FR2529288A1 - ELECTRO-MAGNET DEVICE AND ITS APPLICATION TO THE CONTROL OF VALVES - Google Patents

Abstract

THIS DEVICE INCLUDES AN ANNULAR WINDING 44, A CARCASE 46, A TUBE 54 FOR COAXIAL GUIDANCE TO THE WINDING, A PLUNGER 38 SLIDING IN THE TUBE 54, AN ADAPTER 11 STOPPING THE END 48 OF THE CARCASE, AN ANNULAR ELEMENT 50 THROUGH THE OPPOSITE END 47, A CAP 41 FIXED ON THE TUBE 54 AND A NUT 52 NOW THE ASSEMBLY IN A CO-AXIAL ARRANGEMENT. A GUIDANCE UNIT IS PROVIDED BETWEEN AN ELEMENT INCLUDING A SEAT FOR A PILOT VALVE CONNECTED TO THE PLUNGER BY A RADIAL FLANGE. THIS GUIDANCE BODY IS ANY OF SEVERAL BODIES HAVING DIFFERENT DIMENSIONAL RINGS IN ORDER TO ALLOW THE USE OF A SINGLE-SIZED PILOT VALVE WITH ANY SET OF SEATS AND SHUTTERS OF DIFFERENT DIMENSIONS OF DIFFERENT DIMENSIONS THE PILOT VALVE, ACCORDING TO DESIRED FLUID FLOW.

Description

The present invention relates to taps

  valve and is more particularly relative to the

  plug-in boards powered by an electro-airnant.

  In a form of flow control valve

  A mushroom obturator is disposed in abutment against a seat to close the valve. The mushroom obturator is provided with a bore which passes therethrough and which is closed.

  selectively by a pilot valve

  gnon is resiliently biased into the closed position

  ture with a fluid pressure acting on the c 8 tees

  opposite of the shutter to allow the spring of

  to keep the shutter in a closed position

  When the pilot valve is lifted from its seat, the fluid pressure behind the poppet valve is released into the bore therethrough, thereby allowing the

  fluid pressure acting upwards on the chamber valve

  pinion to move the latter from its seat, allow-

  so is the flow through the valve.

  In one embodiment, the pilot valve is

  actuated by an appropriate electromagnet

  connected to the pilot valve to selectively position

  the latter by making the desired order of the

fluid.

  Such valves are provided in a range

  range of dimensions depending on the flow capacity

desired.

  It is furthermore conventional to make such valves in a plug-in form, comprising both the valve and the solenoid actuator together in a single assembly which by way of illustration may be connected to suitable ports at the same time. part way

Threaded adapter.

  U S A 2 951 133 discloses a hermetically sealed electromagnetic contactor of which a drawn metal member is provided with an opening

  center through its upper end, which is

  by an upward ledge extending

  towards an opening in a bowl-shaped box disposed above. US Pat. No. 3,215,902 discloses a mechanism actuated by an electromagnet and wherein the electrical assembly is disposed between a flux plate and an upper flow plate, aligned central openings being provided in the elements and mounted on a cylindrical portion. in

protrusion of the core support.

  U.S. Patent 3,446,473 discloses an electromagnet valve in which the housing of the electromagnet

  is screwed onto the body of the valve.

  U.S. Patent 3,593,241 discloses a valve for

  electromagnet having a split flow sleeve for

  the winding conductors The flow path

  gnetic comprises a portion which is established by means of two magnetizable end members which are disposed adjacent opposite end surfaces of the winding of the electromagnet, with a magnetizable central branch

  constituting the end cap.

  U.S. Patent No. 3,818,398 discloses an electromagnetic coil assembly in which a T-shaped tubular shell formed of a ferrous material is press-fitted into each end of the coil.

  the coil carrying the winding of the electromagnet.

  US 4,074,700 discloses a valve assembly in which the winding housing provides a flow return path that extends toroidally from the winding through an upper portion of a plunger guide member. , through the diver, in

  through a working gap, through a po-

  through a winding support flange,

  and upward through a winding box The wood

  The winding member includes an axially extending lip that is dimensioned diametrically to fit closely to the plunger and axially to provide an airway for flow transfer. The plunger guide is

  as thin as possible so as to reduce in the middle

nimnum the magnetic losses.

  The subject of the invention is an improved electromagnet valve providing improved efficiency and economy

Manufacturing.

  According to one embodiment of the invention,

  is provided in a fluid flow control valve.

  of having a movable shutter, a structure of 1 electro-ai-

  Advanced mantle to selectively position

the shutter.

  In a more particular way, the object of the invention is

  such an improved electromagnet structure comprises

  an annular winding, carcass members each having a side wall and end walls bent inwardly delimiting an inwardly open cavity, the cavities being open towards each other, the winding being disposed in said cavities, a tube

  guide disposed coaxially with the winding, a plummet

  magnetic rotor sliding axially in the guide tube and arranged radially inside the coil, connected to the valve, t

  an adapter having an axially directed surface towards the

  the end walls folded inwardly at an outer end of the carcass, a fastener, a plug extending inwardly from the inner end of the guide tube and having a

  internal axial end protruding through the annular element

  nular and delimiting an external part of connection, and a

  box enclosing the assembled structure, the fastening member

  being attached to the connecting part so as to take

  pressing force against the annular element and forcing the latter axially outwardly against the carcass, and the latter against the surface of the adapter to lock the structure in a relative provision of co-axial straightening.

  According to the embodiment shown, the wood

  tier is molded in a synthetic resin and extends in the peripheral direction around the abutment of the surface of

  the adapter and end walls folded towards the

  at the outer end of the carcass elements.

  The ends of the carcass members which are folded inward, in the illustrated embodiment, are spaced at a distance which is approximately

  equal to the outer diameter of the guide tube.

  According to the embodiment shown, the

  Be guiding is brazed on the cap and on the adapter.

  In a more particular way, the invention

  such an electromagnet structure, comprising a coil

  two different carcass elements and

  each having a substantially planar side surface

  and end walls folded inward delicately

  placing an open C-section inward, said

  C-sections being open towards each other, 1 winding

  being centered between them so as to extend axially

  parallel to the side walls, a coaxial guide tube to the winding, a magnetic plunger sliding axially inside the guide tube and connected to the valve, an adapter having an annular projection projecting axially inwardly abutting on said walls

  ends folded inward at an outer end

  no carcass elements, an annular washer abutting

  on the end walls bent inwards to the

  end of the carcass elements, and having a glue

  annular ring radially internal and folded axially

  inward, a nut, a threaded plug attached to the

  inner end of the guide tube and having one end

  axial projection protruding through the washer and delimiting

  both an externally threaded connection portion, the nut being screwed onto the connecting portion so as to bear against the flange and force the washer axially outwards against the boss of the adapter to lock the structure in a relative assembly coaxial 2

  and unboitier enclosing the assembled structure.

  In the embodiment shown, the elements

  carcass elements delimit parallelepipedal spaces open axially inwards, with the parts of the spaces not occupied by the winding being filled

of a cured synthetic resin.

  In the embodiment shown, the box is constituted by a parallelepipedic envelope which is

  as a whole analogous to the external configuration defined

  denied by spaced carcass elements.

  In another aspect, a subject of the invention is a valve having an improved pilot valve arranged to use a single size pilot valve with any one of a plurality of sets of valve seats and associated mushroom valves of different sizes each having the same size. configuration

pilot valve seat.

  According to the embodiment shown, the

  pilot guidance system consists of any one

  several pilot guides, each with a distinctive collar

  outward and of different radial dimensions to allow the use of a single pilot valve with any of the sets of seats and

  shutters of different sizes.

