GB1507743A - Non-return valves - Google Patents

Non-return valves

Info

Publication number
GB1507743A
GB1507743A GB1726275A GB1726275A GB1507743A GB 1507743 A GB1507743 A GB 1507743A GB 1726275 A GB1726275 A GB 1726275A GB 1726275 A GB1726275 A GB 1726275A GB 1507743 A GB1507743 A GB 1507743A
Authority
GB
United Kingdom
Prior art keywords
chamber
port
chambers
diaphragm
passageway
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
GB1726275A
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.)
British Gas Corp
Original Assignee
British Gas Corp
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 British Gas Corp filed Critical British Gas Corp
Priority to GB1726275A priority Critical patent/GB1507743A/en
Publication of GB1507743A publication Critical patent/GB1507743A/en
Expired 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
    • F16K15/00—Check valves
    • F16K15/02—Check valves with guided rigid valve members
    • F16K15/021—Check valves with guided rigid valve members the valve member being a movable body around which the medium flows when the valve is open

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Valves (AREA)

Abstract

1507743 Valves BRITISH GAS CORP 22 June 1976 [25 April 1975] 17262/75 Heading F2V A valve comprises inlet and outlet chambers 3, 4 and means for closing a port 20 therebetween, said means consisting of a valve member 15 mounted on an axially slidable shaft 14 and operated by a flexible diaphragm fixed to the shaft 14 within a further chamber 2 and serving to close the port between the chambers 2, 3 when the port 20 is closed; a passageway 7 connects the chamber 2 on the side of the diaphragm remote from the chamber 3 with the chamber 4 and a perforated shield 18 is mounted within the chamber 3 around the port 20. In a second embodiment (Fig. 2, not shown) a second diaphragm is fixed across the port between the chambers 2, 3 and a second passageway connects the chamber 3 to the space between the two diaphragms.
GB1726275A 1976-06-22 1976-06-22 Non-return valves Expired GB1507743A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1726275A GB1507743A (en) 1976-06-22 1976-06-22 Non-return valves

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1726275A GB1507743A (en) 1976-06-22 1976-06-22 Non-return valves

Publications (1)

Publication Number Publication Date
GB1507743A true GB1507743A (en) 1978-04-19

Family

ID=10092118

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1726275A Expired GB1507743A (en) 1976-06-22 1976-06-22 Non-return valves

Country Status (1)

Country Link
GB (1) GB1507743A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0411930A2 (en) * 1989-08-04 1991-02-06 Leigh Stewart Products Limited Air spa or whirlpool bath system and non-return valve for use therein
EP0503239A1 (en) * 1991-03-15 1992-09-16 Ucosan B.V. Aerated bath

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0411930A2 (en) * 1989-08-04 1991-02-06 Leigh Stewart Products Limited Air spa or whirlpool bath system and non-return valve for use therein
EP0411930A3 (en) * 1989-08-04 1991-07-10 Leigh Stewart Products Limited Air spa or whirlpool bath system and non-return valve for use therein
EP0503239A1 (en) * 1991-03-15 1992-09-16 Ucosan B.V. Aerated bath
DE4108364A1 (en) * 1991-03-15 1992-09-17 Ucosan Bv TUB, ESPECIALLY SANITARY TUB, WITH AIR SPRAYER

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee