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Патент USA US2122189

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«Fume 2» i933»
M. WARD
'
`
2,122,18
FLUSH VALVE
Filed Nov. 1o, 193e
INVENTOR
M/CHA¿ WA „l
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2,122,189
Patented June 28, 1938
ATENT GFFICE
UNITED STATES
2,122,189
FLUSH VALVE
Michael Ward, South Orange, N. J.
Application November- 10, 1936, Serial No. 110,055
2 Claims. (Gl. 137-93)
The upper portion of the wall 6 isv provided
This invention relates to ñush valves and
deals more particularly with the diaphragm type
of valve known as flushometer valve and is an
improvement on the structure shown in my ap
plication filed December 3, 1935, Serial No.
E)
52,626.
10
with an inreaching annular flange I2, Yand there
above, said wall is internally screwthreaded as
at I3.
Fitted to the body, there is provided a cover Ol
member I4 provided with external screw threads '
I5 for engagement with the threads i3. To in
The invention contemplates the provision of
an economically constructed, simple, and posi
tive acting valve comprising few parts which are
sure a leak-proof ñt between the body and its
cover member, a gasket, such as shown at I6,
readily and quickly assembled.
may be provided.
Another contemplated feature of the inven
tion resides in the no-vel construction of the
auxiliary tilting valve employed in the device.
A further contemplated feature resides in the
main valve being integrally formed with the
clamp the peripheral portions of a-fiexible dia
seat for the auxiliary tilting valve.
_
The invention has for its further object the
provision, of novel means for equalizing the
pressures in the chambers to each side of the
diaphragm.
A still further vobject resides in the provision
of syphon preventing means to obviate the; possi
bility of back-syphonage from the sewage system
toV the fresh water supply» and thus effectively
. preventing contamination..
With the foregoing features and objectsv in
mind and many others which-Will later become'
apparent, the invention resides in the novel con
structional details and in their novel combina
30 tion and arrangement as illustrated in the. ac
companying drawing in which is depicted an
embodiment of the invention as at present. con
templated.
In the drawing:
Fig. 1 is a vertical cross-sectional View through
a flush valve showing therfeatures of the inven
tion.
Fig. 2 is a transverse sectional view through
the main valve sleeve.
Fig. 3 is an enlarged fragmentary sectional de
4:0
35.
10
r
The cover I4 is formed with an annular ring
surface Il which coacts with the flange I2 to
phragm I8, and in order to obtain a tight grip
ping of the diaphragm, the cover is provided
with a polygonally-shaped head I9 for accom
modation of a wrench or other like tool.
The lower portion of the cover I4, adjacent
the surface I1, is reduced in diameter so that
an annular chamber 29 is formed between the
threaded portion of the body and the mentioned
lower portion Vof the cover. Beyond the periph
eral edge of the diaphragm I8, the flange I2 is
formed with a bleed hole 2I which thus com
municates the chamber 8 with the annular 25
chamber 20.
,
.
The mentioned reduced portion of the cover
I4 is provided with a horizontal bore 22 in which
is fitted a cylindrical plug 23 having a central
bleed hole 24 and provided with a rounded teat
25 projecting into the chamber 2B.
Projecting
into the chamber 26 formed between the cover
I4 and the diaphragm, there is provided a ball
cage 21 having a shank 28 also ñtted into the
bore 22. The cage is provided with a freely mov 35
able ball valve 29, a valve seat 30, a passage 3l
connecting the cage chamber with the bleed
hole 24, and a port 32 communicating the cage
chamber and the chamber 26. This assembly
may have any angular disposition with respect 40
tail View showing the improved syphon breaking'
to the bleed hole 2l.
means.
The main valve sleeve 33 is formed with a
valve portion 34 having a sliding fit in the up
Fig. 4 is a similar-view> of an alternate _form
of pressure equalizing means.
