RV Water Inlets, Fills & Hatches

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38 products

B&B Molders Hot Water Tank Diverter Valve 94228 - Front View | United RV Parts
$99.99 $134.99

B&B Molders | Hot Water Tank Diverter Valve | 94228
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Your RV's water fill inlet and hatch cover take more wear than most people expect. Repeated connections, exposure to the elements, and general campground use can leave them cracked, faded, or no longer sealing properly. A damaged hatch cover can allow moisture and road debris into the fill area, while a worn inlet can make connecting a water hose difficult or unreliable.

Replacing a water fill inlet or hatch cover is a straightforward repair that restores a clean, secure connection point for your fresh water supply. Our selection covers a range of styles, colors, and configurations to suit most RV exterior setups. Check your existing inlet size and hatch dimensions before ordering to confirm the correct fit for your RV.

How do I choose the right RV water inlet replacement?

Start with three measurements from your existing inlet: the outside dimensions of the flange, the size of the wall cutout behind it, and the screw-hole spacing. Then check the connection on the back. Most RV city water inlets accept a standard 3/4" garden hose thread on the outside, but the rear outlet varies (1/2" PEX barb, 1/2" male pipe thread, or a 90-degree elbow), so match it to your plumbing before ordering. Note whether your current inlet has a built-in check valve, because some replacement inlets in this collection include one and others do not.

What is the difference between an RV gravity water fill and a city water inlet?

A gravity fill is an unpressurized port that feeds water directly into your fresh water tank, and your 12V pump then supplies the faucets. A city water inlet connects to a pressurized campground spigot and bypasses the tank to supply your plumbing directly. Many RVs have both, sometimes combined in one hatch with a tank-fill switch. If your shore power cord passes through the same side wall, our RV cable hatches use similar flange mounting and are often replaced at the same time.

Why does water leak out of my city water inlet when the pump is running?

A leak from the inlet when the pump runs almost always points to a failed check valve inside the inlet. The check valve stops pump pressure from pushing water back out through the hose connection. You can replace the valve on some models, but on sealed units the full inlet must be replaced. When you reconnect to campground water, use a pressure regulator set around 40 to 50 psi. High spigot pressure wears out check valves faster and puts strain on fittings and the relief valve on 10 gallon RV water heaters.

Can I find an RV water inlet near me?

United RV Parts sells online only, so we have no local counter, but every RV water inlet, fill, and hatch in this collection ships to your door, with free shipping on orders over $100. That is often faster than calling local shops to find one that matches your flange size and outlet connection. Before ordering, text or call 817-984-1852 with a photo of your existing inlet and its measurements, and we will confirm the correct replacement.