  The invention also includes a valve structure in which the sliding portion of the pilot valve defines a flattened cross-section to

  forming flow passages which extend longitudinally

  nally on the periphery of the sliding part.

  According to one embodiment shown, two flats are provided on diametrically opposed faces.

  of the sliding part of the pilot valve.

  The invention also encompasses the arrangement of a

  T-slot in the electromagnet plunger, the

  a pilot ape having a connecting head received in said T-slot. According to an embodiment shown, the T-slot extends over the entire diameter across

of the diver.

  In a more particular way the invention includes

  be an electromagnet valve with a plunger and

  a pilot valve to control the displacement of the ob-

  head turner in the mushroom, means in a

  end of the diver delimiting a T-slot

  extending radially, the longitudinal part of which

  through the end of the plunger, and means on the pilot valve defining a connecting head received in the slot, this T slot extending completely across

  of the diver, the longitudinal extent of the longitudinal part

  of the T-slot being less than about half the longitudinal extent of the T-slot. The connecting head has a dimension in the

  transverse direction less than that of the T-slot,

  placing an easy flow of fluid beyond the connecting head into the T-slot. The pilot guide member defines a surface adjacent to the end portion of the E-pion foil; a fluid chamber opening on the longitudinal part of the T-slot.

  The invention also includes an electric valve.

  tri-airfant comprising an electromagnet delimiting a chamber

  plunger, an electromagnet plunger mounted

  alternatively in the chamber, and a valve

  connected to the diver at one end of the chamber of that

  and delineating a converging surface tapering to a transverse end surface, means on an adjacent end of the electromagnet plunger

  delimiting a converging surface and an end surface

  complementary cross-section, a passage in the plunge

  electromagnet for conducting fluid from the portion of the chamber between said surfaces, and means for limiting the displacement of the electromagnet plunger to said surfaces at one end of the plunger chamber for prevent contact

  cross-sectional end surfaces and maintain a

  transfer fluid in the plunger chamber between the end surfaces continuously communicating with

the passage.

  According to an embodiment shown, the

  Convergent surfaces are roughly frustoconical.

  Following an example of execution, the surfaces of

  transverse tremities are nearly flat.

  The displacement limiting means in the illustrated embodiment comprises abutment surfaces cooperating together on the plunger of the electromagnet and

  the electromagnet at the large end of the converging surface

gente of the diver's room.

  The fluid flow control valve structure according to the invention is extremely simple and of economical manufacture while ensuring the characteristics

highly desirable above.

  Other features and advantages of the invention

  will appear in the following description

  with reference to the accompanying drawings given by way of example only and in which: Fi 1 is a perspective view of a plug-in valve to which the invention is applied; FIG. 2 is a view in diametral section on a larger scale; Fig. 3 is a cross-sectional view thereof substantially along the line 3-3 of Fig. 2; Fig 4 is a cross-sectional view along line 4-4 of Fig 2;

  FIG. 5 is a partial view in diametrical section

  a variant of a form of plug-in valve

  what is the invention applied and including a guide

  pilot adapted for use with chamber shutters

  gables and seats of different sizes; FIG. 6 is a diametral sectional view of a plug-in valve which is generally similar to that shown in FIGS. 1 to 5, but which is arranged to

  operate normally in the open position.

  According to the illustrated embodiment of the invention

  vention, a pluggable poppet actuated by

  an electromagnet and designated as a whole by the reference

  10 comprises an adapter portion 11 comprising a threaded portion 12 adapted to be screwed into an orifice

  in which a fluid circulates. The adaptation part comprises

  A threaded end 13 A member 14 having a seat

  ge has a threaded end which is screwed into the end 13 of the adapter part so as to be

  received in the fluid circulation port.

  A first sealing ring 16 is disposed on the adapter portion and a second sealing ring 17 is provided on the member 14 to seal

  of the valve assembly inside the orifice in the-

which circulates a fluid.

