日本丰满白嫩BBWBBW_日韩无码一区_欧洲精品码一区二区三区免费看_欧美日韩精品亚洲综合中文一区_午夜福利不卡片在线播放 _国产欧美一区二区三区精品蜜桃_免费毛片一区二区三区久久久_国产精品欧美复古日韩经典在线

一、General Description

KF type pressure gauge switch is a small stop valve or throttle valve, is mainly used to cut off the pressure gauge and oil connections, or adjustment open size, lighten the pressure gauge sharp beating, prevent damage, also as a general small flow cut-off valve or throttle valve. Pressure oil intertace with inner and outer thread connection