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Патент USA US2410960

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Nov. 12, ‘1946.
2,410,960
G. PqBUNN
HIGH TEMPERATURE VALVE
‘Filed Nov. 25, 1943
Sheets—Sheet' 1
52
'/
/ I. / /
/k
63
FIG. 6
INVENTOR
GE
RGE P.BUNN
8%!»
i
A 1
f RN
5
'
N9v.12, 1946.
G.>IP.IBUNN
' I
2,410,960 _
>HIGH TEMEERATURE VALVE
Filed Nov. 23, 1945
2 Sheets-Sheet '2
INVENTOR
05005 P. auuu
Patented Nov. 12, 1946
2,410,960
warren “STATES rarest orgies
2,410,960
HIGH TEMPERATURE VALVE
,
George P. Bunn,‘ Bartlesville, Okla", assignor to.
Phillips Petroleum Company, a corporation of
Delaware .
1
Application November 23, 1943, Serial No. 511,441
17 Claims. (Cl. 251-20)
This invention relates to valves for controlling
the ?ow of all kinds of ?uids, especially valves
operating under high temperatures, and it has
particular relation to valves handling ?uids con
taining catalysts in re?neries under temperatures
of from about 600° F. up to 2600“ F. and higher.
It is still more closely related to valves providing
for streamlined ?ow and resistance to 'corrosion
in which the packing of the valve operating means
leading tothe exterior is protected from the high
temperature of the stream of hot ?uid.
_
The temperatures used in many chemicalproc
esses keep getting higher and higher as time goes
by. As better yields may be obtained by these
high temperatures it is imperative that valves be
obtained to handle high temperature ?uids, as
-
2
temperature changes will not causemisalignment
of the valve head but in which the head will al
ways close on the seat.
Another object is to provide a valve in which
the packing is protected by being out of the stream
of ?owing ?uid, by radiation~of heat away from
the packing, by de?ection of the ?uid from the
packing or by any one or more 01’ these inventive
ideas.
.
.
Another object is to provide such a valve in
‘which rotary seating motion of the valve head
can be accomplished.
Other objects are to provide novel features of
design and construction of parts which result in
a valve which is cheap from a relative standpoint,
,- which is e?icient in operation, capable of giving
the present valves are not standing up on the job.
long service without repair, and which will carry
The catalysts used in butadiene plants are poi
out all of the above objects. ‘ '
soned by oxidizable metals, so the present. require
Numerous further objects and advantages will
ments for the metal parts are for special steel 20
be
obvious to those skilled in the ‘art upon reading
alloys. These alloys unfortunately are generally
the following speci?cation, looking at the accom
very brittle, especially at 11000 and up, and may
panying drawings, and studying over the ap
register only 1 to 2 foot pounds on the Charpy
pended claims.
test as compared to v'7 pounds and over for cast
In the drawings:
iron. My valve is not limited to the use of alloys 25 Figure 1 is a cross sectional view of a valve em
however.
bodying the invention; the cross section being
taken through the axis of the ?uid conducting
The present packing materials that can be used
in stu?ing boxes to resist the escape of the cata
lyst and hot ?uid all fail soon at temperatures
above 600° F. This use of brittle metal and pack
_ pipes.
Figure 2 is a cross sectional view of the ellips
oidal valve head and its operating spider, taken
along the line 2—2 of Figure 1 looking in the
direction indicated.
ing material which cannot stand the temperature
requires the invention of a new type of valve.
This results in a ?eld of invention having entirely
Figure 3 is an elevational view of the housing
diiferent problems and greater limitations than
exist in designing a valve for ordinary liquid such 35 plate containing the valve seat with parts in cross
section, the cross section being taken along the
as cold water. Obviously however, my valve may
line 3+3 in Figure 1 looking in the direction in
also be used successfully in handling cold ?uids
just as Well as hot ?uids. By proper proportion
_ Figure 4 is a cross sectional view of an alterna
ing of parts there is no upper limit to the high
temperature of ?uids handled so far as the pack 40 tive form of streamlined housing‘ on a reduced
scale which may be substituted for the 'corre-, '
ing is concerned.
-.
sponding element in Figure 1 as will be explained
The principal object of my invention is to de
below.
.
sign the valve so that the packing for the metal
Figure
5
is
a
perspective
view
of a modi?ed form
parts moving the valve will not be subjected to
the high temperature of the ?uid ?owing in the 45 of operating gear which may be placed on the
ends of the studs in place of the screws shown
in Figure l.
'
Another object of the invention is to devise a
Figure
6
is
a
fragmentary
perspective
view of
streamlined valve in which the ?ow of ?uid, will
the type of ring
dicated.
conduit.
'
.
_
-
gear designed to cooperate with
occur with a minimum of turbulence and erosion
of the valve seat.
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>
.'
Another object is to provide a valve in which
unequal expansion between the valve seat and
disc will not interfere with proper operation even
Figure 5.
50
-
.
Figure 7 is a cross sectional fragmentary view
showing the operative relationship of the 'parts
illustrated in Figures _5 and 6.
j
Figure 8 shows a modi?ed form of the ring gear
though parts may be made of brittle material.
Another object is to provide a valve in which 5.5 and pinion gears of Figure 1 and illustrates an ex
ternal drive by a motor.‘
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'
2,410,900
3
they may be made separately and welded to
gether or otherwise assembled.
Rim 2“! is provided with a plurality of studs
29 which may be integral therewith but prefer
Figure 9 shows a modi?ed form of the valve
head in which rotary seating- motion is incor
porated in cross section.
'
In Figure 1, pipes II and I2 are transporting 5 ably are secured thereto by welds 30. The num
a corrosive high temperature material, although
ber- of studs again is immaterial but preferably
of course my valve is adapted to work with low
enough of them should be provided to prevent
temperature neutral materials which are much
jamming of the device in operation.
more easily handled. To conserve the heat in
Studs 29 are provided with threads 3i at their
the materials pipes ii and i2 may be covered
ends and studs 29 pass through stuffing boxes
10
with heat insulating cylinders l3 and I4, although
32 containing packing rings 33 which may be
this heat insulation may be dispensed with and
provided with a gland 34. Stu?lng box 32 pre
is not involved in my invention.
The heat in
vents the escape of the ?uid from the casing
along the surface of the rod or stud 29.
sulating material may be held in place by metallic
bands l5, although any other suitable holding
. means may be employed.
There are three major features to Figure 1.
The ?rst is the provision of streamlined ?ow of
the ?uid material and the location of the pack
ing material in a secluded spot away from the
streamlined ?ow. The second is the provision
In order to operate rods or studs 29, various
forms of operating means may be provided but
in the modi?cation shown in ‘Figure 1, I prefer
to use internally threaded pinions 35, one thread
ed on each screw threaded portion 3i, all of the
20 pinions being rotated by a single internal ring
gear 36 which may be turned by means of hen
dles or capstan bars 31 on the exterior thereof.
proper operating temperature. And the third
Obviously other forms of handles may be pro
is the construction of the valve head out of brit
vided, or gear teeth could be provided on exte
tle material in such a way as to make it easily
rior of ring gear 36 for drive by a motor, or a
operated and not subject to being rendered in 25 . motor
may be positioned and provided with a
of heat transfer means to cool the packing to its
e?’ective by temperature changes.
There are
other important ‘advantages in Figure 1 which
will be obvious from its future description.
gear to drive the internal teeth of 36, the motor
being spaced around the periphery from the pin
ions 35.
In order to control and to stop the ?ow of the
Figure 8 shows another form of ring gear 39
hot ?uid material in pipes H and I2 a valve gen 30 which is mounted interiorly of the pinions 35
erally indicated as i6 is provided between them.
and is driven by a motor 39 which may drive a
Valve It comprises two casings l1 and i8 which
separate pinion or which‘ may, as shown, drive
are'secured to pipes ii and I2 by any suitable
one of the pinions 35 by means of a sleeve, se
connection whatsoever, screw threads l9 and 20
cured to the pinion, the armature of the motor
35
respectively being shown. The two halves of the
in this instance being made hollow to allow the
casings l1 and I8 may be secured together by
nuts and bolts 2! and preferably the joint be
passage therethrough of screw threads 3|. Many
tween them is packed by a gasket of some sort
Returning to Figure 1, the ring gear may be
other types‘ of drive may be provided.
such as 22. A valve head 23 is adapted, as will
held in place and guided byi?ange 49 which is
be explained further, to seat on a valve seat 24 40 shown integral with housing [8 and ?ange 4i
forming a, portion of the bore of casing is. ~
which is shown bolted to [8 by means of bolts .
