Hydraulic torrent control valve
AssigneeBermad Cs Ltd.
InventorZvi Weingarten
Life of this patent
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AssigneeBermad Cs Ltd.
InventorZvi Weingarten
Estimating the term…
A hydraulic control valve actuated by a diaphragm's integral spring whose thicker part acts with greater force to close the diaphragm and plug unit of the valve and whose thinner part may complete the closing motion so that the integral spring may weaken faster than linearly in relation to displacement of the diaphragm and plug unit. A snap seat supporting the plug may include a seat portion and a grip skirt portion integrally joined at an acute angle. A bracket and sliding guide may guide a helical rotor touching an indicator. Movement of the diaphragm and plug unit may rotate the helical rotor and the indicator without the indicator rising out of the valve. The cover may have an internal control passage in communication with a base of the valve to allow the cover to be installed horizontally and vertically conveniently and without disconnecting the control tubing above the valve.
A hydraulic control valve, comprising:
An indicator mechanism, comprising:
An assembly for an indicator, comprising:
An indicator mechanism, comprising:
A snap seat for supporting a plug of a diaphragm and plug unit of a valve, comprising:
A cover for a control valve, the valve having valve control equipment situated above the valve, the cover comprising:
A hydraulic control valve having a first drain hub for draining an upstream side of the valve and a second drain hub for draining a downstream side of the valve, the first and second drain hubs having an elbow shape allowing the first and second drain hubs to swivel, the first drain hub and the second drain hub capable of being connected to one another at a 3-way valve whereby in a first position the upstream side drains, in a second position the downstream side drains and in a third position neither side drains.
Dependencies are inferred from the claim text.