  As shown in FIG. 2, a support ring 18 can be associated with the sealing ring 17 in a

  org I annular appropriate 19 open towards the outside

  in the element 14 having a seat.

  The element 14 having a seat has two diametrically opposite inlet openings 20 and 21 which open radially inwardly into a valve chamber 22 formed inside the element 14 having the

  seat An outlet opening 23 opens axially to

  firing from chamber 22 and is normally closed by an ob-

  24 which is supported on an annular seat 25 of the

  14 at the inner end of the outlet opening 23.

  Thus, when the valve is mounted in a

  with a suitable orifice, the pressure of the fluid

  between the seals 16 and 17 is applied.

  through the inlet openings 20 and 21 on the obtur-

  According to the illustrated embodiment, the ob-

  turner 24 is constituted by a poppet shutter having a lower portion 26 bearing in contact with the

  seat 25 and having an axial bore 27 having a counter

  bore 28 in which is received a check valve 29 This check valve prevents the fluid pressure prevailing at the outlet opening 23 to cause a flow in the opposite direction through the bore 27 in a chamber 30 of soupa

  pilot within the shutter 24.

  The bore 27 is normally closed by a pilot valve 31 having a guide portion 32 slidably received in a cylindrical upper cavity 33 of

  The shutter 24 The guide portion 32 has two

  dishes 34 diametrically opposed to ensure communica-

  fluid flow between a transfer chamber and the chamber

30 of the pilot valve.

  The guide portion 32 acts as a pilot guide and has an upper end 36 abutting against a lower end 37 of an electromagnet plunger 38,

  in the normally closed position of the valve A

  helical fate 39 extends between the guide portion 32 and the bottom support portion 26 of the shutter 24 to bias the fowler valve downwardly relative to the guide portion 32 However, as shown in FIG. when the plunger 38 is in the position

  the lowest with its end 37 abutting on the end

  upper tee 36 of the guide portion 32; the plunger forces the pilot valve and the mushroom valve towards the

  i O down in the position in support of FIG.

  In the normally closed position of the solenoid valve, the plunger is urged downward by a helical spring 43 which acts between an upper end 40 of the plunger and a plug 41. The spring 43 has a force which is greater than that of the spring. 39 and therefore overcomes the action of the latter to bring

  the valve bodies in the normally closed position

shown in FIG.

  As we have also shown in Fig 2, the ob-

  turateur 24 has a light 42 which ensures that all

  both the communication between the inlet opening 20 and the chamber 30 of the pilot valve Thus, in the position

  normally closed in which the pilot valve 31

  In the pilot bore 27, the fluid pressure at the inlet openings 20, 21 is transmitted through the lumen 42 into the pilot valve chamber 30 and acts to hold the cam follower 24 in position. closure shown in FIG. 2, in cooperation with the

springs 43 and 39.

  The pilot valve 31 is moved from the bearing position shown in Pig 2 by a suitable longitudinal displacement of the plunger 38 to the plug 41 under the control of an electromagnet coil 44. According to the illustrated embodiment , the winding 44 is worn 1 t

  by an appropriate spool 45 which is mounted in a car-

  breaks 46 which is as a whole tubular and present

  an inner first end, 47, and a second end,

  The outer shell 48 opposite The carcass is embedded in a wood

  outer tier 49 which can be formed by means of a resin

  synthetic material The space inside the car-

  the case receiving the winding is filled with synthetic resin

  as appropriate, such as an epoxy resin.

  A washer 50 is provided in the housing and

  turns the upper end of the plug 41 and has a

  inner end portion 51 folded axially and extends

  outward to the outer surface of the case

  to cooperate with a nut 52 screwed onto the end

distal end of the cap 41.

  The end 43 of the carcass abuts on the

  adaptation part 11, radially inwards of the wood

  tier 49 and thus the nut 52 acting through the washer 50 and the carcass 46 effectively clamps on the adaptation part the frame of the electromagnet

  which is referred to as a whole by reference 53.

