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Publication numberUS1864443 A
Publication typeGrant
Publication dateJun 21, 1932
Filing dateOct 3, 1930
Priority dateOct 3, 1930
Publication numberUS 1864443 A, US 1864443A, US-A-1864443, US1864443 A, US1864443A
InventorsKhun Albert M
Original AssigneeKhun Albert M
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Flood tide and backwater valve
US 1864443 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)

June 21, 1932. A. M. KHUN 1,864,443



This invention relates to valves and particularly to an improved flood-tide and backwater valve, the object being to provide animproved construction which will not readily clog up and which will automatically open and close as conditions demand.

Another object of the invention is to provide a flood-tide and backwater valve wherein the valve member consists of a plate acting as a flap valve with floats coacting therewith to open and close the same as the level of water increases or decreases.

An additional object of the invention, more specifically, is to provide a valve of the kind specified wherein the mountings may be readily adjusted to always give a proper seating of the valve.

In the accompanying drawing Figure l is a sectional view through Figure 2 on the line 1--1;

Figure 2 is a longitudinal vertical sectional view through Figure 1, the section being taken on the line -22 of Figure 1.

Referring to the drawing by numerals, 1

indicates an outlet pipe and 2 an inlet pipe, while 3 indicates a valve casing adapted to receive incoming sewerage which is discharged through chamber 5 into the pipe 1. The valve may be used at a number of places as, for instance, in cellars or other low places, but it is particularly adapted to be used in main sewers discharging into a river or other receiving place. When discharging into a river it often happens that during flood-tide 85 the water backs up through the sewers into the various cellars and even into the streets of a city or town using the sewers.

To prevent this it is designed to use a valve similar to that shown in the accompanying drawing at or near the outlet of each of the sewers, so that there can be no back-flow of water through the sewers.

As indicated in Figure 1 the valve casing 3 is provided with a chamber 5. A removable 5 valve seat 6 is arranged at the juncture of inlet pipe 2 and chamber 5, the valve seat being screwed in place and adapted to coact with the flap valve 7. This valve is a slightly cupped disc pivotally mounted so as to swing to the dot-and-dash position 8 when the sewerage is passing through the device in the usual manner. I I

Whenjthe water begins to back up into chamber .5 from outlet pipe 1 it will cause the float 37 to rise upwardly and eventually move valve 7 to the position shown in F igure 2, whereupon the valve is completely closed. When'the level of water in pipel lowers the water in the chamber 5 will naturally lower and, consequently, the float 37 will move downwardly and gradually open valve 7 so that the sewerage or water will freely flow from chamber 5. In case some water should back up and close valve 7, said valve will open in case the pressure of the GI sewerage in pipe 2 is greater than the pressure of water in outlet pipe 1, thus permitting the discharge of sewerage even before the flood has subsided.

From Figure 2 it will be noted that float 37 is provided with a rearwardly extending arm 39 from which a pivotal pin 40 extends, the said pin being held in place by adjustable supports 41 and 42, said supports being screwed into the side walls 43 of easing 3. V

In a similar manner bearing members 44 and 45 are provided for the journal pin 46, which journal pin extends through the upper end of the arm 47 of valve 7. 7 Arm 47 is provided with forwardly extending fingers 48 and 49, the inner surface of these fingers being rounded and forming with the main part of arm 47 a socket 50 into which the elongated head 51 of arm 39 fits. The parts I are so proportioned and positioned that when the chamber 5 is substantially filled with water, float 37 will rise and will act on fingers 48 and 49 and on arm 47 for closing valve 7. As soon as the water is lowered, float 37 by reason of its weight will move downwardly and will act on fingers 48 and 49 and on arm 47 for positively opening valve 7. It will also be noted that any backward rush of water will assist the float b reason of the, fact that the rush of water Wlll mechanically push the valve 7 toward its seat, thus hastening the action of the float.

I claim 1. A flood-tide and backwater valve ineluding a casing having an inlet and an out no let, a flap valve for closing said inlet, means for pivotally supporting said flap valve, means connected with the flap valve for presenting a pair of spaced fingers a pivotally mounted float arranged in the casing, and an arm extending from said floatand provided with a large rounded end fitting between said fingers and acting to move the flap valve open when the float is swung downwardly and for moving said flap valve closed when said float is swung upwardly. r

2. A flood-tide and backwater valve including a casing having an inlet and an outlet, a valve member for closing said inlet, a valve i member arm connected to said valve member for causing the valve member to function, said valve member arm being provided with apair of facing curved fingers positioned to form a socket therebetween, a pivotally mounted float and a float arm extending from said float, said float arm at its free endhaving an elongated head positioned in said socket and acting on said fingers to move the valve :member arm for opening and closing said valve member.


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3270770 *Nov 29, 1963Sep 6, 1966Dare Products IncFloat controlled valve assembly
US4503881 *Dec 28, 1983Mar 12, 1985Vecchio Fiore MAutomatic counterbalanced sewer valve with float closure
US5406972 *Jun 10, 1994Apr 18, 1995Coscarella; GabeBackwater valve
US5462075 *Dec 7, 1992Oct 31, 1995Persson; MatsMethod and device for controlling a flow of fluid
US5894858 *Apr 18, 1997Apr 20, 1999Schluesselbauer; JohannDevice for shutting off the feed or discharge pipe of a mobility separator
US6305411 *Oct 23, 2000Oct 23, 2001Ipex Inc.Normally-open backwater valve
US6318404 *Dec 21, 2000Nov 20, 2001Gabe CoscarellaBackflow valve
US6446665Dec 20, 2000Sep 10, 2002Gabe CoscarellaBackwater valve
US6499503Dec 21, 2000Dec 31, 2002Gabe CoscarellaBackflow valve
US7044165 *Aug 15, 2005May 16, 2006Premier Tech Technologies Ltd.Outflow regulator for a gravity-fed liquid outlet
US8096318Jan 17, 2012Gabe CoscarellaValve flap for a plumbing valve
US8578961Jul 13, 2009Nov 12, 2013Gabe CoscarellaLow profile backwater valve
US9097363Aug 20, 2010Aug 4, 2015Gabe CoscarellaLow profile backwater valve with lock
US20060032544 *Aug 15, 2005Feb 16, 2006Premier Tech 2000 LteeOutflow regulator for a gravity-fed liquid outlet
US20080196775 *Apr 29, 2008Aug 21, 2008Gabe CoscarellaValve flap for a plumbing valve
US20100078083 *Jul 13, 2009Apr 1, 2010Gabe CoscarellaLow profile backwater valve
US20150107698 *Oct 21, 2014Apr 23, 2015Gabe CoscarellaLow profile overbalanced backwater valve
EP0195439A2 *Mar 19, 1986Sep 24, 1986Bernhard KesselAnti-flood valve
U.S. Classification137/445, 137/448
International ClassificationE03F7/00, E03F7/04
Cooperative ClassificationE03F7/04
European ClassificationE03F7/04