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.Oct 15» w45-
J. F. MELICHAR ETAL
2,409,220
SUM? SELECTOR VALVE
'Filed May 13, 1943
2 Sheets-Sheet 1
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F5, ìâââ.
J. F. MELICHAR EI‘AL
2,409,220
SUMP SELECTOR VALVE
Filed May 13, 1945
2 Sheets-Sheet 2
mazze
Patented Oct. l5, 1946
STTS
2,409,220
SUM? SELECTOR VALVE
.Joseph F. Melichar and Wilton Margrave,
Cleveland, Ohio, assignors to The Parker Appli
ance Company, Cleveland, Ohio, a corporation
of Ohio
Application ,May 13, 1943, Serial No. 486,862.
(Cl. 251-121)
The invention relates to certain _new and use~
ful improvements in sump selector valves .adapted
for `use in fuel supply tanks of aircraft in the
manner
disclosed
in
U.
S.
Letters
Patent
2
vision of `10W pressure areas at the inlet side of
the respective ball valve tending to Vhold the ball
valve against the baffle during slight tilting of the
valve structure.
A further object of the invention is to provide
in a valve structure> combination of the character
stated a vvalve seat including dual seating por
2,332,007, issued to Arthur L. Parker October
19, 194'3.
In an airplane the fuel supply tank is mounted
tions, one of which is very sensitive and e'fñcient '
ñxedly relative to the frame structure in such po
when the ball engages and is seated thereagainst
sition that the longitudinal axis of the tank will
be disposed substantially horizontallyv when the ll) with a very slight force, such as when the angle
airplane assumes level ilight. When the air
plane is at rest on the ground, the tank is tilted
upward so that the fuel lies at the back end of
the tank, and the tank will remain tilted until
the airplane has reached the desired altitude and
assumes a level flight. During flight, the tank
will be tilted more or less as the airplane moves
upward or downward and during banking in the
making of turns. In order to avoid the delivery
of air into the engine fuel lines as a result of un«
covering of a line inlet in the tank due to tilting
of tilt of the valve structure is very slight or
when the suction pull is very slight, and the other
of which is a bumper seat portion eñicient when
the ball engages and seats thereon at greater
seating forces and which is so disposed relative
to said >sensitive seat as to prevent wedging _of `the
ball in the `sensitive seat.
A further object of the invention is to Aprovide
in a valve structure `of the character stated and
including a valve seat having a Iirst engaged
sensitive seat portion and a second engaged
bumper seat portion, »a seat mounting or keeper
of the tank, there is provided a plurality of fuel
ring having a flange portion so disposed relative
dispensing pipes which terminate adjacent the
to said sensitive and bumper seat portions -as to
ends of the tank, or at widely spaced points in
constitute a third engaged metal seat portion or
the tank, with which pipes is associated a sump
stop shoulder eiîective to limit compression of the
selector valve mounted for tilting movement with
ball valve on the sensitive and bumper-seats.
the tank and which is so disposed that gravity~
With the above and other objects Ain `View `that
actuated valves therein will control the dispens
will hereinafter appear, the nature of the inven
ing pipes whereby fuel will be supplied solely
from the pipe leading to the lowermost position 30 tion will be more fully understood by following
the detailed description, the appendedclaims and
in the tank during its tilting movements. It is
the several views illustrated `in the `accompanying
a purpose of the present invention to provide a
novel improved form of sump selector valve
drawings.
adaptable for the above stated uses.
An object of the invention is to provide an
improved seat and ball valve combination so con~
structed and arranged that the ball valve will
have proper engagement with the seat, to cut 01T
the now of the liquid fuel, upon slight tilting
of the valve casing from the horizontal when the
seating component, of the ball valve is consider
ably less than the weight of the ball valve.
A further object of the invention is to provide
a Vbaille between the inlet port and `the ball valve
effective to direct the incoming fluid around the
ball Without impinging fully and l,directly against
the ball, thereby preventing chattering of the und
seated ball.
A further object of the invention is to pro-ì
vide a baffle of the character stated having open
ings therein for directing incoming fluid around
the ball and in which there is included a central
opening of limited area designed to cooperate
with the first mentioned o-penings and the ad
jacent valve inlet opening in avoiding thev pro
In the drawings:
Y
Y
-
-
“
‘
,
,
Figure 1 is a central longitudinal section `illus
trating the improved valve structure.
Figure 2 Ais a central vertical cross section of
the valve structure illustrated in Figure 1, the
center baffle being shown in elevation.
