从1975年开始，通过采用先进的质量控制技术和检验设备的技术更新，威廉姆森阀门开始生产高质量的阀门和管件产品。
Williamson Valves produced high quality valve and fitting products by adopting advanced quality control techniques and innovative inspection facilities in 1975.
明杆：这种阀门工作压力是125磅级和200psi冷水压力，明杆，管接头式阀盖，实心楔板，并按照美国阀门和管件制造商标准化协会MSS-SP80标准制造。
Rising Stem: Valves shall be Class 125 and 200 psi CWP, rising stem, union bonnet, solid wedge and manufactured in accordance with MSS-SP 80.
管路是由管子、管件和阀门组成。
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