV.
Q: Is installation difficult?
A: Most RV owners can replace this valve with basic tools. It typically involves shutting off the system, unscrewing the old valve, and threading in the new one. Consult your RV manual for specific instructions, or reach out to our support team for guidance.
Why Elkhart RV Parts?
We specialize in hard-to-find Dometic replacement parts and ship directly from Elkhart, Indiana—the RV capital of the world. Every part is genuine OEM Dometic, backed by expert support to help you get the exact component you need. When you need it right, trust Elkhart RV Parts.
| Brand | Dometic |
|---|---|
| Part number | 290339646 |
| Product type | Replacement Valve |
| Valve type | J-Type |
| Inlet size | 3/8 inch |
| Outlet size | 5/16 inch |
| Application | RV refrigerator, freezer, and water heater systems |
| Part category | OEM Replacement Part |
| New item | true |
| 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.