  As is furthermore shown in FIG. 2, a tube 54 forming a slide is fixed on the plug 41,

  for example by brazing at 55 so as to extend towards the

  interior of the coil 45 and comprises a lower end 56 which is received in a suitable cavity 57 provided in

  the adaptation part 11 The plunger 38 is mounted

  alternatively in the tube 54 between a normally closed position of the valve which is shown in FIG.

  Fig 2, and an open position of the valve in which

  the plunger is raised, abutting with the cap 41.

  The Superior Amity 36 of the Guidance Part

  32 of the pilot valve forms a cylindrical head which is received in a transverse slot 58 in T in the lower end of the plunger 38. The lower portion 59 of the slot is relatively short in order to provide a

  high resistance in the end portion 60 of the pinion

  38 which is in front of the transfer chamber 35.

  A fluid flow passage 61 extends from the upwardly sloping to a cavity 62 which receives the helical spring 43 and opens into a chamber 63 formed between the upper end 64 of the upper part 40. of the diver and the lower end

plug 41.

  As shown in FIG.

  mite 64 of the diver is delimited by a truncated portion

  radially internal 66 and a radially flat annular portion

  the outer surface 67 in turn is delimited by an internal radial plane portion 68, by a

  frustoconical intermediate part 69 and by an

planar outer ring 70.

  The length of the frustoconical surface portion 66 is slightly less than that of the frusto-conical surface portion 69 of the plug 41 so that when the plunger is moved inward as a result of the excitation of the coil 44, the surface of the the portion 67 of the plunger abuts the surface 70 of the stopper,

  the plunger remaining spaced from the plane surface 68 of the

  chon, so as to avoid fluid entrapment in

  the chamber 63 following the excitation of the electromagnet.

  The fluid can flow freely from the chamber

  63 following this excitation of the electromagnet, down through the cavity 62 and the passage 61 in

* the slot 58 T The end 36 of the pilot valve com

  takes a cylindrical head 71 and a cylindrical rod 72 of

  reduced diameter connected to the guiding portion 32 of the valve

  pc-pilote The rod 72 presents a game compared to the former

  tremity 60 of the diver in the lower part 59 of the

  slot 58 T, so that the fluid can flow free-

  downward beyond the stem 72 of the end of

  the pilot valve in the transfer chamber 35.

  As indicated above, the guiding portion 32 of the pilot valve has at least two diametrically opposed flats 34 delimiting flow passages to allow the trapped fluid to flow out into the chamber 30 of the valve. -Pilot for

  be distributed with the fluid flowing through the sou-

  pope, in the opening position of the latter.

  As shown in Fig. 2, the outer end surface 90 of the plunger is forced against an inner end surface 91 of the guide portion 32 of the pilot valve Com; ie, the axial length of the head 71 and the rod 72 of the guide portion 32 is

  less than the distance between the surface 90 and the

  internal mate 92 of the T-slot 58 to provide clearance with the head 71 to allow the flow of fluid between the flow passage 61 and the slot 58 at any time. By keeping the plunger spaced from the end surface 68 at all times, the entrapment of fluid

  between the plunger and the stopper is effectively prevented

  cace By providing advanced flow ducts

  of fluid, comprising the T-slot extending diametrically

  and the flats on the guide portion 32 of the

  pilot-pilot, an improved free movement of the pilot valve is ensured for a better functioning of the

valve 10.

  The electromagnet valve 10 is adapted, as indicated above, to be inserted into an orifice such as an orifice 73 shown in FIG. 1 having a threaded portion 74 into which the threaded portion 12 of the fitting part 11, with the element 14 disposed quite inside the orifice, as indicated above, the sealing ring 16 seals the valve with respect to the orifice around the hole 74 and the circular ring 17 seals the seat member with respect to the orifice therein to ensure a sealed fluid passage through the bore.

pope in the hole.

