Why does hot water occasionally spurt put of quarter turn mixer tap?

Occasional spurting of hot water from a quarter-turn mixer tap can be a frustrating and potentially hazardous issue. Understanding the causes behind this problem can help you find effective solutions to prevent it. Here are some reasons why hot water might sputter out of your tap:

1. Incorrect Installation: If the tap was not installed properly, it could cause the hot water to flow unevenly, leading to occasional spurting. Check that all connections are secure and that the tap is correctly fitted.

2. Faulty Cartridge: Quarter-turn taps typically have a cartridge that controls the flow of water. Over time, the cartridge can become worn or damaged, leading to inconsistent water flow and potential spurting. Replacing the cartridge may solve the problem.

3. Blocked or Faulty Aerator: The aerator is the small screen or mesh at the tip of the tap that regulates water flow and prevents splashing. If the aerator is blocked with debris or becomes faulty, it can disrupt the smooth flow of water and cause spurting. Clean or replace the aerator if necessary.

4. High Water Pressure: Excessive water pressure can put a strain on the tap and its components, leading to spurting. Check your home's water pressure using a pressure gauge. If the pressure is consistently higher than the recommended level (usually around 40 to 60 psi), you may need to install a pressure-reducing valve to regulate the water flow.

5. Faulty Washer or O-Ring: A worn-out or damaged washer or O-ring in the tap can cause leaks and inconsistent water flow, resulting in spurting. Replace the washer or O-ring if you observe any signs of wear or damage.

6. Temperature Fluctuations: Sudden changes in water temperature can cause the tap's components to expand and contract, leading to spurting. If your hot water system is experiencing temperature fluctuations, consider installing a thermostatic mixing valve to regulate the temperature and ensure consistent flow.

7. Faulty Tap Body: In rare cases, the tap body itself may be defective or damaged, leading to internal issues and spurting. If all other potential causes have been eliminated and the problem persists, it may be necessary to replace the entire tap.

If you are unable to identify and fix the cause of the spurting hot water, it is recommended to consult with a qualified plumber who can diagnose and resolve the issue safely and effectively.