Boltigen RV Water Inlet Replacement Check Valve — Brass Backflow Preventer, 3/4 NH Female to 1/2 NPT Male, 3” Flange

Meet Boltigen's RV water inlet replacement check valve, a compact brass backflow preventer designed for city water fills in campers, travel trailers, and motorhomes. This valve adapts from a 3/4 NH (GHT) female connection to a 1/2 NPT male hose thread, paired with a 3 inch white flange. A flexible rubber dust plug is included to seal the connection when not in use, helping keep grit and dust out of your system.

The brass body is lead-free, contributing to safer water contact, while the white flange uses durable plastic for lasting support. The overall build is designed to withstand everyday RV pressure and temperature swings, and it resists corrosion from exposure to water and outdoor elements.

In practice, this check valve sits in your fresh water line to help prevent backflow and reduce the risk of contaminants traveling into the RV's plumbing when the city water hose is in use. The rubber cap keeps the connection point clean during storage on the road.

Key design features

• Material quality: lead-free brass core for durability and long life; durable white plastic flange offers a solid mounting surface.
• Connection versatility: 3/4 NH female to 1/2 NPT male thread supports common city water hoses and connectors.
• Backflow prevention: built-in check valve helps regulate water flow and reduce backflow risk.
• Protective dust management: included rubber plug guards the connection when not in service.
• Ease of use: simple grip and detach function with a user-friendly hose connection point.

Practical use and installation notes

• Install inside the RVs fresh water system to maintain clean water supply during hookups to city water.
• The 3 inch flange provides stable mounting and a clean finish in the inlet area.
• Designed for frequent daily use, with corrosion resistance and temperature tolerance in mind.

What you get and support

Each purchase is quality-checked before shipment, with a dedicated support option if you need assistance or a replacement. A 100% satisfaction approach underscores the product offering, including options for exchange or refund if needed.