Boltigen RV City Water Fill Inlet — Lead-Free Brass Check Valve, 3/4" NH to 1/2" NPT, Flush 3" White Flange with Dust Plug

Boltigen's RV city water fill inlet is a lead-free brass check valve and hose connector that converts a 3/4" NH (GHT) female inlet to a 1/2" NPT male, preventing backflow and protecting your RV fresh water system.

Whether you’re hooking up at a campground or leaving your trailer in storage, this compact, flush-mount inlet provides a dependable city water connection and a dust-covered port. Constructed from lead-free brass with a sturdy white plastic 3" flange and a flexible rubber dust plug, the assembly is built for repeated use and resists corrosion from outdoor exposure.

How does this inlet connector stop contaminants from entering my RV water lines?

The built-in check valve prevents backflow by allowing water to flow into the RV but not back toward the campground supply, reducing the chance of contaminants entering your fresh water plumbing. The rubber dust plug covers the connection when not in use to keep dirt and insects out.

• Lead-free brass body resists corrosion and maintains potable water safety.
• One-way check valve design prevents backward flow into your system.
• Flexible rubber dust plug seals the inlet when disconnected.
• Flush 3" flange provides a clean exterior install and protects the valve.

Is this connector easy to install and compatible with my RV fittings?

Yes — the unit threads into standard 1/2" NPT female plumbing inside the RV and accepts a 3/4" NH (GHT) garden-style hose on the exterior, making it compatible with most campground city water hoses. Installation requires correct flange orientation to prevent physical stress on the valve; the flange seats flush to the RV wall for a neat finish.

• 3/4" NH (GHT) female inlet fits common RV hose couplers.
• 1/2" NPT male threads connect to standard RV plumbing.
• 3" plastic flange provides mounting footprint for flush installation.
• Hand-friendly grip on the inlet makes hoses simple to attach.

What materials and durability features should I expect from this water inlet?

The main housing is constructed from lead-free brass to protect water quality while providing strength and corrosion resistance. The flange is made of durable plastic to resist cracking, and the rubber dust plug is flexible for repeated use. These materials together allow the valve to withstand typical pressures and outdoor environmental conditions encountered during travel and storage.

• Lead-free brass body ensures safe potable water contact.
• Corrosion-resistant finish prolongs service life outdoors.
• Rigid plastic flange resists impact and weathering.
• Rubber plug offers a tight seal and easy replacement if worn.

What common problems should I watch for after installation?

Improper flange angle or misalignment during mounting can place torque or bending forces on the valve, which may lead to premature failure. Ensure the flange sits flush and the threads are fully engaged. Periodically check the dust plug and valve for debris and replace the plug if it becomes cracked.

• Always align the flange flush with the RV wall to avoid stress.
• Hand-tighten hoses; avoid excessive wrench torque on the inlet.
• Inspect the rubber plug for wear and replace as needed.
• Check for leaks after first pressurizing the system.

Who this is for: RV owners, camper renovators, and marine trailer users who want a reliable, lead-free city water hookup with backflow prevention and a dust-protected port. It's ideal for anyone replacing a worn inlet or upgrading older fittings to a safer, corrosion-resistant brass valve that accepts standard campground hoses.