GB847314A - Fluid pressure actuated fluid flow control valves and operative assemblies of such valves - Google Patents

Fluid pressure actuated fluid flow control valves and operative assemblies of such valves

Info

Publication number
GB847314A
GB847314A GB20235/58A GB2023558A GB847314A GB 847314 A GB847314 A GB 847314A GB 20235/58 A GB20235/58 A GB 20235/58A GB 2023558 A GB2023558 A GB 2023558A GB 847314 A GB847314 A GB 847314A
Authority
GB
United Kingdom
Prior art keywords
valves
sample gas
controls
flow
flow control
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
Application number
GB20235/58A
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.)
Schneider Electric Systems USA Inc
Original Assignee
Foxboro 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 Foxboro Co filed Critical Foxboro Co
Publication of GB847314A publication Critical patent/GB847314A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/22—Devices for withdrawing samples in the gaseous state
    • 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
    • F16K7/10—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with inflatable member
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/22—Devices for withdrawing samples in the gaseous state
    • G01N1/26—Devices for withdrawing samples in the gaseous state with provision for intake from several spaces

Landscapes

  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Biomedical Technology (AREA)
  • Molecular Biology (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Mechanical Engineering (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

<PICT:0847314/III/1> <PICT:0847314/III/2> For controlling the inlet and outlet passages 12, 13 of a chamber 11, Fig. 1, a flexible sleeve 14 slightly stretched over a support member 15 is inflated to make contact with the wall of the chamber by supplying air through a bore 22 in the support member. Such a control may be used for transferring a fixed volume of fluid from a sample flow to a carrier flow, for example, in gaschromatography. In Fig. IV a fixed-volume conduit FV has, at one end, a pair of controls a and b and at its other end another pair of controls c and d. Controls b and d are initially closed so that sample gas S flows from a through the fixed volume conduit to c, a and c are then shut by an operating pressure OP to isolate a slug of sample gas and b and d are opened so that the carrier gas flow C flushes the slug of sample gas to a chromatographic column. Devices are described in Figs. V, VI wherein the carrier gas flow and the sample gas flow can proceed through the device at the same time without mixing.
GB20235/58A 1957-07-11 1958-06-24 Fluid pressure actuated fluid flow control valves and operative assemblies of such valves Expired GB847314A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US847314XA 1957-07-11 1957-07-11

Publications (1)

Publication Number Publication Date
GB847314A true GB847314A (en) 1960-09-07

Family

ID=22186870

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20235/58A Expired GB847314A (en) 1957-07-11 1958-06-24 Fluid pressure actuated fluid flow control valves and operative assemblies of such valves

Country Status (1)

Country Link
GB (1) GB847314A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2690724A1 (en) * 1992-04-30 1993-11-05 Catin Noel Device for interconnecting at least two pipes carrying a liquid.
CN103047291A (en) * 2012-12-28 2013-04-17 扬州锻压机床股份有限公司 Lubricating oil fine-tuning and throttling structure of precise hydrostatic bearing

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2690724A1 (en) * 1992-04-30 1993-11-05 Catin Noel Device for interconnecting at least two pipes carrying a liquid.
WO1993022589A1 (en) * 1992-04-30 1993-11-11 Catin Noel Device for interconnection of at least two liquid conveying conduits
CN103047291A (en) * 2012-12-28 2013-04-17 扬州锻压机床股份有限公司 Lubricating oil fine-tuning and throttling structure of precise hydrostatic bearing
CN103047291B (en) * 2012-12-28 2015-08-19 扬州锻压机床股份有限公司 A kind of precision static pressure bearing oil fine adjustment flow structure

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