The Dometic refrigerant valve base is a critical connection component for RV air conditioning and refrigeration systems. This 5/8" x 3/4" MFL (Male Flare Fitting) valve base serves as the mounting point and flow control interface for refrigerant lines in Dometic cooling appliances. If your RV's AC or fridge is losing cooling capacity or showing refrigerant leaks at connection points, this valve base may need replacement.
Key Features
- 5/8" x 3/4" male flare fitting (MFL) connection sizes
- Engineered for Dometic air conditioning and refrigeration systems
- Durable brass or aluminum construction for reliable performance
- Direct OEM replacement — exact fit for your RV cooling system
- Prevents refrigerant leaks at valve connection points
- Compatible with standard R-134a refrigerant systems
Technical Specifications
| Specification | Details |
|---|---|
| Part Number | 290000140 |
| Connection Size (Primary) | 5/8" MFL |
| Connection Size (Secondary) | 3/4" MFL |
| Fitting Type | Male Flare (MFL) |
| Application | Dometic RV AC and Refrigeration Systems |
Frequently Asked Questions
Q: How do I know if my valve base needs replacement?
A: Signs include visible refrigerant oil leaks around the valve connection, reduced cooling performance, or hissing sounds near the AC/fridge unit. If you notice these symptoms, inspect the valve base connection for corrosion or damage.
Q: Will this valve base fit my specific RV model?
A: This is a genuine Dometic OEM part designed for Dometic cooling systems. To confirm compatibility, check your RV's AC or refrigerator manual for the part number, or contact our support team with your appliance model and year.
Q: Do I need special tools to install this valve base?
A: Installation requires basic flare wrench tools and knowledge of refrigerant system work. We recommend having a certified RV technician handle refrigerant system repairs to ensure proper evacuation, installation, and recharging of your cooling system.
Why Choose Elkhart RV Parts
We specialize in hard-to-find Dometic replacement parts for RV owners who demand genuine OEM quality. Shipping directly from Elkhart, Indiana — the RV capital of the world — we stock the exact components you need to keep your RV's cooling systems running reliably. Our expert support team is ready to help you identify the right part and answer technical questions about your Dometic appliances.
| Brand | Dometic |
|---|---|
| Part_number | 290000140 |
| Product_type | Refrigerant Valve Base |
| Connection_size_1 | 5/8" MFL |
| Connection_size_2 | 3/4" MFL |
| Connection_type | Male Flare (MFL) |
| Compatible_series | PenguinHarrier |
| Compatible_system | Rooftop AC Units |
| Part_category | Service Part |
| Part_condition | New |
| Oem_part | true |
| Function | Refrigerant connection valve base |
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.