Valve 23 is shown as a prolate ellipsoid so that
42.
streamlined laminar flow may occur around it
Other means may be substituted for screw
without turbulence. To cooperate with the shape
of the valve head, the casing i1 is provided with
a semi-ellipsoidal inner surface 25. While cer
tain streamlined shapes have been shown, it is’
obvious that theshape Of parts 23 and 25 may
be modified without invention by following engi
neering aerodynamic or hydraulic design and
still be within the scope of this invention as long
as they allow the ?uid to diverge around head 23
and converge to the rear of the head to pass
threads 3|, and Figure 5 shows a block 43 and
diagonal threads 44 cut therein for cooperation
with the structure of Figure 5 which shows a ring
gear formed internally with teeth 46 which are
adapted to cooperate with teeth 44 as shown in
50 Figure 7 where valve housing 41 is provided with
~stuii'ing box 48, guide ?ange 49 and removable
?ange 50. The operating rod 29 provided with
gear block 43 is moved in and out of stumng box
43 as ring gear 45 is rotated in its channel be
. through seat 24 and into pipe l2 with a minimum 8 55 tween 59 and 49 and as teeth 46 on the ring gear
amount of turbulence. A rough double cone
urges teeth 44 in or out through a guide hole
shape of part 23 may ._be su?icient in some cases. ‘ in ?ange 50.
The head 23 may be made in the popular tear- - _
Figure 4 shows a modi?ed form of casing II
drop shape.
,
which is designated as casing 5|. Casing 3| dif
As seen in Figures 1 and 2, head 23 is supported
from casing H by not being provided with‘
in position by a spider 23, the spider consisting 60 fers
cooling fins 52 shown in Figure 1. This is meant
of a rim 21 and a plurality of spokes 23. ‘While
to show that cooling ?ns 52v may be eliminated
- it is possible to obtain some operation with one
from the structure of Figure 4 if desired. The
spokeand two or three spokes will give good op
?ns 52 may be made radial to add strength to the
eration I show four spokes although of course ' 65 housing l'l if desired, and may be placed on hous
?ve or more spokes may be employed. The num
mg i8 also if desired.
ber of spokes involved is not a limiting factor
' Casing ‘I also differs by being provided with
to ‘my invention. Spokes 23 may be straight
projections 33 which form a continuation of the
if they are materials of suitable coefficients of
ellipsoidal surface 25 of Figure l which is desig
temperature expansion. I may however have the 70 nated as ellipsoidal surface 54. Projections l3
spokes provided with an S-bend as shown in Fis
allow a space 33 for the passage of the arms 23
ure 2 to provide for inequalities of expansion
of the spider of Figure 2. No attempt is made to
without warping of the valve head from its seat
seal around these arms, in fact space II has to
ing position as will be explained under the opera
be ‘made wide enough for temperature distortion
tion of thedevicebelow. I prefer to cast the
of the entire ‘structure in Figure 1, the ends of
head, spokes and rim integral although "0! course
it
2,410,900
53 preferably being located a little short 01' sur
face 24 to prevent warping or the parts and
breakage of the relatively brittle materials em
ployed, but may contact 2% if desired.
In Figure 9 a modi?ed form of head 231s
shown. Spokes 28 are formed integral with a
head at which guides a seating element 51. The
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6 ,
to wipe its way into a tight seat with seat 24,
while the outside 01.’ I8, 51 is shown as a simple
cone head obviously the ‘same principle may be
non-inventively applied to the more stream
lined heads, such as head 23 in Figure l. The
outer surface} of 58 and 51 may be perfectly
streamlined in expanded position, and when in
rim 58 of the cylindrical end of‘head 56 may be‘
contracted position need/not be streamlined as
bent or otherwise equipped to secure element 51
there is no ?ow as the valve is closed when 58
from coming out. Element 51 has a screw 10 and 51 are telescoped together.
