直角三通阀
right angle three way valve
tap模锻锤安全阀总管三通管试验分接头
impactor relief valve manifold tee test
电动三通调节阀
Electric three-way regulating valve
电动三位四通阀
electric three-potential four-way valve
二位三通方向控制阀
two-position three way directional control valve
二位三通高频响插装阀
2-and 3-way high frequency response cartridge valv
三通半球阀
three-way half ball valve
三通比例减压阀
three-way proportional pressure reducing valve