Boltigen RV Water Inlet Check Valve 3/4" NH to 1/2" NPT - Lead-Free Brass, White Flange

Boltigen's RV water inlet replacement is a lead-free brass city water fill flange with a built-in check valve and dust cap designed to stop backflow and keep your RV's fresh water safe.

When you need a reliable city water connection for an RV, camper or trailer, this inlet flange combines durable materials and a simple design to protect your onboard plumbing. It converts a 3/4" NH (GHT) female connection to a 1/2" NPT male inlet and includes a molded white flange plus a flexible rubber dust plug. Built from lead-free brass and sturdy plastic components, the unit resists corrosion and daily wear while the internal check valve prevents contaminated water from flowing back into your fresh water lines.

How does this inlet prevent backflow into an RV's fresh water system?

The built-in check valve opens to allow city water in and closes automatically to block reverse flow, reducing the risk of contaminated water returning to your potable system. It’s a passive mechanical device—no batteries or electrical parts—so it works whenever pressure changes occur at the inlet.

• Internal check valve mechanism stops reverse flow.
• Lead-free brass body resists corrosion that can compromise fittings.
• Simple installation avoids modifying existing plumbing layouts.
• Rubber dust cap keeps debris out when disconnected.

Is this inlet easy to install and compatible with standard RV hookups?

Yes — the inlet is made to fit common RV city water fittings: a 3/4" NH (garden hose thread) female face with a 1/2" NPT male pipe connection for the interior plumbing. The flange has a 3" diameter for easy mounting and the easy-grip outer knob offers quick hose attachment and removal.

• 3/4" NH (GHT) female exterior connection for standard hoses.
• 1/2" NPT male thread for typical RV plumbing connections.
• 3" white plastic flange designed for straightforward mounting holes spacing.
• Ergonomic grip for hand-tightening without tools.

What materials and durability features does the Boltigen inlet offer?

The unit combines lead-free brass for the main body with a durable plastic flange and a flexible rubber dust cap, balancing longevity and safety for drinking water systems. Those materials help the inlet withstand pressure changes, temperature swings and regular connection cycles typical in RV use.

• Lead-free brass body for safe potable water compatibility.
• Plastic flange that resists cracking and keeps weight low.
• Rubber dust plug to protect the connection from dirt and insects.
• Factory-tested check valve for consistent performance out of the box.

What should I expect for maintenance and warranty coverage?

Maintenance is minimal: keep the dust cap on when not in use and inspect the check valve occasionally for debris. Boltigen inspects each unit before shipping and offers a refund or replacement if you encounter defects, so you’re covered if the inlet arrives damaged or malfunctions.

• Periodic visual checks and cleaning if debris is present.
• Replace the rubber plug if it becomes worn to maintain a dust seal.
• 100% inspection at the factory; contact Boltigen for refunds or replacements.
• Simple part replacement if needed—no complex tools required.

Who is this for: This Boltigen inlet is aimed at RV owners, camper renovators, and marine trailer users who want a straightforward, durable city water connection with backflow protection. It’s ideal for DIY installers and professionals who need standard thread compatibility, a compact 3" flange, and a corrosion-resistant brass body to maintain a clean, functional freshwater plumbing system on the road.