国产又粗又黄又爽_中国女人a毛片免费全部播放_国产女人被躁高潮视频在线视频最新_一级毛片免费完版_成人精品欧美日韩_五月丁香色综合久久4438_国产成年人免费观看91视频_宅宅236伦理2019最新_blue在线观看视频全集资源_国产欧美日韩麻豆三级

簡體中文版 English

Product List

(Note: all information is for parameters only)
Q41PPL high temperature ball valve for many years experience in the design of the valve seat, to ensure that the valve seal, low friction coefficient, operating torque is small, a variety of seat materials, a wide range of.
1, advanced seat: Poly years of experience in the design of the valve seat, to ensure that the valve seal, friction coefficient is low, the operating torque is small, a variety of seat materials, a wide range of.
2, switch on the handle: the flat head stem, and the handle of the connection will not be misplaced, so as to ensure that the switch status and the valve is a speech.
3, locking device: to prevent misuse valve switch, the valve fully open, fully closed position with a lock hole, to ensure that the valve is in the correct position.
4, stem anti fly structure: the stem as download type to prevent pressure flying, while after the fire, the formation of metal in contact with the valve stem seal, ensure.
Note: parameters are for reference only,?or?are not full. Valve can be used in accordance with the requirements of different pressure, material, caliber. Specific please contact?or?online advisory contact.
Mandatory
Mandatory
Mandatory
Mandatory

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