I believe that most people have had the experience of buying taps, from dozens of pieces to thousands of pieces. How can we pick high quality, safe and affordable taps? Xiao Bian summed up a few points, hoping to help everyone pick the right tap.
First, the raw material processing technology
The common faucets on the market today are brass, stainless steel, and zinc alloy materials.
Brass
The most common material for the faucet manufacturing is the H59/H62 copper of the international standard. The casting is made of a steel die for gravitational casting. The wall thickness is uniform, generally 2.5-3.0 mm.
Features are: no rust, durable, anti-oxidation, bactericidal effect on water
The disadvantages are: lead. Lead does not need to say that everyone also knows that it is not a good thing. It has great harm to the human body. Therefore, the international standards require that lead in copper content should not exceed 2.5%.
2, stainless steel
Lead free, acid and alkali resistant, non-corrosive, hardness and toughness more than twice that of copper taps, and all the materials used are made of high quality 304 stainless steel.
The characteristics are: high hardness, strong toughness, health, environmental protection, will not lead to secondary lead pollution.
The disadvantages are: the difficulty in manufacturing and processing is relatively high, resulting in the increase in the cost of the faucet and the number of types.
3, zinc alloy material
Low-grade materials are generally made of sand-turning technology and machine die-casting, and the interior is smooth and flat.
The characteristics are: the density of zinc alloy is smaller than that of copper, and the handle does not have heavy copper faucet, the surface is easily oxidized, the shell is easily corroded and broken after being impacted by water, and the surface is white after grinding.
The disadvantages are: the service life is not long, only one to two years of service life, high lead content. Harmful to the human body.
Second, the faucet production process
High-grade water faucets are usually cast by gravity. The internal structure of the valve body metal is dense, the quality passes, and the service life is long. Generally, the selling price is more than one hundred yuan. Less than one hundred yuan products generally adopt the manufacturing process of sand casting. After a period of use, there may be water leakage, lax sealing, or even greater defects.
Faucet production process:copper ingot→dissolution→casting (low-grade casting with sand casting, high quality faucet with gravity casting)→cleaning after casting→casting inspection→machining→tolerance inspection→grinding→surface inspection→electroplating→galvanization inspection→ Assembly → Test pressure → Finished product inspection → Packaging → Factory. So, the high-priced tap has his reason.
Third, the valve core
The valve core is the heart of the faucet and the ceramic valve core is the best valve plug. The products with better quality on the market all adopt ceramic valve cores, which have strong wear resistance, good sealing performance, and use times of more than 300,000 times. Low-grade products often use seals such as copper and rubber, which have a short service life, but the benefits are: Low prices.
Fourth, plating
In chrome-plated products, the average product is 20 microns thick. The material is prone to be oxidized by air for a long time. The exquisite workmanship of copper chrome plating is 28 microns thick. Its structure is tight, the coating is uniform, and the color is bright, smooth and delicate. Can still keep the light as new.
Fifth, after sales
Manufacturers of good brands have guaranteed quality and are not inferior to after sales. The average small manufacturer may not be able to guarantee for cost considerations. It depends on the luck and character of the buyer. The kitchen faucet is best to choose a large brand service provider with after-sales service, to ensure the use of kitchen faucet without worries.
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