In general, stainless steel ball valve maintenance costs are relatively large.

一般情况下，不锈钢球阀维修的成本相对较大。

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Fine grinding of stainless steel ball can ensure years opened and closed freely, reliable operation.

研磨精细的不锈钢球体可以保证多年开闭自如，运行可靠。

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Tap valve on the common market, there are three: stainless steel ball valve, ceramic valve core and valve shaft roll style.

市场上常见的水龙头阀芯有三种：不锈钢球阀，陶瓷片阀芯和轴滚式阀芯。

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Inside there are just three stainless-steel ball bearings, housed in anodized aluminum bar stock.

FORBES

Thousands of genes stick to each ball, and the combination is loaded into a "gene gun"--two small stainless-steel chambers and a vacuum pump--that uses compressed helium.

FORBES: Millions Served