  As is shown in FIG. 5, the invention also encompasses a valve-mushroom variant which is generally designated by the reference numeral O and which is similar to the mushroom valve 10 but in which the guide portion 132 of the pilot valve is slidably received in a pilot valve guide 175 which is

  clamped between seat 114 and adapter portion 111.

  Thus, as has been shown more particularly

  5, the pilot valve guide portion 175

  includes a portion 176 extending radially toward the

  and slidably receiving the guide portion 132 of the pilot valve, and an outwardly facing annular portion 177 defining an annular cavity 178 of

  open-angle section axially outwards, re-

  positing against the inner end of the element 114

  a seat when it is completely screwed into

  the tapped end 113 of the adapter.

  As shown in FIG. 5, the spring 139 of the pilot valve extends between the annular portion 177 directed outwardly of the pilot valve guide and

  the outer end of the shutter 124 mushroom.

  The shutter comprises a light 142 ensuring communication at all times between the inlet opening 120

  and the pilot valve chamber 130.

  The combination of the adapter portion 111, the shutter 124 and the seat 114, which is shown in FIG. 5, comprises a set of several games of different dimensions of such adapters, mushroom shutters and seats each having the same seat configuration of

  valve-pilot so that one can use the ra me agen-

  There is also a pilot valve with a series of valves which differ only in the flow capacity provided by the different sized filler plugs and seats. The guide portions of the pilot valves can thus be adapted to such a wide range of valve capacities. by changing the radial extent of the outwardly directed annular portion 177 to correspond with the selected member 114 having

  a seat and the shutter 124 complementary.

  With the exception of the use of the guiding

  175 allowing the valve to be adapted to a wide range of flow control valves of different

  dimensions using the same valve configurations-

  pilots, the poppet valve 110 is analogous to the valve

  and works in a similar way.

  Referring now to the embodiment of Fig. 6, there is shown a valve-mushroom which in

  its assembly is similar to the valve 10 but which is

  to operate in a normally open mode,

  this valve comprising an arrangement designated in its

  appears by the reference 210 The electromagnet 253 is in

  its whole similar to the electromagnet previous 53 to the ex-

  ception because a threaded cap 252 is provided on the ex-

  threaded end 279 of the stopper 241 and is adjusted to an ex-

  tremité 280 projecting from the tube 254 forming a slide.

  The plunger 240 is slidably received in the slide tube in the electromagnet assembly 253 The plunger has a frustoconical outer end

  281 having a flat distal end surface 282

  pilot guide 283 is held co-axially at

  the inside of the outer end of the tube 254 forming

  and presents a complementary frustoconical cavity 284

  the frustoconical end 281 of the diver.

  The pilot guide member further comprises a bore 285 which passes through it which opens out into the

the pilot valve chamber 230.

  The pilot valve 231 comprises an inwardly extending rod 286 abutting with the surface 282 of the

  diver as shown in Fi 7 5.

  The pilot valve further comprises a flange

  ring 287 A spring 239 for soliciting the valve

  The pilot pushes inward against the collar 287 and outwards against a plate 288 for retaining

  spring which is blocked by the element 214 screwed onto the

adaptation section 211.

  The stem 272 of the pilot valve extends outward through a suitable opening 289.

  in the spring retainer plate.

  The spring 239 normally urges the valve

  pilot inward allowing the pressure to

  fluid from the inlet openings 220 to force the ob-

  turner-mushroom 224 away from the seat 225 Ce-

  during, when the electromagnet 253 is excited, the plummet

  240 is forced outwardly by moving the pilot valve stem 286 outwardly and thereby forcing the pilot valve outwardly against the shutter 224 to move the valve 224 to bear against the

  seat 225, thus closing the valve.

  Thus the normally open valve 210 is

  to the normally closed valve except for

  the organization of the organs to ensure the func-

  in a normally open mode.

