Packing materials for wedgeplug valves are covered in materials of construction 楔形塞阀门的填料材料包括在结构材料范围内。
2.
All pacific wedgeplug valves are subjected to an extensive quality assurance and testing program prior to shipment 所有美国太平洋楔形塞阀门在出厂之前，都经过一系列质量保证管理程序和检测程序。
3.
Gaskets regularly furnished in class 150 and 300 wedgeplug valves are corrugated soft iron of excellent strength and ductibility . classes 600 - 1500 are ring - joint type 压力等级为150和300的楔形塞阀门通常配置的垫圈是波纹状软铁，具有优异的强度和延展性。压力等级600 - 1500则采用环连接类型。
