Manually operated ball valves and closed bottom taper plug valves for gas installations for buildings ; german version en 331 : 1998 建筑物燃气设备上的手动球阀和底部关闭锥形塞阀
Then as the plug valve is lifted off its seats , any accumulation below the plug or on the seats will be blown back into the line 然后,当旋塞阀升离阀座时,任何累积在阀塞或阀座上的吹入物质都将被吹回到管路内。
Nibco series 100 , quality , line of electric actuators are designed for quarter - turn applications ? ball , butterfly and plug valves ; dampers ; vents and similar uses 美国尼伯科100系列优质电动执行机构专为90o旋转用途的球阀、蝶阀、旋塞阀、调节阀、通风口等类似应用设计制造。
Nibco series 300 , quality , line of electric actuators are designed for quarter - turn applications ? ball , butterfly and plug valves ; dampers ; vents and similar uses 美国尼伯科300系列优质电动执行机构专为90o旋转用途的球阀、蝶阀、旋塞阀、调节阀、通风口等类似应用设计制造。
In order to ensure that each valve flap valve seat surface can reach the appropriate location , in valve design hinge agencies , in order to have enough plug valve kai xuan space , and the valve genuine and comprehensive engagement with the valve seat 为了确保阀瓣每次都能到达阀座面的合适位置,阀瓣设计在铰链机构,以便阀瓣具有足够有旋启空间,并使阀瓣真正的、全面的与阀座接触。