防通阀 bypass valve
二通阀 two-way valve
三通阀 three-way valve
塞子 plug
端盖 cap
垫 gasket
垫料 gasket
填料 packing
喇叭口接头 flared joint
扩口工具 flaring tool
胀口工具 swaging tool
弯曲弹簧 bending spring
弹簧弯管器 bending spring
扭矩扳手 torque wrench