US 8,894,036 B2Granted

Hydraulic torrent control valve

AssigneeBermad Cs Ltd.

InventorZvi Weingarten

Life of this patent

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Abstract

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.

Claims6

Dependent claims

A snap seat for attachment to a valve body opening to provide a sealing surface against which a displaceable plug seals, the snap seat comprising:

an annular strip defining an annular sealing surface, said annular sealing surface being a frustro-conical surface encircling a central axis;
and
a grip skirt portion integrally joined to the annular strip such that an angle not greater than 90 degrees angle is formed between the grip skirt portion and the annular strip, the grip skirt portion having a plurality of slots that divide the grip skirt portion into sections,
wherein the snap seat assumes an initial state in which the annular sealing surface faces away from the central axis and the sections of the grip skirt portion are non-diverging, the snap seat being resiliently deformable so as to invert into a clamping state in which the annular strip is inverted so as to face towards the central axis and the sections of the grip skirt portion diverge for gripping an undercut portion of the valve body opening.

1 more element

Dependencies are inferred from the claim text.

Facts

Application: 13/691,870Filed 3 Dec 2012 · division
Priority: 7 Jun 2010
Published: US 2013/0146800 A113 Jun 2013
Granted: 25 Nov 2014
Term ends: Not estimatedThe source records don’t support an estimate.

Classification12 codes

F16K 37/0008
Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given:…
F16K 1/427
Valve seats: attachment of the seat to the housing by one or more additional fixing elements
F16K 7/17
Arranged to be deformed against a flat seat: the diaphragm being actuated by fluid pressure
F16K 17/0453
With an obturating member having at least a component of their opening and closing motion not perpendicular to the closing faces: the member being…

Family

Application12/794,786Parent of this division · filed 7 Jun 2010
US 2013/0146800 A1Pre-grant publication · published 13 Jun 2013
US 2011/0297255 A1Published application
US 9,068,664 B2Related patent
US 8,894,036 B2This patent

From the US filing history. Foreign family members aren’t listed.