'
threaded bore 59 threaded on a screw-threaded
Minor changes in design and construction of
stud 6t which is preferably integral with 56. A
parts may, of course, be made without going outspring 6! urges 5B and 57 apart. 58 may be ' - side of the scope of my invention. The principal
threaded to to if brittle metal is used.
features of my invention, which consist in keep-'
The operation of the valve is very simple and 15 'ing
the packing at a suitable temperature, avoid
believed almost obvious from the drawings. In
ing warping and other deleterious temperature
Figure 1, the valve is shown in closed position.
changes and other features are all set‘ forth in
To open the valve, bars 31 are turned rotating
the following claims and my invention is only
pinions 35 and screwing the pinions on screw 3|
limited by these claims.
.
to drive rod 29 to the left by reaction against 20
Having described my invention, I claim:
plate 6!. Ellipsoid 23 moves out until it is cen
1. In a high temperature valve the combina
trally located between seat 2d and surface 25,
tion comprising a housing having a ?uid conduit
This provides a streamlined ?ow around the el
and anon-?uid conducting portion therein, a
lipsoid with a minimum of turbulence as the flow
seat in said conduit, a valve head mounted for
passes over lip 82 and space 63. The ?ow is 25 sliding motion in said housing to close and open ;
preferably from left to right so that ?uid pres
said seat, a plurality of stu?ing boxes in said
sure will aid in seating the valve, but obviously
non-?uid conducting portion, aplurality of valve
the valve will work with flow in the opposite
head operating means secured to said valve head
direction. Space 63 being a quiet backwater and
having radiation to the air through casings I‘! 30 and extending through said stu?lng boxes to the
exterior of said housing, and means to slide said
and ld,,which radiation may be increased by fins
52, it is much cooler in the vicinity of packing
33. Depending on the viscosity of the ?uid and
its thermal conductivity, proper proportion of
valve head operating means in said stu?lng boxes
in unison, whereby any binding is obviated, com
prising screw threads on the operating means,
parts may be made by non-inventive engineering 35 internally threaded pinions threaded on said
screw' threads, an annular gear having teeth
calculations so that while the temperature of the
meshing with all of the pinions simultaneously,
?uid ?owing over ellipsoid 23 and out pipe I2
may have a temperature of 1400" F. to 1600° F. .
and means to rotate said annular gear, each
of space 63 than as shown for low viscosity and
2. In a, high temperature valve the combina
tion comprising a housing having a ?uid conduit
and a non-?uid conducting portion therein,v a seat
in said conduit, a valve head mounted for sliding
stu?lng box having its respective axis parallel to ~_
and higher, the temperature of the packing 33
may still be below 600° F‘. The distance between 40 the axis of movement of the valve head whereby _
the valve head operating means may slide therein
the axis of the valve and the stuf?ng boxes 82
'
to slide the valve head.
may be much greater in proportion to the width
high heat transfer characteristics of certain
?uids, or for greater temperature di?erences.
As the structure in Figure 2 expands clue to
temperature, the valve head 23 will not spring
away from or toward seat 24 but instead will
rotate a small amount as arms 28 lengthen. v
‘motion in said housing to close and open said
seat, a plurality of stu?ing boxes in said none '
?uid conducting portion, a plurality of valve head
On the other hand, if arms 28 do not undergo 50 operating means secured to said valve head and
extending through said stu?ng boxes to the ex
terior
of said housing, and means to slide said
The operation of the structure of Figure 4 is
valve head operating means in said stuffing boxes
similar to that of Figure 1. When the housing
in unison, whereby any binding is obviated, com
ll of Figure 1 is removed and housing 5| sub,
prising screw threads on the operating means,
stituted therefor, the abutments 58 help keep the
internally threaded pinions threaded on said
?uid in streamlined flow, and because of this it
screw threads, and an annular gear having teeth
may. be possible to reduce the diameter of space
too much expansion they may be made radial. '
88 and/or to reduce or eliminate cooling ?ns 82
as there will not, be as much heat transfer
meshing with all of the pinions simultaneously,
each stu?lng box having its respective axis paral
. through minor amounts of turbulence as when 60 lel to the axis of movement of the valve head
whereby the valve head operating means may
the housing I‘! is used.
