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Патент USA US2406178

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Aug. 20, 1946.
ì v
Filed Sept. 2. 1945
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Amli-unm Hl-I,V/
Patented Aeg. 2o, 1946
e 2,405,178
fris-o iis-rar
with aothrough conduit whereby the pres- ~
_èufethe‘reiin'may be controlled.
" -e Íöf Athe objects yof "__t'his invention ifs to _ pro
vide‘aiiui'd pressure valve 'whíchwill quire but
a light spring for the closure >óf ’th’eÀvalve a1"
though substantial pressures may be controlled.
Another‘objeotvof this_invention is to provide
_a Ífiui'd 'pressure .valve lin l"which the spring Vpres
sureffor _clos'i?gthe valve lwill be'sufñçiently light
"'so'that't'he valve seat .may belrriade of nonf-metal
lic 'plastic material which may be of a resilient
Another object of the inventionis to provide
'a' valve of such construction'that'the spring pres
sure which is applied to the valve may be varied
by adjustment.
Another object'of `this inventionis tov?provide
a -valve of vsuch„construction that the fluid pres
sure which presses upon the -valve mayîbe nicely
vcontrolled by selection of thepaijts which control
„the pressure. on the valve, _the control being by
relative sizing of the parts..v
_ _. Y
»Another object of the invention is to provide
a valve which may ,be applied _over an existing
conduit by merely tapping the same and sliding
the valve into position.
With these and other objects in view, _the inven
tion consists of certain novel features> of con
„struction as Will .be more , _fully _described _and
particularly pointed out >in _the appended claims.
fIn the- accompanying drawing:
.. yIEÍig. 1 is a central sectional View
Fig. _2_is asectionalview _of one of the body
"riens which carries the-Valve Seat;
Fig. 3 is a central sectional view of a modified
vform of valve;
~ willi
iterfappearfahd'is'of a size'g?eater
35~trianîthe tube' f_l.
_ ,'Ainpvable valve" designated Àglffsliówn alone
in Fig, 5) yis provfded‘wipn a nèa‘d‘portióniia‘v'î?g
ai' seating surface a22 :for ì engagement _with V`_the
' v„seating surface 20 of thevalve seat. Thewvalvle
l» ¿Fig 4 is a sectional view of the valve seat pro- ' 40 isup'rovided with a recess’23 forthe reception-'of
_a softpacking 24 which engages'the tubular'part
vided in the valve of Fig. 3;
Fig.> 5 is, a Asectional View' of >the valve `which
_ll and' provides ~'a- ‘seal therewith. ‘The-inner
is Vcommon to _the form shown in Figs. _1 _and 3;
diameter‘of this valveis of‘a'size' to'be slidably
Fig: 6,isa sectional View. oi a lstill different -‘ guided 'on ‘the part Il'havingadiameter"d"ant1
~`modified form of valve constructed on the princi- 45
plesof _the other showings,
_ Fig», .7 isa sectional View of a different modified
form of the invention,
YIn proceeding with this invention I expose _an
this diameter becomes ltheljkeffectivediameterifor
"pressure purposes ofthe valve,"‘and directs-¿the
’valve in_'its'aëiialçinòvernent 4ïttìward"arid‘ from its
fseat. u @Hspring‘2`5‘engaggès` the lvalve and;î an“ alî?t
4rannular valve to fluid _pressure but restrict the y50 f, ment washer 26 which _inî turn -engagesthe' pack
Aing _[9 towurgethe valvetowardvfseating position
suriaceto which Vthepfessure 'is‘applied sdthat a
“an‘d’at” the "Sametime "applieslpressui'e'on tl'îe
iight-weight ‘épring"w'i11""‘eiöse the valve even
packing I 9 to expand it to form >a seal. The
abutment IB for the packing I9 may be adjusted
is applied is accomplished by the varying of the 55 to in turn more tightly compress the spring or to
though the pressure of the fluid is substantial;
The control of this area to which the pressure
, 4.
relieve some of the pressure thereon as may be
valve surface 42 being at the same angle with
reference to the aXis of the valve. The diam
eters d and d’ of the valve seat and the conduit
still however control the area of the valve which
The diameters d and d' are diameters of cylin
drical surfaces having the same axis as the axis
of the valve. 'I'he diameter d’ is less than the
diameter d so that the sealing surface 22 of the
valve 2| extends radially beyond the sealing sur
face 20> (that shown being inward) of the valve
seat, thus exposing the valve to pressure in an
area which will be represented by the differen
Will be exposed to the fluid pressure andcon
sequentlywill reflect the total pressure applied
to the valve by the ñuid which pressure must be
balanced by the spring to control the opening
Y of the valve when a predetermined pressure in
10 -the conduit or body part Il exists.
