Double plug double discharge ball valve

Double clogged double discharge ball valve works: Double clogged double discharge ball valve seat supported by a two floating ball in the media under the pressure of the ball itself will have a certain displacement, resulting in pressure to the seat ring seal outlet, Produce a sealing effect.

Power cable operation and maintenance

First, the characteristics <br> <br> cable line refers to the use of the cable line conveying power cable line, which mainly consists of a cable body, an intermediate cable connector, composed of a top end of the electrical line, further comprising