不锈钢阀头和阀座延长使用寿命。
Stainless steel valve head and seats provide long service life.
这种阀门应该是黄铜阀体,不锈钢阀杆和弹簧。
Valve shall have a brass body and stainless steel stem and spring.
阀杆材质,力求不锈钢阀杆(2cr13),大口径阀门也应是不锈钢嵌包的阀杆。
Stem material, and strive to stainless steel stem (2cr13), large diameter valves also should be embedded in the package of stainless steel valve stem.
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