Shut-off valve comprises a spherical, rotatable closure element and two axially displaceable sealing rings which can be pressed onto the spherical element. The valve casing contains two beams fitting closely around the spherical valve closure element and each having in the central plane (parallel to...
There are various conventional switch-locating mechanisms of fluid passages, such as faucets and valves of water pipes, gas pipes and oil pipes. Such switch is generally rotationally forced to drive a gate disposed inside the valve for opening/closing a fluid outlet. Such rotational measure is of...
The main disadvantage of a slotted liner is that effective well stimulation can be difficult because of the open annular space between the liner and the well. Similarly, selective production (e.g., zone isolation) is difficult. Another option is a liner with partial isolations. External ...
knowing the location of the main water shut off valve is as crucial as having a fire extinguisher within reach. This seemingly insignificant piece of information can make all the difference when faced with a plumbing emergency, such as a burst pipe or a leaking faucet that refuses to yield. ...
a stop slide valve, can be blocked off, and wherein, in such a for the purpose of a leak test of the main line blocked house connection tube, which in turn, for example, on one side by means of the house-side main purely the direction of the operating method can be shut off, fro...