  As indicated above, each of the valve embodiments 110 and 210 is generally similar in construction and operation to the valve

  and similar elements are designated by reference

  those similar ones that are only assigned a first

  hundred and a second hundred respectively.

R.EVJDICA Ti OIS

  1 Electromagnet device for position-

  selectively shutting off a fluid flow control valve having a shutter

  medium, characterized in that it comprises an annular winding

  laire (44), means delimiting a tubular carcass (46)

  having opposite side walls and end walls

  mente opposed delimiting a space in which is disposed the winding, a tube (54) guidagce forming

  slide disposed co-axially in said winding, a plummet

  magnet, (38) axially slidably mounted in said guide tube and radially located within said coil and connected to said valve, an adapter (11) having an axially inwardly facing surface and abutting with

  the end walls bent inwards to an ex-

  outer tremity (48) of said carcass (46), an annular element (50) abutting against an end wall (47)

  folded inwards) at the other end of said car-

  breaks, a fastener (52), a plug (41) extends

  dant inward from the inner end of said -tube

  guide (54) and having an internal axial end of

  protruding through said annular member and forming an outer connecting portion, and a housing (49) enclosing said electromagnet structure, said attachment member

  (52) being fixed on said connecting portion in a manner

  supporting said annular element (50) axially towards

  outside against said carcass and to force the latter

  against the surface of said adapter to lock the

  seems of electromagnet in co-axial assembly position.

  2 Device according to claim 1, characterized

  in that said housing (49) consists of a housing

  molded synthetic resin which coats said electro-structure

  magnet, said housing extending in the peripheral direction around the abutment of said surface of the adapter and said end wall at said outer end of the

carcass (46).

  3 Device according to claim 1, characterized

  characterized in that the outer end wall (48) of the carcass (46) forms an opening having a diameter approximately equal to the outer diameter of said slide guide tube (54), and in that the wall end end (47) of the carcass (46) delimits an opening having a diameter of

  approximately equal to the diameter of said plug (41).

  4 Device according to claim 1, characterized in that said slide guide tube (54) is

  brazed to the plug (41) and to said adapter (11).

  Electromagnet device for positioning se-

  the shutter of a flow control valve

  fluid medium comprising a movable shutter, characterized

  in that it comprises an annular winding (44), a carcass-

  having parallel walls that are almost flat

  and parallel end walls which are almost flat

  providing space for housing a winding centered between

  said walls so as to extend axially and parallel

  said lateral walls, a guide tube forming

  placed coaxially with said winding, a plunge

  magnet (240) mounted axially slidably

  said guide tube forming a slide and being connected

  said valve, an adapter (211) having an annular boss

  projecting axially axially inward abutting on

  the end wall at the outer end of said carcass-

  an annular washer (250) being abutted on

  the end wall at the inner end of said car-

  broken and having an inner radial annular flange folded axially inward, a nut (52), a threaded plug (241) attached to the inner end of said slide guide tube and having an inner axial end projecting through said washer (250) and delimiting an externally threaded connecting portion, said nut being screwed onto said connecting portion in order to exert a bearing force against said flange and forcing said washer axially outwards against said carcass, the latter being forced outwardly against said boss of the adapter to lock the electromagnet structure in a co-axially assembled position, and

  a box enclosing the mounted structure.

  6-Device according to claim 5, characterized

  characterized in that said side walls of the carcass (46) are spaced a distance which is approximately equal to the outside diameter of said winding (44), said housing being constituted by a parallelepipedic element which is generally similar to the outdoor configuration

of said carcass -

  - 7 Flow control valve comprising an actuating electromagnet, an element having an annular valve seat, an adapter for securing

  said element having a seat on the actuator

  electromagnet, a mushroom filler

  sliding tee co-axially in said element comprising

  a seat and having a flow control passage de-

  plugging through a pilot valve seat, a valve

  pilot and means operating in response to the electromagnet actuator for selectively moving said pilot valve toward and away from it

  said pilot valve seat to close and open selector

  said flow control passage, which characterizes

  characterized in that it comprises a pilot valve guide member (175) having a bore therethrough and slidably receiving a sliding portion (132) of said pilot valve, and a radially directed flange (177).

