[Lifetime Warranty] RV City Water Inlet Brass with Check Valve - 3/4" NH Female to 1/2" NPT Male Thread - Includes Dust Plug
RV brass city water inlet with check valve, dust plug, mounting screws, and filter screen.
Dimensional diagram of RV city water inlet with brass check valve showing measurements in inches.
Diagram showing RV city water inlet thread specifications for 3/4 inch NH female and 1/2 inch NPT male connections.
Diagram of RV city water inlet showing one-way check valve function and stainless steel filter screen.
Comparison chart showing low-lead brass RV city water inlet valve versus a fragile plastic alternative.
RV city water inlet with brass check valve and included accessories like dust plug, Teflon tape, filter, and screws.
Three-step installation guide for RV city water inlet with brass check valve and pipe connections.
Brass RV city water inlet with check valve and dust plug shown in a collage with various recreational vehicles.
RV brass city water inlet with check valve, dust plug, mounting screws, and filter screen.
Dimensional diagram of RV city water inlet with brass check valve showing measurements in inches.
Diagram showing RV city water inlet thread specifications for 3/4 inch NH female and 1/2 inch NPT male connections.
Diagram of RV city water inlet showing one-way check valve function and stainless steel filter screen.
Comparison chart showing low-lead brass RV city water inlet valve versus a fragile plastic alternative.
RV city water inlet with brass check valve and included accessories like dust plug, Teflon tape, filter, and screws.
Three-step installation guide for RV city water inlet with brass check valve and pipe connections.
Brass RV city water inlet with check valve and dust plug shown in a collage with various recreational vehicles.
Lifetime Warranty

[Lifetime Warranty] RV City Water Inlet Brass with Check Valve - 3/4" NH Female to 1/2" NPT Male Thread - Includes Dust Plug

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RV City Water Inlet Brass with Check Valve - 3/4" NH Female to 1/2" NPT Male Thread - Includes Dust Plug

Key Features

  • Construction: Lead-free brass fitting with a durable, UV-resistant housing.
  • Integrated Check Valve: Prevents backflow from the RV's plumbing system.
  • Inlet Connection: 3/4 inch NH (GHT) female for standard garden hoses.
  • Outlet Connection: 1/2 inch NPT male for direct connection to RV water lines.
  • Included Accessories: Comes with a press-in dust plug to keep debris out and a screen filter washer.

Replaces / Cross-Reference Part Numbers

  • Serves as a direct replacement for most standard OEM city water inlets with a 3-inch diameter flange and 1/2-inch NPT male connection.

Compatibility & Fitment

  • Flange Diameter: 3 inches
  • Hose Thread: 3/4 inch Garden Hose Thread (GHT), also known as National Hose (NH).
  • Pipe Thread: 1/2 inch National Pipe Taper (NPT).
  • Application: Universal fit for most recreational vehicles, motorhomes, campers, and travel trailers.

When to Replace

  • Visible cracks, discoloration, or brittleness in the plastic housing.
  • Persistent leaking at the hose connection or from the flange mount.
  • Failure of the internal check valve, causing water to drain back out of the inlet.
  • Stripped or damaged threads on either connection.

Installation Tips

  • Ensure the water supply is disconnected and the RV system is depressurized before removal.
  • Apply plumber's tape (Teflon tape) to the 1/2 inch NPT male threads to ensure a leak-proof seal.
  • Clean the RV exterior surface before mounting the new flange.
  • Tighten mounting screws evenly to create a flush seal against the RV wall. Do not overtighten.
  • After installation, connect a water source and check for leaks before restoring full pressure.
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RV CITY WATER INLET

RV CITY WATER INLET

Enjoy cleaner water and smoother travels

FAQ

This inlet has a 3/4" NH female garden-hose style connection on the outside for your city water hose and a 1/2" NPT male threaded connection on the back side for the RV plumbing connection.
The check valve helps prevent water from flowing backward out of the inlet. This is important when the RV is connected to city water, because it helps stop internal system pressure from pushing water back through the port.
Common signs include leaking around the inlet body, water dripping from the connection even when the hose is tightened correctly, backflow through the port, a damaged hose-thread connection, or a cracked housing. A failed internal check valve can also cause poor sealing or water escaping from the inlet.
It is commonly used as a general replacement style for RV city water hookups, but fit depends on your existing cutout, mounting pattern, and plumbing connection. Before ordering, confirm that your current inlet uses a 3/4" NH hose connection and a 1/2" NPT male rear connection, and compare the mounting style to your original part.
Typical installation uses basic hand tools such as a screwdriver for the mounting screws, an adjustable wrench or pliers for the plumbing connection, and thread sealant or PTFE tape for the 1/2" NPT threads if recommended for your RV plumbing setup. Installation is usually straightforward if the inlet is easily accessible.
If the inlet is easy to access from the back side of the wall, replacement often takes about 15 to 45 minutes. It can take longer if interior panels must be removed to reach the plumbing connection or if old sealant has to be cleaned off.
Turn off the water supply, disconnect any hose, and relieve system pressure first. Inspect the rear plumbing fitting, mounting surface, and sealant area for cracks or water damage. It is also a good idea to check the hose washer and your pressure regulator, since excessive water pressure can shorten the life of city water inlets and check valves.
The dust plug helps keep dirt, insects, and debris out of the city water connection when the port is not in use. Keeping the inlet clean can help protect the check valve and hose-thread connection from contamination and damage.