This Dometic PVC bush fitting is a threaded adapter that reduces water line diameter from 1 inch male pipe thread down to 0.5 inch female pipe thread. It's essential for connecting different sized water supply lines in your RV's fresh water system, commonly used in Dometic water heaters, tanks, and distribution manifolds.
Key Features
- 1" MPT (Male Pipe Thread) inlet connection
- 0.5" FPT (Female Pipe Thread) outlet connection
- Durable PVC construction resists corrosion and chemicals
- Genuine OEM Dometic part ensures perfect fit and compatibility
- Lightweight and easy to install with standard wrenches
- Works with both hot and cold water systems up to typical RV operating pressures
Technical Specifications
| Specification | Details |
|---|---|
| Part Number | 290369727 |
| Inlet Connection | 1" MPT (Male Pipe Thread) |
| Outlet Connection | 0.5" FPT (Female Pipe Thread) |
| Material | PVC |
| Manufacturer | Dometic |
| Type | Bush Fitting / Reducer |
Frequently Asked Questions
Q: What's the difference between MPT and FPT connections?
A: MPT (Male Pipe Thread) screws into a female fitting, while FPT (Female Pipe Thread) receives a male fitting. This bush fitting has a male inlet and female outlet, so you screw it onto a 1" male line and attach a 0.5" male fitting into it.
Q: Can I use this fitting with my water heater bypass valve?
A: Yes, this is a common application. Many Dometic water heater bypass systems use this exact fitting to connect larger supply lines to smaller bypass valves or winterization ports.
Q: Is this fitting compatible with both fresh and greywater systems?
A: This fitting is designed for the fresh water system. It's not recommended for greywater or black water tank applications where chemical compatibility may differ.
Why Choose 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 we sell is genuine OEM Dometic stock, ensuring your RV systems work exactly as designed. Our expert team is ready to help you find the right part and answer technical questions about your specific RV model.
| Brand | Dometic |
|---|---|
| Part number | 290369727 |
| Product type | PVC Bush Fitting |
| Material | PVC |
| Inlet connection | 1" MPT |
| Outlet connection | 0.5" FPT |
| Connection type | Male Pipe Thread x Female Pipe Thread |
| Fitting type | Bushing/Reducer |
| Compatible systems | Dometic water heatersDometic waste systemsDometic fresh water installations |
| Compatible models | Dometic CT series toiletsDometic CTS series toilets |
| Oem part | true |
| New arrival | 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.