Describing the invention, as embodied 'in the
4.5
drawing, in greater detail, the body 5 is pref
‘erably of cast metal and is formed with an outer
circumferential wall Ii and an inner wall 1 con
K
per portion of the wall ‘I and with three guide
members 35 which afford equalized guiding of
the valve sleeve in its movement within the
sleeve wall "I, The upper portion of the valve
sleeve is reduced in diameter as at 36 and over
centrically disposed therein to provide an annu
50 lar chamber 8 therebetween and a flow passage
this reduced portion is positioned the centralr
portion of the diaphragm I8 which is clamped
The body casting is formed with a water inlet
I0 communicating with the chamber 8 and with
a water outlet I I in alignment with the flow pas
55 sage 9.
The mentioned reduced portion is upwardly ex
tended as at 38 to form the seat for the auxiliary
valve disc 39.
9 centrally disposed of the body 5.
to the valve sleeve by means such as the nut 3l.
In the present instance the valve disc ispref 55
2
2,122,189
erably made of non-metallic material and is
housed in a cup 55. The valve stem lll, which
passes through the central passage ¿l2 of the
valve sleeve 33, is formed with a threaded shank
43 having engagement with the disc holding cup,
human consumption, it is essential that no re
verse flow be started from the outlet 63 to the
inlet line l0. This at times occurs, whether due
to suction or to the establishment of a syphon
action. It is for the purpose of preventing this Ul
and with a shoulder portion ¿lil having an abut
îng face for retaining the valve disc 39 in its cup.
The cup 55 is formed with a central projec
reverse flow that the ball valve 29 is provided.
Any reduction in pressure in the chamber 3 will
ordinarily cause a commensurate reduction in
tion 45 to act as a pilot for the coil compression
pressure in the chamber 265 with the resultant
spring ¿l5 which projects into ’a recess seat ¿il
lifting of the diaphragm from its seat.
in the cover member ld.
The lower end of the valve stem ¿il is formed
with a shoulder ¿38 which serves to support a
sleeve 139 movable with the stem and slidably
mounted thereon.
,
The lower portion of the valve sleeve 33 may
be threaded as at 50 for the reception of a ring
5l. A desired rate of flow through the passage
52 may be had by providing a ring of suitable
diameter relative to the diameter of the men
tioned passage.
The valve is provided with an operating handle
52 having a cam portion 53 disposed within a
bonnet 54’. which is clamped to the body 5 as by
means of the nut 55 threadedly engaged with
the cylindrical body projection 56. The handle
cam 53 engages the disc portion 5l” of a sliding
stem 5S adapted for movement in the guide
block 59 which is clamped between the bonnet
5@ and the p-rojection 53 by the nut 55.
Packing E@ is provided around the stem 58,
said packing being housed in a seat in the guide
block 50 and retained in position by a gland 5l.
A compression spring 52 is disposed between the
disc 5l and the gland 5| to serve the dual func
tion of retaining said gland in place and for
maintaining the stem 58 out of contact with the
sleeve 139 until the handle 52 is moved.
,
The operation of the valve is quite well-known
and briefly is as follows: When the handle is
moved, the cam 53 moves the stem 58 to engage
the sleeve [i9 and thus tilt the valve disc 39 off
its seat 38. Water from the chamber 25 will
then pass into the outlet pipe 53 via the passage
42. The release of water from the chamber 25
now allows the water pressure in the chamber
8 to lift the diaphragm I8 and thus the sleeve
valve 33. Fresh water from the inlet ID now
pours through the chamber 8, over the top oi’
the wall "I, and through the centralpassage 9
into the outlet pipe 53. At the same time water
is passing through the bleed hole 2l, into the
annular chamber 2li, through the bleed 25 and
passage 3l, into the ball valve cage 2ï, and out
of the port 32 into the chamber 25. The rate
of ñow into the chamber 25 is relatively slow, it
requiring anywhere between 9 and l2 seconds to
fill the chamber 25 depending upon` conditions.
During this time the ñow of fresh water into the
60 outlet -continues and the lower end of the sleeve
¿i9 moves with the diaphragm and with the valve
sleeve to a point above and out of engagement
with the stem 53. This permits the valve disc
39 to again seat itself on its seat 38 to stop dis
CD charge of water from the chamber 2S. As this
chamber fills and the pressure therein equalizes
with the pressure in the chamber 8, the dia
phragm moves down to seat on the top of the
4 wall l and thus breaks the flow from the cham
ber 8 into the outlet pipe B3. Upon release of
the handle 52, the stem will withdraw to allow
the sleeve 49 to drop to its initial position on
the shoulder 48.