The operation of Figures 5, 6, and '7 is merely
that ring gear 65 is rotated causing teeth‘ 66 to
mesh with teeth dd and drive the rod 2% in or
out of stumng box t8 operating the spider 26 in
the same manner as in Figure l.
The operation or motor 89 in Figure 8 is be
lieved obvious as it rotates gear 35 which drives
ring gear 38 and treated pinions 3E.
The operation of Figure 9 is the same as Figure
1 except that as spokes 28 urge head 56 to the
seat, seating element 5'5 is forcibly rotated by
screw 86 which is threadedin bore so with a
very steep thread. Spring St is compressed and
slide therein to slide the valve head.
3. In a high temperature valve the combina
tion comprising a housing having a ?uid conduit
and a non-?uid conducting portion therein, a
seat in said conduit, a valve head mounted for
, sliding motion in said housing to close and open
said seat, a plurality of stu?ing boxes in said
non-?uid conducting portion, a plurality of valve
head operating means secured to said valve head
and extending through said stuiiing boxes to the
exterior of said housing, and means to slide said
valve head operating means in said stu?lng boxes
.“in unison, whereby any binding is obviated, com
prising a gear block on each operating means and
the seating element 51 given a rotating motion 75 an annular gear having teeth meshing with all
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2,410,960
the gear blocks simultaneously to move the oper
ating means in unison, and means to rotate said
annular gear, each stu?lng box having its respec
tive axis parallel to the axis of movement of the 5
waive head whereby the valve head operating _
means may slide therein to slide the valve heat.
4. A valve for high temperature ?uids com-V
supporting said valve head by arms. rods on said
spider in said stagnating chamber extending to
the exterior of said housing. stu?‘lng boxes at
portions of said stagnating chamber remote from
and cooler than said conduit‘ and sealing said
housing to said rods, screw threads on said rods,
a gear threaded to each rod, means for rotating
all of said gears in unison comprising a hand
wheel having external radial handles and in
streamlined ?uid conducting conduit there
through and 8- ?llid stagnating, chamber therein, 10 ternal gearing meshing with each of said gears,‘
slots in the walls of said conduit communicating _
whereby upon rotating said gears in the proper
~prising in combination a housing having a
with said chamber, a streamlined valve head disposed in said conduit, a seating portion‘ on said
directions said seating portion contacts and
leaves said seat opening and closing said valve,
valve head, a portion of said conduit forming a
and means on said valve head comprising said
valve seat for said seating portion, a. spider in 15 seating portion for rotary wiping Contact with
said stagnating chamber supporting said valve
said seat upon closing of said valve, said rods
head by curved arms which rotate the valve head
being disposed parallel to the axis of movement
on heating extending through said slots, rods on
of said valve head at all times.
said spider in said stagnating chamber extending
7. A valve for high temperature ?uids com
to the exterior of said housing, stui?ng boxes at 20' prising in combination a housing having a
portions of said stagnating chamber remote
streamlined ?uid conducting conduit there
from and cooler than said conduit and sealing
through and a ?uid stagnating chamber therein,
said housing to said rods, screw threads on said
communicating with said chamber, a streamlined
rods, a gear threaded to each rod, means for . valve head disposed in said conduit, a seatingv
rotating all of said gears in unison comprising 25 portion on said valve head, a portion of said con
a hand wheel having external radial handles and
duit forming a valve seat for said seating portion,
internal gearing meshing with each of said gears,
a spider in said stagnating chamber supporting
whereby upon rotating said gears in the proper
said valve head by arms, rods on said spider in ,
directions said seating portion contacts and
said stagnating chamber extending to the exte
leaves said seat opening and closing said valve, 30 rlor of said housing, stu?lng boxes at portions or
and means on said valve head comprising said
said stagnating chamber remote from and cooler
seating portion helically splined to said valve
than said conduit and sealing said housing to said
head and spring pressed to an extended position
. rods, screw threads on'said rods, a gear threaded
for rotary wiping contact with said seat upon
closing of said valve, said rods being disposed
parallel to the axis of movement of said valve
head at all times,
5. A valve for high temperature ?uids comprising in combination a housing having a
streamlined ?uid conducting conduit therethrough and a ?uid stagnating chamber therein
communicating with said chamber, a streamlined
‘valve head disposed in said conduit, a seating
portion on said valve head, a portion of said con
duit forming a valve seat for said seating portion,
a spider in said stagnating chamber supporting
said valve head by arms, rods on said spider in
said stagnating chamber extending to the exte
rior or said housing, st-ui?ng boxes at portions
to each rod, and means for rotating all of said
35 gears in unison comprising a hand wheel having
external radial handles and internal gearing
meshing with each of said gears, whereby upon
rotating said gears in the proper direction said
seating portion contacts and leaves said seat
40 opening'and closing said Valve. Said rods being
disposed parallel to the axis of movement of said
valve head at all times.
