Moccamaster Leaking Drip-Stop Valve

Brew basket drips coffee onto hotplate after carafe is removed

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Possible Causes

Worn drip-stop seal, Debris preventing full closure, Weak or damaged drip-stop spring, Misaligned carafe lid actuator

How to Fix / Troubleshooting

Safety: Allow the brew basket to cool before handling to avoid burns.

  • Clean the valve: Remove the brew basket and rinse the drip-stop area thoroughly. Use a small brush to remove coffee residue from the seal and moving parts.
  • Inspect seal and spring: Check the rubber seal for cracks or deformation and ensure the spring returns the valve fully closed. Replace the drip-stop assembly if worn.
  • Check carafe lid: Ensure the carafe lid actuator is not bent or damaged and that it fully releases the valve when the carafe is removed.
  • Test operation: Fill the basket with water and place it over a sink. Manually actuate the valve to confirm proper sealing when released.
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Repair Difficulty

Very Easy 1/5

Required Part

Drip-Stop Valve Assembly
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