COMPATIBILITY FIRST · NO INTRO ADS
Replace a faucet supply hose
Replace a separate gasketed supply connector with matching ends and a relaxed curve.
Illustrated version: A separate accessible supply connector between a 3/8-inch compression stop and its matching faucet inlet, illustrated with the BrassCraft wing-nut connection style in instruction sheet 425.10. Check applicability ↓
Read the narration transcript
Fix a leaking supply connection by checking its seal; replace a split or damaged hose. This example uses a gasketed connector between a three-eighths-inch compression stop and its matching faucet inlet. Match both ends and length. Close both supplies, open the faucet, and verify no flow. Stop for failed shutoffs, moving pipe, or severe corrosion; call a plumber. Put a bowl below. Dry the hose and fittings to pinpoint the leak. A loose union may need gentle snugging to its maker’s instructions. Persistent union leakage or a split hose calls for replacement. Counterhold the valve body while turning only the connector nut; support the faucet fitting too. Disconnect both ends without twisting pipes. Check the seats and check the new hose’s factory seals are seated. Never add tape or sealant to these gasketed compression connections. Hand-start both nuts squarely. For the illustrated BrassCraft wing-nut kit, hand-tighten the faucet end only; the valve end gets a further quarter-turn. Other connectors differ. Keep a relaxed curve without twist or kinks. Slowly reopen both supplies. Test running and stopped, and check every joint with dry tissue.
01 / MATCH YOUR DESIGN
Confirm this is your version.
- A separate accessible supply connector between a 3/8-inch compression stop and its matching faucet inlet, illustrated with the BrassCraft wing-nut connection style in instruction sheet 425.10.
- Match both connection types, length and manufacturer instructions. No universal faucet-end thread size or hose SKU is implied.
- For this illustrated kit only: hand-tighten the faucet wing nut; hand-tighten the valve-end nut, then add a quarter-turn. Other connectors differ.
- This is not the integrated supply tubing on a Moen Arbor faucet. Replacing a valve, ferrule, pipe or integral faucet tube is outside this procedure.
Representative educational geometry, not manufacturer CAD or certification. Use the instructions supplied with your exact fixture and replacement part.
02 / CHECK BEFORE BUYING
Find the source of the problem.
- Dry the hose and fittings to locate the leak. A union, split hose, valve stem or faucet body can leak for different reasons.
- After safe isolation, a loose union may need only gentle snugging to its maker's instructions. Replace a split/damaged hose or a connector with persistent seal leakage.
03 / PARTS & PREPARATION
Have the right tools ready.
- Correctly matched new supply connector with factory seals intact
- Two correctly fitting hand wrenches for the valve end and counterhold
- Bowl, towels, flashlight and dry tissue
These checks are for your use. They do not certify compatibility and are not saved.
04 / THE PROCEDURE
Work through the repair.
- Match the hose and both ends. Fix a leaking supply connection by checking its seal; replace a split or damaged hose. This example uses a gasketed connector between a three-eighths-inch compression stop and its matching faucet inlet. Match both ends and length.
- Isolate, relieve and catch drips. Close both supplies, open the faucet, and verify no flow. Stop for failed shutoffs, moving pipe, or severe corrosion; call a plumber. Put a bowl below.
- Find the source of the leak. Dry the hose and fittings to pinpoint the leak. A loose union may need gentle snugging to its maker’s instructions. Persistent union leakage or a split hose calls for replacement.
- Counterhold and disconnect. Counterhold the valve body while turning only the connector nut; support the faucet fitting too. Disconnect both ends without twisting pipes. Check the seats and check the new hose’s factory seals are seated. Never add tape or sealant to these gasketed compression connections.
- Connect without twisting. Hand-start both nuts squarely. For the illustrated BrassCraft wing-nut kit, hand-tighten the faucet end only; the valve end gets a further quarter-turn. Other connectors differ. Keep a relaxed curve without twist or kinks.
- Restore and check both joints. Slowly reopen both supplies. Test running and stopped, and check every joint with dry tissue.
05 / VERIFY THE RESULT
Test operation and check for leaks.
- Reopen both supplies slowly and test hot and cold.
- Inspect both hose ends while running and with the faucet closed; use dry tissue to reveal fresh moisture.
- Recheck at rest. If a leak remains, isolate the supply safely and get help.
KNOW YOUR LIMITS
Stop and get qualified help when…
- Either shutoff fails or water/pressure remains
- Moving pipework, severe corrosion, damaged valve or faucet seat
- Cross-threading, an incompatible connector or damaged factory seals
- Hose must be stretched, kinked or twisted to fit, or leakage persists
Use your actual parts prices, tool costs and an all-in local service quote when deciding. A cheaper repair is not worth unsafe isolation or water damage.
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MANUFACTURER REFERENCES
Sources & scope.
The references below support the named example. Their instructions and version notes take priority if your fixture differs.
Checked October 15, 2026. Information links only. No affiliate links or parts sales.