Drazice Normal Expansion Discharge or Overpressure

Water dripping from the safety valve discharge pipe on a Drazice water heater, especially during heating.

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Possible Causes

Thermal expansion of water with no expansion vessel, faulty or scaled safety valve, excessive mains pressure above valve rating, blocked expansion vessel on closed systems

How to Fix / Troubleshooting

Safety: The safety valve is a critical protection device. Never plug or cap the discharge pipe.

Steps:

  • Observe if dripping occurs only during heating and stops afterward. Small intermittent dripping can be normal due to expansion.
  • If flow is continuous or heavy, check the cold water pressure with a gauge. Install or service a pressure-reducing valve if pressure exceeds the Drazice specification.
  • On closed systems, ensure an expansion vessel is installed and correctly pressurized. Recharge or replace the vessel if the diaphragm has failed.
  • Operate the safety valve test lever briefly to flush debris. If the valve continues to leak, replace it with a valve of the correct pressure rating recommended by Drazice.
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Repair Difficulty

Easy 2/5

Required Part

Safety / Pressure Relief Valve
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