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1. WO1996005456 - DIAPHRAGM VALVE

Publication Number WO/1996/005456
Publication Date 22.02.1996
International Application No. PCT/EP1995/002957
International Filing Date 26.07.1995
Chapter 2 Demand Filed 19.02.1996
IPC
F16K 7/12 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
7Diaphragm cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage
12with flat, dished, or bowl-shaped diaphragm
CPC
F16K 7/126
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
7Diaphragm ; valves or; cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage
12with flat, dished, or bowl-shaped diaphragm
126the seat being formed on a rib perpendicular to the fluid line
Applicants
  • RUPNIK S.P.A. [IT/IT]; Via Ceccardi, 2 I-16121 Genova, IT (AllExceptUS)
  • RUPNIK, Carlo [IT/IT]; IT (UsOnly)
  • RUPNIK, Giorgio [IT/IT]; IT (UsOnly)
Inventors
  • RUPNIK, Carlo; IT
  • RUPNIK, Giorgio; IT
Agents
  • MAGGIONI, Claudio ; Jacobacci & Perani Via Visconti di Modrone, 7 I-20122 Milano, IT
Priority Data
MI94A00172608.08.1994IT
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) DIAPHRAGM VALVE
(FR) ROBINET A MEMBRANE
Abstract
(EN)
The invention relates to a diaphragm valve which comprises a valve body (3) having a bonnet (5) removably attached thereto and provided with a sleeve (57) lying perpendicular to a fluid interception seat (33) with the diaphragm (40); a stem (60) extends through the sleeve which is connected to a compressor element (63) acting on the diaphragm. This stem is guided slidingly within the sleeve and is axially rigid with a nut thread (78); the latter is adapted to engage with an external screw thread (58) of the sleeve, so as to achieve the sliding of the stem according to its screwing or unscrewing. Advantageously, the nut thread can be removed from the stem to make the screw thread available for the mounting of servomotors even of the type with linear reciprocating drive (i.e., pneumatic or hydraulic) by virtue of the stem/sleeve sliding fitting. Further, thanks to that fitting, ring seals (62) can be mounted on the stem to make the valve particularly reliable.
(FR)
L'invention concerne un robinet à membrane comprenant un corps de robinet (3) présentant un couvercle (5) fixé à ce dernier de façon amovible et doté d'un manchon (57) perpendiculaire à un siège (33) d'interception de fluide avec la membrane (40); une tige (60) s'étend dans le manchon et est reliée à un élément compresseur (63) agissant sur la membrane. Cette tige est guidée de façon coulissante à l'intérieur du manchon et est rigide axialement grâce à un filetage (78) d'écrou, lequel est adapté pour venir en contact avec un filetage (58) de vis externe du manchon, de manière à obtenir le coulissement de la tige selon son vissage ou son devissage. Une caractéristique avantageuse réside dans le fait que le filetage d'écrou peut être retiré de la tige afin de rendre le filetage de vis apte à un montage sur des servomoteurs même du type à entraînement à va-et-vient linéaire (c'est-à-dire pneumatique ou hydraulique) grâce au montage coulissant entre la tige et le manchon. En outre, grâce à ce montage, on peut adapter des joints annulaires (62) sur la tige afin de rendre le robinet particulièrement fiable.
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