GB1432833A - Injection apparatus eg for chromatographic analysers - Google Patents
Injection apparatus eg for chromatographic analysersInfo
- Publication number
- GB1432833A GB1432833A GB1926673A GB1926673A GB1432833A GB 1432833 A GB1432833 A GB 1432833A GB 1926673 A GB1926673 A GB 1926673A GB 1926673 A GB1926673 A GB 1926673A GB 1432833 A GB1432833 A GB 1432833A
- Authority
- GB
- United Kingdom
- Prior art keywords
- passage
- valve
- syringe
- chromatographic
- needle
- 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.)
- Expired
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
- F16K7/00—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves
- F16K7/02—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with tubular diaphragm
- F16K7/04—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with tubular diaphragm constrictable by external radial force
- F16K7/07—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with tubular diaphragm constrictable by external radial force by means of fluid pressure
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
1432833 Chromatographic analysis BRITISH PETROLEUM CO LTD 18 March 1974 (24 April 1973] 19266/73 Heading B1H [Also in Division F2] A valve for use in chromatographic analysers, e.g. for estimation of organic carbon in water, comprises a flexible tube 2 located between a pair of in-line connectors 3 to define therewith a continuous flow passage through the valve. When a pressure liquid or gas is delivered into chamber 1 via port 4, the tube collapses to close the passage. The tube may be circular or elliptical and formed of rubber or plastics. Samples for analysis are introduced into an analyser via a hypodermic needle 6 passed through the passage. The pressure in chamber 1 is relieved when the needle is inserted into or withdrawn from the passage. The valve may be actuated automatically by mounting the syringe on a sliding holder so that downward movement of the syringe activates the applied pressure. Alternatively, the applied pressure may be used to move the syringe and needle.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1926673A GB1432833A (en) | 1973-04-24 | 1973-04-24 | Injection apparatus eg for chromatographic analysers |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1926673A GB1432833A (en) | 1973-04-24 | 1973-04-24 | Injection apparatus eg for chromatographic analysers |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1432833A true GB1432833A (en) | 1976-04-22 |
Family
ID=10126527
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1926673A Expired GB1432833A (en) | 1973-04-24 | 1973-04-24 | Injection apparatus eg for chromatographic analysers |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1432833A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4187719A (en) * | 1977-08-11 | 1980-02-12 | B. Braun Melsungen Aktiengesellschaft | Apparatus to determine the sedimentation rate of red blood cells |
US11224719B2 (en) * | 2018-02-22 | 2022-01-18 | Srs Medical Systems, Llc | Urodynamic investigation apparatus, system, and methods |
-
1973
- 1973-04-24 GB GB1926673A patent/GB1432833A/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4187719A (en) * | 1977-08-11 | 1980-02-12 | B. Braun Melsungen Aktiengesellschaft | Apparatus to determine the sedimentation rate of red blood cells |
US11224719B2 (en) * | 2018-02-22 | 2022-01-18 | Srs Medical Systems, Llc | Urodynamic investigation apparatus, system, and methods |
US11511074B2 (en) | 2018-02-22 | 2022-11-29 | Srs Medical Systems, Llc | Urodynamic investigation apparatus, system, and methods |
US11759602B2 (en) | 2018-02-22 | 2023-09-19 | Srs Medical Systems, Llc | Urodynamic investigation apparatus, system, and methods |
US11759601B2 (en) | 2018-02-22 | 2023-09-19 | Srs Medical Systems, Llc | Urodynamic investigation apparatus, system and methods |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |