EP0221896A1 - Soupape metallisee - Google Patents

Soupape metallisee

Info

Publication number
EP0221896A1
EP0221896A1 EP85902840A EP85902840A EP0221896A1 EP 0221896 A1 EP0221896 A1 EP 0221896A1 EP 85902840 A EP85902840 A EP 85902840A EP 85902840 A EP85902840 A EP 85902840A EP 0221896 A1 EP0221896 A1 EP 0221896A1
Authority
EP
European Patent Office
Prior art keywords
valve
valve body
outlet
inlet
passage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP85902840A
Other languages
German (de)
English (en)
Inventor
Richard E. Howard
John C. Schumacher
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JC Schumacher Co
Original Assignee
JC Schumacher Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by JC Schumacher Co filed Critical JC Schumacher Co
Publication of EP0221896A1 publication Critical patent/EP0221896A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K13/00—Other constructional types of cut-off apparatus; Arrangements for cutting-off
    • F16K13/04—Other constructional types of cut-off apparatus; Arrangements for cutting-off with a breakable closure member

Definitions

  • This invention relates to valves generally, and, particularly, to valves for handling high-purity reagents.
  • Valves are not usually considered to be sources of contamination. Indeed, in most systems, the valve, by the very nature of its construction, having a heavy body as compared with the thickness of the walls of pipe, conduit, or tubing connected thereto, is not considered to be permeable to any contaminant. Sometimes, valve seals are imperfect and, therefore, constitute a source of contamination, but the body of the valve per se is not considered to be such as would permit entry of any contaminants.
  • valves are, therefore, not suitable for certain long-term storage and certain handling applications in which ultra high-purity, highly reactive chemical reagents are stored or handled.
  • This invention is directed to a solution to this problem in which the benefits of the inertness of the organic polymer are retained, and the disadvantage of gas and moisture permeability is eliminated.
  • the present invention comprises a valve especially constructed and composed to facilitate the handling of high-purity chemicals which react with, or whose effectivenss is limited by moisture or oxygen, thus resulting in contamination of the chemical.
  • the valve body is composed of a polymer which is inert to the chemical to be handled by the valve.
  • the body is so constructed that it forms an inlet and an outlet, and a passage for valving means.
  • the valve body is coated with a layer of oxygen and moisture vapor impermeable metal bound to the external surface of the body, forming a coherent, cohesive gas and moisture barrier on the body of the valve.
  • Means are provided for connecting inlet and outlet conduits to the valve, and valving means is movably received in the passage for being moved from an open to a closed position where, respectively, fluid is permitted to flow from the- inlet to the outlet, or such fluid flow is closed off.
  • the valve also has operability associated with, or carried on with a valving member, and a puncturing means for puncturing a seal on the end of the conduit.
  • the invention in one facet, comprises a combination of conduit, a seal closing the end of the conduit, and a valve body composed of polymer which is inert to the chemical to be handled by the valve. The body is so constructed as to form an inlet and an outlet, and a passage for receiving the valving means.
  • FIG. 1 is a side view, in cutaway, -showing the construction of the valve according to this invention connected to two conduits.
  • Figure 2 is a side view and partial cutaway showing the combination of this invention as it may be used as part of an article of commerce.
  • Figure 3 is an enlarged cross-sectional view of a portion of the valve body taken at the intersection of the outlet with the valve body in Figure 2, showing the metal coating over the threads, as well as the main part of the valve body.
  • the preferred embodiment of the invention is a valve which is especially adapted, constructed, and composed to facilitate the handling of high-purity chemicals which react with moisture or oxygen, and, by such reaction become contaminated.
  • the valve 10 of this invention is best shown in Figure 1 to which reference is now made.
  • the valve 10 comprises a body 12 which is composed of a polymer which is inert to the chemical to be handled by the valve, the body forming an inlet 14 and- an outlet 16.
  • the valve body is composed of a polymer. A great many organic polymer ⁇ may be used. Polyethylene, nylon, polyvinylfluoride, etc., may be used, depending upon .the particular reagent to be handled. High density linear polyetheylene, polyetheylene terphthalate, and polyvinylidine chloride are preferred, although the invention is not limited to the use of these particular polymers.
  • the valve body also forms the passage 18 for receiving valving means 20.
  • Means are provided for connecting the inlet of the valve to a conduit 100.
  • the conduit 100 is of glass or quartz, and has a groove 102 formed therein into which a keeper washer 22, which -is sufficiently resilient to slip over the end of the conduit, is received.
  • a conical ferrule 24 is held in compression by a nut 26 which secures the conduit in place.
  • the conduit 100 is closed by a seal 104 which may be a noble or other inert metal disc, or a frangible quartz or glass seal.
  • the seal butts against the shoulder 28 formed at the juncture of the passage and the inlet in the valve body.
  • the outlet conduit 106 which may also be of quartz or glass, is held in place in a similar manner, in this instance simply using a conical ferrule 30 and a nut
  • the valving means 20 comprises, in the embodiment illustrated, which is merely exemplary, an elongate • shaft generally indicated at 34, and a handle generally indicated at 32, the shaft 34 being threaded and being shown at 38, and being threadably received for reciprocal movement in corresponding threads inside the passage of the valve body, the passage being shown at 18.
  • the valving means includes a notch 40 into which an "0" ring or other sealing device 42 is received. In compression between the valving means and the wall of the passage in the valve body, a gas tight seal is formed therebetween.
  • a means for breaking the seal, shown at 42 is attached to, or carried- on, or otherwise operably associated with the valving means.
  • the breaking means punctures the seal 104.
  • the valving means is moved upwardly, opening it to fluid communication between the inlet and the outlet, then the fluid is permitted to flow from the inlet ' to the outlet, thus permitting fluid communication between the conduit 100 and the conduit 106.
  • the valving means is secured in a gas tight relationship with the passage of the valve body by ferrule 46 and the nut 48. It will be understood that this is simply an exemplary form of the valve, and many, many forms of the valve may be utilized without departing from the principles of this invention.
  • the valve would function quite satisfactorily from the point of view of simply breaking the seal, opening and closing the passage to fluid flow.
  • problems which have plagued the industry for at least two decades would remain, namely that as the reagent flowed from the conduit 100 through the valve, and out the conduit 106, it would be contaminated with oxygen, moisture, or some other gas which permeated through the body of the valve.
  • a layer 50 of metal is formed over the outside of the valve body.
  • the layer 50 may cover only the major portions of the valve body, since there is a diminished problem of gas permeation around the inlet and the outlet.
  • the metal area may also encompass the threads on the valve.
  • the metal may be any of a large number of inert, or relatively inert metals.
  • the metal may, for example, be stainless steel, chromium, zinc, cadmium, tantalum, or the noble metals, although cost usually precludes use of the noble metals.
  • the layer of metal may be formed by electrolytic coating, with appropriate pre-treatment and a molecular thin layer of copper, by sputtering or vapor deposition.
  • the layer of metal is typically from 0.003 to 0.010 in thickness, and preferably around 0.006 of an inch in thickness.
  • FIG. 2 The embodiment shown in Figure 2 is identical to that in Figure 1 with the exception that- this combination is a part of an article of manufacture which may be shipped.
  • the valve is secured, as part of the article of manufacture, and shipped in commerce, and the outlet is simply closed with a plug 108.
  • the valve is identical as described before. This combination is particularly useful since the valve is already in place, and it is simply necessary for the recipient to remove the nut 32 and the plug 108, and replace the plug 108 with a suitable conduit going to the system to which the reagent is to be directed for use.
  • ⁇ h valve is, of course, shipped in the open position.
  • This invention finds application in the electronics, optics and semiconductor industry for the 20 storage, shipping and handling of ultra high-purity reagents.