  between said valve seat and the adapter, said element

  seat (114) having the seat and the mushroom plug (124) being any one of several sets of seats and mushroom closures of different sizes having

  each has the same seat configuration, said guide member

  pilot blade being constituted by any one of several pilot guide members each having a ledge directed towards

  outside and extending laterally for a different distance

  fbrente, in order to allow the use of a pilot valve of a single dimension with any set of seats and

  Mushroom shutters of different sizes.

  8 Device according to claim 1, characterized

  characterized in that said sliding guide portion (32) of the pilot valve (31) has a flattened cross-section and said through bore in which said portion of

  guide is slidably received is cylindrical.

  Apparatus according to claim 1, characterized

  in that said actuating electromagnet comprises a reciprocating plunger (40) having a slot

  T radial, the longitudinal part of which opens out di-

  actuation of the poppet shutter, said pilot valve (31) having a connecting head (36) received in said slot

  in T which extends entirely transversely across the-

said diver.

  Device according to claim 9, characterized

  characterized in that said connecting head (36) extends in the transverse direction a distance less than that of said T-slot to allow easy fluid flow beyond said head (36) into said T-slot .

  11 Valve having a delimited electromagnet

  both a plunger chamber, an electromagnet plunger alternately slidably mounted in said chamber, and valve spring connected to said plunger, characterized in that it comprises means at one end of the plunger chamber and delir a surface converging (69) narrowing to a transverse end surface (70), means on an adjacent end of the plunger

  (40) and delimiting a converging surface (66) and sur-

  13 end faces (67) are more or less complementary, a step

  wafer (61) formed in the plunger (40) for conducting a fluid from the portion of said chamber (63) included

  between said surfaces, and means for limiting the

  placement of the plunger (40) of the electro-airmant towards the

  your surfaces at one end of the chamber (63) of the diver

  to prevent contact between the transverse surfaces and

  dirty ends and maintaining a fluid transfer portion in said plunger chamber between said end surfaces and permanently connected with said

passage.

  Valve according to Claim 11, characterized

  in that said means for limiting the movement

  are constituted by abutment surfaces on said plunger (40) of the electromagnet and on the electromagnet (44) on the large end of said convergent surface

of the diver's room.

  13 Valve actuated by an electromagnet and

  having a plunger (40) slidably mounted alternately

  in a slide tube (54), a plug (41) for closing an inner end of said tube (54), a

  mushroom valve having a control port and a

  pilot-pope (31, 231) for selectively closing said initial

  a horn, a valve characterized in that

  takes means defining a substantially unrestricted flow path from between the plug and the plunger therethrough and around said pilot valve (32,

  232) to this control port.

  14 Electromagnet-actuated valve having an electromagnet plunger having an as-

  wise, and a pilot valve to control the movement

  cement of a main poppet shutter, characterized in that it comprises means provided in an end portion of the plunger (40) and delimiting a slot extending radially T, the head portion of the T-slot; opening on said bore of the plunger, and the stem portion of the T-shaped opening opening longitudinally through the end portion of the plunger, means on said pilot valve (31, 231) delimiting a connecting head received in said T-slot, the leading part of

  said slot extending entirely transversely through

  to the plunger, and means for preventing said connecting head (36) of the pilot valve (31) from closing said plunger bore in the head portion of the T-slot.

  Electromagnet valve according to claim

  cation 14, characterized in that the means for preventing said connecting head (36) from closing said bore (61) of the

  diver include associated means on the valve-

  pilot (31) and the plunger (40) in the slot portion

  T receiving the rod (32) of the pilot valve in order to

  holding said connecting head (36) spaced apart from said plunger around the opening of said bore on said T-slot.