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A two-way flow control ball valve device 2011-11-23
A two-way flow control ball valve device having an improved valve seat for an O-ring seal so that there is no binding or restriction on the movement of the ball under high pressures.
The technical characteristics of semi double eccentric ball valves 2011-11-22
The use of semi-double eccentric ball valve eccentric, eccentric ball and seat, stem for rotational movement in the joint trajectory self-centering, the more closed off during tightening, completely o
Ball valve with cartridg 2011-11-21
A ball valve has a valve body having a chamber, aligned inlet and outlet passages providing flow therethrough, and an access passage communicating with the chamber.
History of the vacuum pump 2011-11-18
The predecessor to the vacuum pump was the suction pump, which was known to the Romans. Dual-action suction pumps were found in the city of Pompeii.
Ball valves for different types 2011-11-17
There are five general body styles of ball valves: single body, three piece body, split body, top entry, and welded.
Three-way and four-way ball valves 2011-11-16
Three-way ball valves have an L- or T-shaped hole through the middle. The different combinations of flow are shown in the figure.
Certification requirements lining ball valve 2011-11-15
Valve calibration and control fluid flow, often in the manufacturing and chemical processes.
The incorrect proposition / proposal 2011-09-23
Does
this policy pay off in business? You bet! Carnegie gives an example in
which he lost his voice and could not speak during an important
meeting. The client's CEO spoke for him, taking his positi