Abstract

Soupape métallisée construite et composée de manière à faciliter la manipulation de produits chimiques de grande pureté et qui réagissent avec l'humidité ou l'oxygène ou dont l'efficacité est limitée par l'humidité ou l'oxygène.
EP85902840A 1985-05-17 1985-05-17 Soupape metallisee Withdrawn EP0221896A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US1985/000931 WO1986006811A1 (fr) 1985-05-17 1985-05-17 Soupape metallisee

Publications (1)

Publication Number Publication Date
EP0221896A1 true EP0221896A1 (fr) 1987-05-20

Family

ID=22188684

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85902840A Withdrawn EP0221896A1 (fr) 1985-05-17 1985-05-17 Soupape metallisee

Country Status (6)

Country Link
EP (1) EP0221896A1 (fr)
JP (1) JPS62503047A (fr)
DK (1) DK24387D0 (fr)
FI (1) FI870180A0 (fr)
NO (1) NO870193L (fr)
WO (1) WO1986006811A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986006705A1 (fr) * 1985-05-17 1986-11-20 J.C. Schumacher Company Recipient jetable pour produits chimiques
US4844006A (en) * 1988-03-07 1989-07-04 Akzo America Inc. Apparatus to provide a vaporized reactant for chemical-vapor deposition
EP0596425A1 (fr) * 1992-11-04 1994-05-11 Air Products And Chemicals, Inc. Dispositif de stockage et de distribution d'une substance chimique
FR2958366B1 (fr) * 2010-03-31 2012-08-03 Gdf Suez Moyens pour obturer une extremite d'une conduite de fluide

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH248592A (de) * 1946-05-03 1947-05-15 Tech Neuheiten Ag F Ventil mit zerstörbarer Abdichtungsmembrane.
US3685795A (en) * 1970-07-06 1972-08-22 Baxter Laboratories Inc Fluid flow valve
GB1510344A (en) * 1975-04-16 1978-05-10 Casals Cardona Ind Sa Fluid control valves
DE7927416U1 (de) * 1979-09-27 1980-01-17 Egeplast Werner Strumann Gmbh & Co, 4407 Emsdetten Kunststoffrohr

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8606811A1 *

Also Published As

Publication number Publication date
DK24387A (da) 1987-01-16
WO1986006811A1 (fr) 1986-11-20
JPS62503047A (ja) 1987-12-03
FI870180A0 (fi) 1987-01-16
DK24387D0 (da) 1987-01-16
NO870193L (no) 1987-03-09

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19870202

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

17Q First examination report despatched

Effective date: 19870813

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19871225

RIN1 Information on inventor provided before grant (corrected)

Inventor name: SCHUMACHER, JOHN C.

Inventor name: HOWARD, RICHARD, E.