This Dometic PVC bush fitting is a reducer connector that joins two different-sized plumbing lines in your RV's fresh water, gray water, or black water system. The 0.5" male pipe thread (MPT) inlet connects to larger diameter tubing, while the 0.25" female pipe thread (FPT) outlet steps down to smaller lines. Essential for custom plumbing repairs, system modifications, or replacing damaged fittings in Dometic water systems.
Key Features
- Reduces 0.5" MPT inlet to 0.25" FPT outlet for flexible plumbing configurations
- Durable PVC construction resists corrosion and chemical degradation
- Male-to-female threaded design allows secure connections without additional adapters
- Compatible with fresh water, gray water, and black water system applications
- OEM Dometic part ensures proper fit and reliability in your RV plumbing
Technical Specifications
| Specification | Details |
|---|---|
| Inlet Size | 0.5" MPT (Male Pipe Thread) |
| Outlet Size | 0.25" FPT (Female Pipe Thread) |
| Material | PVC |
| Part Number | 290335360 |
| Fitting Type | Bush Reducer |
Frequently Asked Questions
Q: Will this fitting work with my Dometic water heater or tank system?
A: Yes, this PVC bush fitting is compatible with Dometic fresh water, gray water, and black water systems. It's commonly used in plumbing connections throughout these systems. Verify your current line sizes (0.5" and 0.25") match before ordering.
Q: Can I use this fitting for both incoming and outgoing water lines?
A: Absolutely. This reducer works in any orientation within your RV's plumbing system—fresh water supply lines, gray water drain lines, or black water tank connections. The PVC material handles all three applications.
Q: Do I need thread sealant tape or plumber's putty with this fitting?
A: Yes, we recommend wrapping the male threads (0.5" MPT side) with PTFE thread seal tape before installation to ensure a watertight connection and prevent leaks.
Why Elkhart RV Parts
We specialize in hard-to-find Dometic replacement parts for RV owners who need exact OEM components. Shipping directly from Elkhart, Indiana—the RV capital of the world—we stock genuine Dometic parts with expert support to help you identify and install the right component for your system.
| Brand | Dometic |
|---|---|
| Product_type | PVC Bush Fitting Reducer |
| Part_number | 290335360 |
| Inlet_size | 0.5 inch |
| Inlet_thread_type | MPT |
| Outlet_size | 0.25 inch |
| Outlet_thread_type | FPT |
| Material | PVC |
| Compatible_systems | RV water systemsRV waste systemsLP gas lines |
| Compatible_appliances | Dometic ToiletsDometic Water HeatersDometic Refrigerators with ice makersDometic Sinks and fixtures |
| Product_category | RV Plumbing Parts |
| Product_subcategory | Fittings and Connectors |
| 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.