Dometic Replacement Valve Base 3/8" Female x 3/8" Sweat - Part# 290330416

DometicSKU: 290330416
Added to catalog: March 10, 2026
Last product update: June 6, 2026 at 12:10 PM

Sale price$252.06 Regular price$400.78
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This Dometic replacement valve base is a critical plumbing component for RV water systems, refrigeration lines, and propane applications. The 3/8" female inlet and 3/8" sweat outlet connection make it compatible with standard RV plumbing and HVAC installations. If your Dometic water heater, refrigerator, or climate control system has a leaking or damaged valve base, this OEM replacement restores proper system function and prevents water or refrigerant loss.

Key Features

  • 3/8" female NPT inlet connection for easy installation
  • 3/8" sweat outlet for soldered or brazed connections
  • Genuine OEM Dometic part ensures compatibility and reliability
  • Durable brass or copper construction resists corrosion in RV environments
  • Direct replacement for original equipment on Dometic appliances
  • Compact design fits tight spaces in RV cabinetry and compartments

Technical Specifications

Specification Details
Part Number 290330416
Inlet Connection 3/8" Female NPT
Outlet Connection 3/8" Sweat (Solder/Braze)
Material Brass or Copper
Manufacturer Dometic

Frequently Asked Questions

What systems use this valve base?
Dometic valve bases are used in water heaters, refrigerators, air conditioning units, and propane heating systems. Check your appliance manual or contact our support team to confirm compatibility with your specific model.

Can I solder this valve base myself?
Yes, the 3/8" sweat outlet is designed for soldering or brazing. If you're not experienced with soldering copper fittings, we recommend having a qualified RV technician perform the installation to ensure a leak-free connection.

How do I know if my valve base needs replacement?
Signs include visible leaks around the valve base, water pooling under your appliance, loss of refrigerant in cooling systems, or reduced water pressure. If you notice any of these issues, replacement is typically necessary.

Why 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. Our team understands RV systems and is ready to answer your technical questions.

100% Authentic OEM Parts

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.

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