ï In Fig. ’IA I have shown a, modification differ
tial ‘of-the, diameters d and d’. AIt Will be aD
parent that this area may be changed by chang
ent from Fig. 6 in that the recess 45 for the pack- '
ing the diameter d of the seat to expose more." j ing 46 isin the body part Il instead of in the
or less of the valve. In the construction shovvjn4 „movable Valve and the valve 41 is a solid annular
in Fig. 1„the diameter d’ Will be maintained Athe 15 structure. In this case d’ Will define the line
same as conduit Il which presentsA a „guiding“ „of _contact of the packing 46 with the inner di
surface for movement of the’valve along the _said _ _
conduit _I I. If the diameter dis 'made greater,
a greater surface area or differential between d ~
and d’ will occur while if the diameter d is made
smaller asmaller >differential d minus d’ Will be
present.- When" certain factors areV knovvnsuch
astsubstantially the' maximum> pressure which is
ameter of the valve._
-By this"arrangement a, very small area upon
Which-the ñuid presses may be provided sov that
avery light spring maybe used and thus a non
metallic surface which would ordinarily be dis
torted under >great pressure may be utilized for
"avalve of this character. Also, rvvhereythe valve
Íde'sired in the Yconduit or tube part `'I l of the
Lseats with a light pressure, Ya lseal against leak
„bodyjand theA value o_f the spring pressure which 25 age of fluid maybe maintained 'Without injury
'maybe used, and which may be a small amount
Vtothe sealing surfaces which might occurV under
with reference tothe pressure of the conduit tube,
high spring pressure. ‘
" "
_the diameter may be calculatedso that the proper“
dilîerential (d-d’) VWill be present on the valve
1.Y In a Valve device automatically operated by
:surface 22 so that the valve may be opened by 30 a predetermined rise in iluid pressure, a conduit
the fluid pressureinrthe conduit at the proper
'comprising _an open endedv tubular member pro
point. ' The diameter d_may be arranged sorthat
vided with a plurality of circumferentially
With,a fluid pressure in the conduit of `3,000 lbs.`
aligned openings therein, a valve body surround
la Vspring pressure of 'ten to >thirty pounds may be
ing said conduit and provided with an annular
'utilized and the areaso selected as to overcome
seat surrounding and spaced from said >conduit
vthis spring by a control'of the diameter d. The
part I0 in Fig. 2 may be bored to present the di
-and adjacent said openings, _packingsr engaging ~
'the body and conduit on either side of the said '
In Fig. 3 I have illustrated avalve similar in
openings and seat t0 sealñuid from escape from
the body,A said body having a port'leading there
many respects _to the'valve _shown in Figs.y 1 and 2l
from, an annular valve slidably engaging said
ameter _d desired.
' ’
except that the body part here designated 39.32' ‘conduit and having a surface engaging said an
(comparable tothe part' IU of Figs.„1 and 2) is
nular seat, a'packing round in cross section en
provided With a recess 3| „ for the reception’ of a
gaging saidvalve and >said conduit sealing the
ring 32 which _presents a sealing surface 33, in
escape of fluid between said valve' and said' con
place of that'äsealing surface 20 which is in 45 duit, the adjacent surfaces‘of said annular seatV
tegrauy formed With the Dart lll` as heretofore? »'f fandgsaid'conduit being'so selected'as to present
provid_ed._V This sealing ring 32 will be held in
position against the ñange 34 bythe bodypart
35 _threaded as at 36vinto engagement with the`
portion 3_7A of the body 30 and held in desired
position of rotary adjustmentrby the set screw
` §38. In' the showing in Figs. 3 and 4 this annular
.i y‘ring 32jvvill be fof a resilient soft material so that
,i f_pressure bythe rotary 'part 35 willVV also cause it
to laterally expand iand provide a seal with> the
tube Il of the body. By this arrangement the
_diameter d (see Fig. 4) or inner portion‘of the
i -s_,e'alírtg surface Will control the area which is ex- ` Y
a predetermined area'ofthe valve to the pressure
fluid ‘and a spring urging said valve to engage
said seat against said pressure fluid With a pre
determined -force.
2. In a valve device automatically operated by
ra'predetermined rise in fluid pressure, a con
duit comprising an open ended tubular member
provided with a vplurality of circumferentially
aligned openings therein, a valve body surround
ingsaid conduit and provided with a, removable
annular seatY vsurrounding saidl conduit and ad
_jacent said openings and sealing with said con
yposed to thel fluid Von Athe valve 2|, „This con
duit onV one side of said openings, a» packing en
_ struction añords a simple means Voffadjusting the v60 gaging the vbody and conduit on the otherrside
i varea exposedfto the ñuid’b'y interchanging one '
of the rsaid openingsV to _sealfluid from escape
ring 32 for another which may be of a different
from the body, said body having a port leading
diameter d. .The other parts of this valve shown
therefrom, an annular valve slidably engaging
, in Fig. 3 are the same and function _the same as .
said conduit and Íhavinga surface engaging said
. rthose shown yin Figs. land 2 and therefore carryvr 65 annular seat, a round packing between said valve
4and conduit, the adjacentsurfaces of said an
Y the . same reference characters.
In Fig. 6 I have villustrated adifferent mod- `
` 3 _iñcationsimilar to» Fig. _1 butin Which the valve
nular seat andwsaid conduit beingso selected as
to present a predetermined area _o_f the valve to
1 -seat’ instead Vof extending atright angles to the
the pressure ñuid and a spring urgingsaid valve
. _axis of the valve >is tapered as at 40 While the
'__to_ YengagesaidV seat against said pressure ñuid
. valve designated'lll, is' provided with a tapered ‘
_With 'a' predetermined force.V
. _ surface 42 to engage this‘se'at 40, b'oth seat and
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