The Dometic Replacement Expansion Valve (Part# 290000141) is a critical air conditioning component that regulates refrigerant flow through your RV's cooling system. If your Dometic rooftop or under-bed AC unit is running inefficiently, not cooling properly, or cycling on and off frequently, a faulty expansion valve is often the culprit. This OEM replacement valve restores proper refrigerant metering and system performance.
Key Features
- Genuine OEM Dometic part designed for 5-6 ton AC systems
- R410A refrigerant compatible expansion valve
- Direct replacement—no modifications required
- Restores proper refrigerant flow and cooling efficiency
- Prevents compressor damage from improper refrigerant metering
- Tested and validated for Dometic rooftop and under-bed units
Technical Specifications
| Specification | Details |
|---|---|
| Part Number | 290000141 |
| Refrigerant Type | R410A |
| Capacity Range | 5-6 Ton |
| Component Type | Thermostatic Expansion Valve |
| OEM Status | Genuine Dometic Replacement |
Frequently Asked Questions
Q: How do I know if my expansion valve needs replacement?
A: Common signs include reduced cooling capacity, AC unit cycling on and off rapidly, uneven cooling in different RV areas, or the compressor running continuously without reaching set temperature. A qualified technician can confirm with system pressure diagnostics.
Q: Is this valve compatible with my Dometic AC unit?
A: This valve is designed for Dometic 5-6 ton R410A systems. Verify your unit's capacity and refrigerant type before ordering. If unsure, contact our expert support team with your RV model and AC specifications.
Q: Do I need special tools to install this valve?
A: Expansion valve replacement requires HVAC-certified technician skills, proper refrigerant recovery equipment, and system evacuation/recharge capability. We recommend professional installation to ensure system integrity and warranty compliance.
Why Choose Elkhart RV Parts
We specialize in hard-to-find Dometic replacement parts for RV owners who demand OEM quality and reliability. Shipping directly from Elkhart, Indiana—the RV capital of the world—we stock genuine Dometic components and provide expert support to help you identify the exact part your RV needs. When your air conditioning system fails on the road, you need parts you can trust.
| Brand | Dometic |
|---|---|
| Product type | Expansion Valve |
| Refrigerant type | R410A |
| Cooling capacity | 5-6 Ton |
| Part number | 290000141 |
| Oem | true |
| Included components | Cap tube, Flare nut |
| Category | Air Conditioning |
| Product status | New Arrival |
| Part classification | Service/Replacement Part |
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.