私人影院做爱视频,岛国女优av高清在线,我和亲妺婷婷在浴室作爱经过,女人和拘做受全过程免费,成人无码区免费AⅤ片WWW软件,亚洲AV无码国产成人久久强

current location: Home   >> News >> Company news

Four-way ball valve features

Four-way ball valve has the following features:

1, small fluid resistance: the ball and the valve body of the connection pipe section is equal, and the ball channel is connected by an arc, medium through the ball is, the fluid resistance is small.

2, good sealing performance: the seat is made of PTFE material with certain elastic deformation and high strength, which ensures the stability of the valve with good sealing performance.

3, long service life: valve core and light see the neck material USES austenitic stainless steel, PTFE seat material, can achieve good corrosion resistance, prolong the service life of the valve.



信丰县| 松阳县| 江安县| 卢氏县| 德清县| 长治县| 临邑县| 灯塔市| 梅河口市| 县级市| 安岳县| 久治县| 元朗区| 香格里拉县| 房山区| 朝阳区| 施甸县| 青岛市|