Since ñushometer valves are placed in the
ref fresh water supply li. ne which is also tapped for
How
ever, any tendency to reduce the pressure in the
chamber 25 when the valved disc 59 is seated
Vwill cause the ball 29 to be sucked against the
seat 35 and thus to seal the pressure in the
chamber 25. Thus it will be evident that the
greater the syphoning force on the chamber 8,
the more tightly will the diaphragm seat on the
rim of the wall 1.
As seen from Figure 4, should syphon break.
ing means
be unnecessary, or should other
syphon breaking means be employed, the ball
valve may be omitted and merely a small orifice
25a provided in the skirt portion of the cover ill.
Note should be made of the extremely simple
construction of the ñush Valve as herein dis
closed; of the ease with which it may be assem
bled; of the lack of sensitively adjustable parts;
and of the efficient manner of its operations.
The present disclosure does not exhaust the
structural possibilities and it is conceded that
many changes within the scope of the invention
as contemplated may well be made by skilled
persons. Hence, the prior art, rather than this
speciñc disclosure, should form the basis for de
termining the scope of the invention as claimed.
lI claim:
1. In a ñushometer valve having a cylindrical
wall concentrically disposed to form an annular
water inlet chamber; a pressure balancing cham
ber, a diaphragm between the pressure balanc
ing chamber and the inlet chamber, an in
reaching annular ñange on which the outer pe
ripheral margin of the diaphragm rests, an
internally screw-threaded portion above the an
nular flange, a cover member having external 45
screw threads for engagement with said thread
ed portion, an annular ring surface on the bot
tom of said cover for cooperation with the flange
to clamp said peripheral margin of the dia
phragm between it and the flange, the lower por 50
tion of said cover being reduced in diameter to
provide an annular chamber between the thread
ed portion of the body and the reduced portion
of the cover, the outer circumference of the dia
phragm being substantially coextensive with the 55
outer circumference of the reduced end of the
cover, said flange having a bleed hole there
through located beyond the peripheral edge of
the diaphragm to communicate the inlet cham
ber with the annular chamber and said reduced 60
portion of the cover having a bleed hole there
through to communicate the annular chamber
with the pressure balancing chamber.
2, In a flushometer Valve having a cylindrical
Wall concentrically disposed to form an annular 65
Water inlet chamber; a pressure balancing cham
ber, a diaphragm between the pressure balanc
ing chamber and the inlet chamber, an inreach
ing annular ñange on which the outer periph
eral margin of the diaphragm rests, an inter 70
nally screw-threaded portion above the annular
flange, a cover member having external screw
threads for engagement with said threaded por
tion, an annular ring surface on the bottom of
said cover for cooperation with the flange to 75
2,122,189
clamp said peripheral margin of the diaphragm
between it and the flange, the lower portion of
said cover being reduced in diameter to provide
an annular chamber between the threaded por
tion of the body and the reduced portion of the
cover, the outer circumference of the diaphragm
being substantially coextensive with the outer
circumference of the reduced end of the cover,
said flange having a bleed hole therethrough lo
10 cated beyond the peripheral edge of the dia
phragm to communicate the inlet chamber with
the annular chamber and said reduced portion
of the cover having a bleed hole therethrough to
communicate the annular chamber with the
pressure balancing chamber, a valve sleeve slid
3
ably fitting within the cylindrical wall, the up~
per portion of the valve sleeve being reduced in
diameter to provide a shoulder, said reduced
portion being externally threaded and extend
ing through the center of the diaphragm, a nut
cooperating with the sleeve threads to clamp
the diaphragm between the nut and the shoul
der, a portion of the sleeve extending upwardly
beyond the nut and having a rounded edge to
provide a seat for an auxiliary valve disc, and
an auxiliary valve disc releasably held against
said seat and manually operated means to un
seat the auxiliary valve disc to reduce the pres
sure in the balancing chamber.
MICHAEL WARD.
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