Figure 3 is a vertical cross Section of the valve
casing per se taken through one ball chamber
thereof and looking toward the center of the
casing.
Figure 4 is an enlarged fragmentary sectional
view somewhat diagrammatically illustrating the
manner in which a ball valve contacts the oo
operating ring seat.
Figure 5 is a vertical cross .section of one ¿of the
ring seats per se.
Figure 6 is a face View of the ring seat illus
50
trated in Figure 5.
Figure 7 is a face view of one of -the inlet bañles.
The improved sump selector valve comprises
a casing 5 which is generally ,cylindriiorm in
shape and open at both ends. The casing isipro
2,409,220
3
4
vided centrally of its length with an outlet open
related to the bumper shoulder seat I9 as to act
ing 6 which is disposed perpendicularly with re
as a supplement therefor effective whenever tilt
spect to the longitudinal axis of .the casing and
ing of the casing at an exaggerated angle forces
opens downwardly in the manner clearly illus
the ball against the seat I9 with sufficient pres
trated in Figure 1. Inlet openings are provided CII sure to deform the shoulder I9 and permit the
in the respective ends 1 of the casing, and within
ball to come against the rigid stop I1 and there
each end of the casing is formed a ball valve
by positively limit movement of the ball into the
chamber 8, and a central now chamber 9 being
seat. From the foregoing it will be apparent that
disposed in the center of the casing between said
each ring seat equipment provides a ñrst con
ball chambers and communicating therewith
tacted very flexible line contact seat 2 I, a second
through circular openings IU.
'
contacted less yieldable bumper seat I9 and a
It is to be understood that the respective ends
third .contacted rigid stop seat I1.
1 of the casing are adapted to be connected by
An annular recess 24 is provided beside each
ducts or pipe lines with the fuel tank of an air
mounting ring I5 for the purpose of removably
plane, said pipes or ducts opening into the tank
receiving a snap ring retainer 25 effective to
at spaced points so that one at least thereof al
secure the ring I5 in place in ‘the manner clearly
Ways will be connected with the fuel supply
illustrated in Figures 1 and 4 of the drawings. A
whereas the other may be open at times to air
clearance 26 is provided in the casing wall in
in the tank in Ithe manner clearly disclosed in
each chamber 8 so as to render the respective
U. S. Letters Patent 2,332,007, issued to Arthur L.
recess 24 accessible in a manner for facilitating
Parker, October 19, 1943, and hereinbefore re
removal of the respective snap ring retainer 25.
ferred to. 'I'he outlet opening 6 is adapted to be
See Figure 3.
connected by a pipe or conduit with the booster
At its central portion, directly over the outlet
pump usually provided, and through said pump
opening 6, the casing 5 is provided with an open
with the engine to be supplied with fuel.
N) Ul ing 21 which is closed by a removably mounted
The casing wall in which each fuel supply or
closure cap 23, said cap being secured fluid-tight
Y seat opening I0 is formed is provided endwise
against a recessed gasket 29 in the manner clearly
with a seat recess I I which is undercut as at I2 to
illustrated in Figures 1 and 2. The cap includes a
provide an overhanging shoulder, the inner edge
center boss or plug extension which depends in
corner of which is rounded as at I3 for a purpose
that will later become apparent. A valve seat
ring I4 formed of rubber or other equivalent
yieldable material is mounted in each recess II,
being removably held therein by a metal mount
the casing opening 21, said boss being provided
with a depending center baffle 3| which is slightly
wider than the diameter of the casing openings
i0 and is rounded as at 32 at its lower extremity
on an arc the radius of which is slightly greater
lng or keeper ring I5 having an inwardly directed 35 than the radius of said openings I0, The baille
keeper flange I5. It will be observed by refer
3I is provided with a centrally longitudinally dis
ence to Figures 1 and 4 of the drawings that the
posed slot 33 and a pendulum member 34 is piv
flange I6 of the keeper ring is so disposed as to
otally mounted as at 35 in said slot. The pendu
provide a rigid seating shoulder I1,
lum member is provided at its upper end with
One of the yieldable seat rings I4 is illustrated 40 shoulders 36 effective to limit swinging movement
in detail ln Figures 5 and 6 of the drawings from
of the member in the central vertical plane in
which it will be observed that each ring includes
cluding the axis of the casing, and at its lower
an obtusely angularly recessed face portion I8
end the pendulum member 34 is provided with
which results in the provision of a line contact
endwise extensions 31 which include arcuate end
bumper seat I9 and a relatively thin very flexible
faces 38 disposed along the center of the casing
lip 20 which projects transversely inwardly’ be
in position for contacting the ball valves 22 in the
yond the diametrical limit of the respective open
manner clearly illustrated in Figure 1. It will
ing I0. Each flexible lip is disposed to present a
be observed by reference to Figure 1 that the
line contact seat shoulder 2| Itoward the re
pendulum member extensions are so spaced that
spective ball chamber 8. Within each ball cham 50 they will engage with the ball valves 22 and pre
ber 8 is provided a plurality of circumferentially
vent seating of both balls at any given time.
spaced ball guide ribs 23 which are disposed par
In order to prevent direct, full force impinge
allel the axis of the casing and serve as guides for
ment of the incoming fuel with the ball valves 22,
the ball valves 22 rollably mounted in the respec
an inlet baffle 39 is mounted at each end of the
tive chambers 8. By reason of the particular
casing in the manner clearly illustrated in Figure
mounting of the balls and the formation and
l. Each inlet baille includes a convex center por
mounting of the respective ring seats in the man
tion conforming generally to the curvature of the
ner hereinbefore described and clearly illustrated
adjacent portion ofthe respective ball valve, and
in Figures 1 and 4, a ball valve rolling against the
each baille 39 is mounted in an adapter 4I thread
cooperating ring seat will ñrst engage in line
ably mounted in the respective end of the casing
contact with the thin flexible lip 20 as at 2I.
5 and having a recess therein for receiving the pe
If the tilt of the .casing is very slight the liquid
ripheral edge of the baille 39, the metal defining
seal will be effected by line contact of the ball
the recess being upset as at 42 to retain the baille
only with the lip 20, but when Ithe degree of tilt
in assembly with the respective adapter, Each
of the casing is suñlcient to cause the ball to de
bañle is equipped with outer openings disposed
flect the lip 20 to a suflicient extent, .the ball will
adjacent the diametric limit of the adjacent ball,
next engage the less readily yieldable bumper seat
and also with a center opening 44 of limited area
shoulder I9, engaging in line contact therewith.
which permits a limited amount of direct im
This contact with the bumper seat supplements
pingement of the incoming fuel with the respec
the seat sealing contact of the ball and avoids
tive ball valve 22 but not objectionable full force
movement of .the ball far enough into the respec
impingement such as would~ cause the ball to par
tive seat to effect a wedging thereof within the
take of violent uncontrolled movements in its
lip 20. It will be observed by reference to Figures
chamber. The provision of the particular ar
1 and 4 of the drawings that the rigid seat shoul
rangement of apertures 43 and 44 avoids the pro
der I1 provided on the keeper ring flange I6 is so
vision of low _pressure areas at the points 45 in
2,409,220
5
the respective ball valve ,chambers which would
tend to hold the ball against the respective baille
during slight tilting of the casing.
In use, when the valve casing iis tilted so as to
cause one ball valve 22 to roll toward the respec
tive end baffle 39 and the other ball valve to .roll
toward the respective ring seat lâ, the ball 22
rolling toward said seat ring will first .have a
light engagement with the very flexible lip 2B,
engaging the same inline contact as at 2l in the
manner indicated in Figure 4. If the tilt of the
6
»departing from the spirit of our `invention or the
scope of the appended claims.
We claim.:
'
1. ïn :a valve, the combination of a Yring seat
of resilient yieldable material and a valve mem
lber movable into and out 4of engagement „with
»said ring seat for controlling passage of :duid
therethrough, said seat including a first engage
able thin benda‘ble annular lip engageable by
the valve 'member when moved against the ring
seat and leiîective to provide an ei‘ñc'ient Y»line
lcontact seal at light pressure contacts lof the
casing is very slight the Whole seal Will be effected
valve member with the seat ring, and a spaced
by the vline contact at _2l and the ball Will remain
second engageahle annular yieldable bumper `seat
out of contact with the bumper seat i9. If the
portion engageabie by the valve member after
tilt lof the .casing is sufficient to .cause the ball
a bending of the lip by -valve member engage
to gravitate against the lip ’20 with suiñcient pres
ment and eñe'ctive to provide an eiiîcient seal
sure to deñect >or bend the very flexible lip in
at 'heavier pressure contacts oi the valve mem
the manner indicated in dotted lines in Figure 4,
ber with the ,seat ring and to limit the amount
the ball will
engage in line contact .at lâ with
the bumper seat, As previously described, the lip 20 of displacement by 'bending of the first engaged
20 is more readily yieldable `than the bumper seat
lip by said valve member.
I9. If the degree of tilt of the casing is consid
2. In a valve, the combination of a ring seat
er-able the ball will .slightly deiorm the bumper
o1” resilient yieldable material and a valve Aball
seat i9 Aas Well as the very flexible lip 2Q, but .the
movable into and out of engagement with said
bumper seat will assure against movement lof the
ring seat for controlling passage of ñuid there
ball into the lip far enough to wedge in lor dam
through, said seat including a ñrst engageable
age said lip. Avoidance of any Wedging of the
annular thin lip disposed transversely with re
ball in the lip 2i] is additionally assured by pro
spect to the axis of the ring seat and engageable
vision of the positive stop sea-t Il which Will be
by the valve ball when moved against the ring
come `eîi’ective after slight deformation of the
seat and effective to provide an eñicient seal at
bumper seat i9 to positively limit movement of
the respective ball 22 into the seat opening lil.
The rounding of the inner edge portion of the
light pressure contacts of the valve ball With the
seat ring, and a spaced second engageable an
shoulder I2 as at i3 assures against damaging
of the thin flexible lip 2li by any pinching action, -
valve ball and effective to provide an eñìcient seal
at heavier pressure contacts of the valve ball
with the seat ring and to limit the movement of
the ball Within the said lip and thereby assure
against Wedging of the ball in the seat ring.
and flexure of the lip in >engagement with the
ball valve can be continuously effected without
danger of damaging the lip by bending against
a sharp opposing edge portion. The end baiiles
39 serve to direct the incoming liquid fuel around
the ball valves 22 so as to prevent objectionable
full direct impingement or” the incoming liquid
fuel With the ball valves such as would cause
chattering of the valves. The limited area cen
tral openings provide just enough direct center
contact cf the incoming liquid fuel with the ball
valves 22 to avoid provision of objectionable low
nular bumper seat portion engageable by the
3. In a valve, the combintaion of a ring seat
of resilient yieldable material and a valve ball
freely rollable in a generally horizontal direc
tion into and out of engagement With -said ring
seat for controlling passage of fluid therethrough,
said seat including a ñrst engageable annular
thin lip disposed transversely with respect to
the axis of the ring seat and engageable- by the
valve ball when moved against the ring seat
and eiîective to provide an efficient seal at light
ball valves against the inlet baffles.
pressure contacts of the valve ball with the seat
The partition or center baille 3l, proportioned
ring, >a spaced second engageable annular bumper
in the manner stated, covers the valve seat open
seat portion engagea-ble by the valve ball and
ings lû in a manner for diverting or guiding
effective to provide an eñicient seal at heavier
the incoming liquid fuel passing either ball valve
pressure contacts of the valve ball With the seat
22 laterally and downwardly through the outlet
ring and to limit the movement of the ball Within
opening 5. In this manner, incoming fuel Will
said lip and thereby assure against sticking of the
not impinge upon the seated ball valve and tend ,
ball in the seat ring, and a rigid seat shoulder
to unseat the same. While the center baille 3|
disposed in cooperative relation to said bumper
thus prevents the incoming liquid fuel passing
seat for being engaged by said ball and pro
viding a third engageable non-yielding seat
one unseated ball valve from directly engaging
(il)
deñnitely limiting movement of the ball valve
and eiîecting an unseating of the other seated
ball valve, yet it does not obstruct the proper
into the yieldable ring seat.
and free flow of the incoming liquid fuel through
4. In a valve, a ring seat of rubber or equiva
lent resilient yieldable material disposed with its
the unseated ball valve associated seat to the
axis in a generally horizontal position, a ball
outlet opening 6. The shouldering of the ring
valve, and means supporting and guiding the
seat I4 in the manner clearly illustrated in
ball for free movement along the axis of the
Figure 5 for engaging under the undercut or
seat ring for cooperation therewith, said ring
overhanging shoulder l2 serves to support the
having an annular thin lip disposed transversely
thin flexible lip 2li against being deformed
with respect to the axis of the ring seat and
radially by ball contact or ring pressure.
engageable by the ball and alone eiîective to form
t is to be understood that the form of our
an eiìcient seal when only slight gravitational
invention herein shown and described is to be
or other pull is exerted on the ball, and a spaced
taken as a preferred example of the same and
annular bumper seat portion engageable by the
that various changes in the shape, size, and
ball when greater than slight gravitational pulls
arrangement of parts may be resorted to Without
perssure areas at ¿l5 Which would tend to hold the
:2,409,220
7
are exerted on the ball thereby to supplement the
seal effected by said lip.
5. In a valve, a ring seat of rubber or equiva
lent resilient yieldable material disposed with its
.
Y 8
the casing is provided with an annular recess
disposed beside the flanged metal ring, and in
which there is included a snap ring removably
mounted in said annular recess and removably
securing said metal ring in place in the ring seat
axis in a generally horizontal position, a ball
valve, and means supporting and guiding the
ball for free movement along the axis of the
receiving recess.
seat ring for cooperation therewith, said ring
having an annular thin lip disposed transversely
formed of resilient material and having a plu
rality of annular seat edges, said edges being of
with respect to the axis of the ring seat and
engageable by the ball and alone effective to
form an eiiîcient seal when only slight gravita
tional or other pull is exerted on the ball, and
a spaced annular bumper seat portion engage
able by the ball when greater than slight gravita
tional pulls are exerted on the ball thereby to
supplement the seal effected by said annular
thin lip, said bumper seat portion being dis
posed adjacent said lip so as to be engaged by
l9. In a valve, the combination of a ring seat
different diameters and flexible and resilient and
one said edge being more flexible than the other,
and a freely rolling ball valve rollable by gravity
into and out of engagement with said ring seat
and effective for engaging in seat sealing contact
with the more flexible seat edge upon only‘slight
gravity action rolling thereof toward said ring
seat and with both said seat edgesA upon more
pronounced gravity action rolling thereof toward
said seat.
the ball after a predetermined limited move 20
10. In a valve, the vcombination of a ring seat
ment of the ball within said lip so as to assure
formed of resilient material and having a plu
against wedging of the ballA within said annular
thin lip.
rality of concentrically arranged and successively
engageable first and second seat edges, said seat
6. In a valve, a casing having a cross wall hav
edges being yieldable and resilient and said first
ing a circular fluid passing opening therein and
seat edge being more yieldable than said second
a ring seat receiving recess, a ring seat of rubber
seat edge, and a freely rolling ball valve rollable
or equivalent yieldable material mounted in said
by gravity into and out of engagement with said
recess, a ball valve, means for guiding said ball
ring seat and effective for engaging in seat sealing
for movement along the axis of said opening
contact with said l'irst seat edge upon only slight
toward and from said ring seat, said seat having 30 gravity action rolling thereof toward said ring
an annular thin lip extending transversely at said
seat and with both said first and second seat edges
opening and inwardly beyond the diametric limit
upon more pronounced gravity action rolling
of said opening and engageable by the ball and
thereof toward said seat ring.
alone effective to form an eñìcient seal upon light
11. In a valve, the combination of a casing
pressure contacts of said ball, and a spaced an- structure having a flow passage therethrough sur
nular bumper seat portion engageable by the ball
rounded by a seating portion, a valve member
upon heavier pressure contacts of the ball with
movable between lpassage sealing and passage
said seat, and a flanged metal ring for removably
opening positions and including a seating portion
retaining the seat in said recess, the ring ñange
opposing the first mentioned seating portion, one
being disposed in cooperative relation to said lip 40 said seating portion having a seating ring of
and bumper seat for being engaged by the ball
resilient yieldable material presented'for engage
after it has successively engaged the lip and the
ment with the other seating portion and including
-bumper seat in the order stated and compressed
a first engageable thin bendable annular lip effec
the bumper seat a predetermined limited amount,
tive to provide an efficient line Contact seal at
thereby to positively limit the degree of deforma
light pressure contacts of the ring with said other
tion of the seat by the ball and prevent wedging
seating portion, and said ring also including a
of the ball in said lip.
spaced second engageable annular yieldable
7. A structure as defined in claim 6 in which
bumper seat engageable with said other seating
the ring seat receiving recess is undercut so as
portion after an amount of bending of said lip
to provide a shoulder disposed to overhang a por 50 and effective to provide an eilicient seal at heavier
tion of the seat from which the thin annular lip
pressure contacts of the ring with said other seat
extends and support the lip against inward dis
ing portion.
~
` tortion.
JOSEPH F. MELICHAR.
8. A structure as defined in claim 6 in which
WILTON MARGRAVE.
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