Finding a drip at an RV city-water hookup starts with locating the wet joint. A leak at a hose swivel can have a different cause from seepage around the wall inlet, an inline filter or a pressure regulator. This illustrated guide shows what to inspect first and connects the relevant washers, hose protectors and complete inlet assemblies by exact manufacturer number.
Find the leak along the water connection
Check the campground tap and any externally fitted regulator for wet threaded joints.
Inspect the female hose washer, threads, coupling and any sharp bend near the faucet.
Look at both ends of a filter, pressure-control device or hose protector, not only its housing.
Distinguish the outside hose swivel, flange seal, internal fitting and check-valve assembly.
What does the leak location suggest?
| Where you see water | What to examine | Parts worth identifying |
|---|---|---|
| Around a hose swivel | Washer condition, seating surface and thread damage | Camco 20153 plain seal or 20183 screened seal |
| At a tight bend by the tap | Hose crimping and coupling strain | Camco 22703 hose-end protector |
| At a filter or regulator connection | Both threaded joints, washers, housing and correct pressure control | The exact filter/regulator model and its mating hose |
| At the RV wall flange or inlet body | Mounting seal, fitting cracks and connection behind the wall | Original inlet MPN and internal thread type |
| Out of the disconnected city-water port | Possible inlet check-valve sealing problem, particularly if the onboard pump pressurizes the plumbing | Matching complete inlet or model-approved service part |
These observations narrow down what to inspect; they do not prove the cause. If water is reaching concealed RV wall materials, have the inlet and plumbing checked before further use.
Hose washers and strain relief
For a leaking female garden-hose coupling, compare the original flat gasket with Camco 20153 (ten self-locking rubber washers) or 20183 (three screened washer assemblies). A screen helps catch some grit, but it is not a complete inline water filter. Camco 22703 supports the hose near its end to reduce sharp bends; it does not repair split hose material or stripped threads.
Know the city-water inlet before replacing it
Valterra A01-0170LF and A01-0171LF have similarly sized 2¾-inch exterior flanges and built-in check valves, but their interior plumbing connections differ: 0170LF uses ½-inch male pipe thread, while 0171LF uses ½-inch female pipe thread. The SHURflo 183-029-14 is another inlet type with an integral check valve and a nominal 65 PSI regulator. Compare the existing wall opening, depth, rear fitting and inlet face before ordering.
Filters and regulators have their own seals
Camco 40054 is a preset stainless-steel regulator listed at 50–60 PSI without a gauge. Camco 40064 is a separate brass preset model with an integrated gauge, listed at 40–50 PSI. Neither should be selected solely to cure a leaking washer. Camco 40013 is a complete TastePURE hose-connected filter with a flexible protector; inspect the hose-facing connections if a drip occurs at the filter.
