欧美日韩成人在线影院_亚洲免费在线观看中文字幕_麻豆福利夜间视频_成人免费看片又大_中文字幕欧美手机精品_青青在线看片_久久天天躁日日躁狠狠躁_国产一级黄片一区二区三区_撕开奶罩疯狂揉吮奶头_啊快舒服亚洲视频

簡(jiǎn)體中文版 English

Product List

Plug valve is the valve through a fast switch, because the rotary movement between the sealing surface with a clean, and in the fully open can completely prevent contact with the fluid medium, so it usually can also be used with suspended particles of the medium. Another important feature of the plug valve is that it is easy to adapt to multi-channel structure, so that a valve can get two, three, or even different channels of the four. This simplifies the design of piping systems, reduces valve usage, and requires some connection fittings in the equipment.
Mandatory
Mandatory
Mandatory
Mandatory

Be sure to write clearly consulted or purchase products detailed parameters and quantity.