Dometic 1/2 Ton TXV Expansion Valve - AC Refrigerant Control - Part# 9108693276

The Dometic 9108693276 is a 1/2 ton TXV (Thermostatic Expansion Valve) designed to regulate refrigerant flow in Dometic RV air conditioning systems. This critical component controls the amount of refrigerant entering the evaporator coil, ensuring optimal cooling performance and system efficiency. If your RV air conditioner is running but not cooling properly, cycling frequently, or showing signs of refrigerant flow issues, a faulty expansion valve is often the culprit.

Key Features

• Precise Refrigerant Control: TXV design meters refrigerant flow based on evaporator temperature and pressure for consistent cooling
• 1/2 Ton Capacity: Engineered specifically for 1/2 ton (6,000 BTU) Dometic RV air conditioning units
• OEM Replacement Part: Direct factory replacement ensuring proper fit and function in compatible Dometic AC systems
• Durable Construction: Built to withstand the vibration and temperature extremes of RV travel and operation
• Critical AC Component: Essential for maintaining proper superheat and preventing compressor damage from liquid refrigerant

Technical Specifications

Frequently Asked Questions

How do I know if my expansion valve needs replacement?

Common symptoms include inadequate cooling despite the compressor running, frost buildup on the evaporator coil, unusual hissing sounds from the AC unit, or the system short-cycling. If refrigerant levels are correct but cooling is poor, the TXV is a likely suspect.

Can I replace this expansion valve myself?

Replacing a TXV requires recovering refrigerant, brazing or unsoldering connections, and recharging the system with the correct refrigerant amount. This work requires EPA certification and specialized tools. We recommend professional installation by a certified RV HVAC technician.

Will this valve work with R-410A refrigerant systems?

This expansion valve is designed for the specific refrigerant type used in your Dometic system. Verify your AC unit's refrigerant type before ordering. Using the wrong TXV for your refrigerant can cause system damage and poor performance.

What's the difference between a TXV and a fixed orifice?

A TXV actively adjusts refrigerant flow based on temperature and pressure conditions, providing better efficiency across varying loads. Fixed orifices provide constant restriction regardless of conditions. TXV systems generally offer superior performance in RV applications where ambient conditions vary widely.

Why Choose Elkhart RV Parts?

Elkhart RV Parts specializes in hard-to-find Dometic air conditioning components like this 1/2 ton expansion valve. Located in Elkhart, Indiana — the RV capital of the world — we understand the urgency when your AC fails on the road. We stock genuine OEM Dometic parts and ship fast so you can get back to comfortable camping. Our team knows these systems inside and out and can help verify you're ordering the correct part for your specific Dometic AC model.