The Dometic water heater mixing valve (Part# 90029) is a critical component that regulates water temperature in your RV's hot water system. This valve prevents scalding by blending hot and cold water, ensuring safe and comfortable water temperatures throughout your rig. If your Dometic DSM or SV series water heater isn't maintaining proper temperature or you're experiencing inconsistent hot water, this OEM replacement valve restores proper operation.
- Genuine Dometic OEM part for DSM and SV series water heaters
- Thermostatic mixing valve design maintains consistent water temperature
- Prevents scalding by automatically balancing hot and cold water
- Direct replacement—no modifications required
- Durable construction rated for RV water system pressures
- Easy installation for DIY or professional service
| Specification | Details |
|---|---|
| Part Number | 90029 |
| Compatibility | Dometic DSM and SV Series Water Heaters |
| Type | Thermostatic Mixing Valve |
| Function | Temperature regulation and scalding prevention |
| Installation | Direct OEM replacement |
Frequently Asked Questions
Q: How do I know if my mixing valve needs replacement?
A: Common signs include water temperature that won't stabilize, inconsistent hot water output, or the valve leaking. If your Dometic DSM/SV heater isn't maintaining temperature properly, the mixing valve is often the culprit.
Q: Will this valve fit my specific Dometic model?
A: This part is designed for Dometic DSM and SV series water heaters. Check your water heater's model number (typically found on the front panel or in your owner's manual) to confirm compatibility before ordering.
Q: Is professional installation required?
A: While many RV owners successfully install this valve themselves using basic tools, some prefer professional service. The valve connects to your water system's hot and cold lines, so ensure proper connections to prevent leaks.
Why Elkhart RV Parts
Elkhart RV Parts specializes in hard-to-find Dometic replacement components like this mixing valve. We ship from Elkhart, Indiana—the RV capital of the world—and stock genuine OEM parts with expert support to help you get your water heater working perfectly again.
| Brand | Dometic |
|---|---|
| Product type | Water Heater Mixing Valve |
| Part number | 90029 |
| Compatible series | DSM/SV Series |
| Compatible models | DSM6, DSM10 |
| Function | Temperature regulation |
| Installation type | Direct replacement |
| Modifications required | No |
| Part category | Service Part |
| Oem | true |
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.