Why do Italy Brass valves turn green?

The greening of brass valves over time may be due to the following reasons:

  • Brass Ball rusting: Brass rusting may be the result of the combined action of brass with oxygen, carbon dioxide, and water.
  • Water source pollution: Sodium hypochlorite is added to the tap water for disinfection. The chemical property of sodium hypochlorite is unstable and will decompose chlorine when exposed to sunlight. A small amount of chlorine dissolved in the water will cause the Brass valve to turn green.
  • Algae growth: The PVC hose for receiving water is white and translucent. After exposure to sunlight, the pipe wall becomes a favorable environment for the growth of algae such as moss, which also causes the water color to turn green.

The solution after the Brass valve turns green

  1. Vinegar soaking method: Wash the rusty Brass valve, place it in a small dish, pour a little edible vinegar until it is submerged. After 24 hours, take it out, use a small brush to brush off the residual rust, then wash with clean water and wipe it dry.
  2. Boiling water soaking method: When the rusted Brass is sometimes covered with a layer of soil rust that cannot be washed off, you can first put the rusted Brass in a bowl, then pour boiling water with a temperature of 80°C to 90°C until it is submerged. Take it out after 5 minutes, brush it clean with a small brush, and dry it in the shade. In case of severe soil rust, the water can be heated to boiling to make the soil rust fall off.
  3. Dry brushing method: When the brass rust or iron rust is attached relatively shallowly, chemical methods such as vinegar soaking should be avoided as much as possible, and the dry brushing method can be used instead. The specific method is to choose a large oil painting brush, and cut the brown hair on the brush head to 0.5-0.7 cm from the root. First fix the brass door to be brushed for rust, hold the root of the oil painting brush and brush evenly, pay attention to the force, otherwise the effect will not be good, and then wash it with clean water.

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