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Known as the slow opening spool, it is used in the spiral opening of cast iron faucets, and has now been basically eliminated.
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2. Ceramic spool
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It is called quick opening spool. It is a new favorite of valve core materials in recent years. Ceramic spool will not be harmful to water quality secondary pollution, while the price is affordable, the service life of a ceramic spool can generally reach more than 10 years, can withstand high and low temperature changes. However, ceramics are more fragile, and the water quality requirements are also relatively high. In general, the ceramic spool plays a good sealing role, and some imported ceramic chips have relatively better sealing performance, stable physical properties, wear resistance, and long service life.
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2. Shaft roller spool
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The operation is simple, feel comfortable, the whole valve shaft is one, easy to install and repair and replace. Its main characteristics are wear resistance and aging resistance. However, the roller spool is an old model, and it has been slowly unable to meet people's pursuit of the spool, so the scope of application has also been reduced.
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3, stainless steel ball valve
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It is a relatively new type of valve core material. Stainless steel spool for water quality requirements are not high, will not be eroded by impurities in the water, any area can use it, do not worry about affecting the life. At the same time dismantling and installation are very convenient, but the price is more expensive.