The built up type by-pass is available on all NIBCO iron valves and is attached in accordance with MSS By-pass and Drain Connection Standard SP-45.

• 组装型旁通路用于所有尼伯科铸铁阀门,符合美国阀门及配件制造业标准化协会(mss)的旁通路和排泄连接装置标准SP-45。