8. A valve for high temperature ?uids com-_
prising in combination a housing having a
45 ?uid conducting conduit therethrough and a
?uid stagnating chamber therein, slots in the
walls of said conduit communicating with said
chamber, a valve head disposed in said conduit,
a seating portion on said valve head, a portion
of said conduit forming a valve seat for said
of said stagnating chamber remote from and 50 seating
portion. a. spider in said stagnating
cooler than said conduit andsealing said housing
chamber supporting said valve head extending
to said rods, screw threads on said rods, a gear
through said slots, rods on said spider in said,
a threaded to each rod, means for rotating all of,
stagnatlng chamber extending to the exterior of
said gears in unison comprising a hand wheel 55 said housing, screw threads on said rods, a gear
having external radial handles and internal gear
threaded'to'each rod, means for rotating all of
ingmeshing with each of said gears, whereby
said gears in unison, whereby upon rotating said
upon rotating said gears in the proper direc
gears in the proper directions said seating por—
and
leaves
4
.
tions'said seating portion contacts
contacts and leaves said seat opening and
said seat opening and closing said valve, and 60 tion
closing said valve, and means on said valve head
means on said valve head comprising said seat
comprising said seating portion helically splined
in: portion hellcally splined to said valve head
and spring pressed to an extended position for
\ rotary wiping contact with said seat upon closing <
to said valve head and spring pressed to an ex
tended position for rotary wiping contact with
said seat upon closing of said valve, said rods
of said valve, said rods being disposed parallel 65 being
disposed parallel to the axis of movement
to the axis of movement or said valve head at all .
01' said valve head at all times.
times.
'
9. A valve for high temperature ?uids com
6. A valve for high temperature ?uids com;
prising
in combination a housing having a ?uid
prising in combination a housing having a
conducting conduit therethrough and a ?uid
streamlined ?uid conducting conduit there
through and a ?uid stagnating chamber therein 70 stagnating chamber therein, slots in the walls
of said conduit communicating with said cham
communicating with said chamber, a stream
ber, a valve head disposed in said conduit, a
lined valve head disposed in said conduit, 9. seat
seating portion on said valve head, a portion of
ing portion on said valve head, a portion or said
said conduit forming a valve seat for said seating
oonduit forming a valve seat tor said seating
portion,’ a spider-in said stagnating chamber 75 portion.’ a spider in said stagnating chamber '
2,410,900
a
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i:
supporting said valve head extending through
said slots, rods on said spider in said stagnating
chamber extending to the exterior of said hous
ing, and means on said valve head comprising
said seating portion helically splined to said valve
head and spring pressed to an extended position
for rotary wiping contact with said seat upon
closing of said valve, said rods being disposed
parallel to the axis of movement of said valve
head at allv times.
said chamber, a valve head disposed in said con
duit, a seating portion on said valve head, apor
tion of. said conduit forming a. valve seat'for
said seating portion, and a spider in said stag
nating chamber supporting said valve head and
‘ .
10. A valve for high temperature ?uids com
prising in combination a housing having a ?uid
conducting conduit therethrough and a ?uid
means on said valve head comprising said seat
ing portion for rotary wiping contact with said
seat upon closing of said valve.
stagnating chamber therein communicating with
said chamber, a valve head disposed in said con
-
a spider in said stagnat
chamber supporting
said valve head extending through said slots.
14. A valve for high temperature ?uids com
prising in combination a housing having a?uid
conducting conduit therethrough and a ?uid
stagnating chamber therein communicating with
15
15. A valve for high temperatures comprising in combination a housing having a ?uid conduct
tion .01’ said conduit forming a valve seat for said
ing conduit therethrough, a valve head disposed
seating portion, a spider in said stagnating
in said conduit a seating portion on said valve
chamber supporting said valve head and means
head, a portion of said conduit forming a valve
on said valve head comprising said seating por 20 seat for said seating portion, a spider guided in
tion helically splined to said valve head and
said housing for moving said valve head ‘to and
spring pressed to an extended position for rotary
‘mm said seat, said spider comprising an outer
duit, a seating portion on said valve head, a por- ,
wiping contact‘ with 'said seat upon closing of
,uided portion and arms connecting said outer
said valve.
portion and said valve head, said arms being
11. A valve for high temperature ?uids com 25 generally spirally disposed outwardly from said
prising in combination a housing having a ?uid
valve head in the plane de?ned by said outer
conducting conduit therethrough and a ?uid stag
portion, and said arms being thicker in a direc
nating chamber therein, slots in the walls of said
tioncnormal to said plane than in said plane
conduit communicating with said chamber, a
whereby upon temperature changes the valve
valve head disposed in said conduit, a seating DOr 30 head will rotate as the arms change length and
tion on said valve head, a portion of said conduit
not be substantially translated relative to said
plane.
»
forming a valve seat for said seating portion, a
16. A valve for high temperatures comprisin
spider in said stagnating chamber supporting
said valve head extending through said slots, rods
in combination a housing having a, ?uid conduct
on said spider in said stagnating chamber ex 35 ing conduit therethrough, a valve head disposed
tending to the exterior oi! said housing, screw
in said conduit, a seating portion on said valve
head, a portion of said conduit forming a valve
threads on said rods, a gear threaded to each
seat for said seating portion, a spider guided in
rod and means for rotating all of said gears in
unison, whereby'upon rotating said gears in the ' said housing for moving said valve head to and
proper directions said seating portion contacts 40 from said seat, said spider comprising an outer
and leaves said seat opening and closing said
guided portion and arms connecting said outer
valve, said rods being disposed parallel to the
portion and said valve. head, said arms being gen
erally spirally disposed outwardly from said valve
axis of movement of said valve head at all times.
12. A valve for high temperature ?uids com
head in the plane de?ned by said outer portion,
prising in combination a housing having a ?uid
whereby upon temperature changes the valve
conducting conduit therethrough and a ?uid
head will rotate as the arms change length and
stagnating chamber therein, slots in the walls of
not be substantially translated relative to said
said conduit communicating with said chamber, .
plane.
a valve head disposed in said conduit, a seating
portion on said valve head, a portion of said con
duit forming a valve seat for said seating por
tion, a spider in said stagnating. chamber sup
porting said valve head extending through said
slots, and rods on said spider in said ,stagnating
chamber extending to the exterior of said-hous
'
-
17. A valve for high temperatures comprising
A in combination a housing having a fluid conduct
ing conduit therethrough, a valve head disposed
in said conduit, a seating portion on said valve
head, a portion of said conduit forming a valve
seat for said seating portion, a spider guided in
said housing for moving said valve head to and
ing, said rods being disposed parallel to the axis‘
from said seat, saidspider comprising an outer
of movement of said valve head at all times.
13. A valve for high temperature ?uids com»
guided portion and arms connecting said outer -
portion and said valve head, said arms being gen
erally spirally disposed outwardly from said valve
conducting conduit therethrough and a, ?uid 60 head whereby upon temperature changes the
stagnating chamber therein, slots in the walls of
valve head will rotate as the arms change length
said conduit communicating with said chamber, a
and not be substantially translated relative to
valve head disposed in said conduit, a seating por
said plane.
“
'
tion on said valve head, a portion of said conduit
'
GEORGE P. BUNN.
forming a valve seat for said, seating portion, and 65
prising in combination a housing having a-?uid'
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