GB2210138B - Valve apparatus & systems for pneumatic pressure control - Google Patents

Valve apparatus & systems for pneumatic pressure control

Info

Publication number
GB2210138B
GB2210138B GB8722187A GB8722187A GB2210138B GB 2210138 B GB2210138 B GB 2210138B GB 8722187 A GB8722187 A GB 8722187A GB 8722187 A GB8722187 A GB 8722187A GB 2210138 B GB2210138 B GB 2210138B
Authority
GB
United Kingdom
Prior art keywords
systems
pressure control
pneumatic pressure
valve apparatus
valve
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 - Fee Related
Application number
GB8722187A
Other versions
GB2210138A (en
GB8722187D0 (en
Inventor
Brian Robert Weller
Donald James Reid
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 PLC
Original Assignee
British Gas PLC
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 PLC filed Critical British Gas PLC
Priority to GB8722187A priority Critical patent/GB2210138B/en
Publication of GB8722187D0 publication Critical patent/GB8722187D0/en
Publication of GB2210138A publication Critical patent/GB2210138A/en
Application granted granted Critical
Publication of GB2210138B publication Critical patent/GB2210138B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D16/00—Control of fluid pressure
    • G05D16/14—Control of fluid pressure with auxiliary non-electric power
    • G05D16/18—Control of fluid pressure with auxiliary non-electric power derived from an external source
    • G05D16/185—Control of fluid pressure with auxiliary non-electric power derived from an external source using membranes within the main valve
GB8722187A 1987-09-21 1987-09-21 Valve apparatus & systems for pneumatic pressure control Expired - Fee Related GB2210138B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8722187A GB2210138B (en) 1987-09-21 1987-09-21 Valve apparatus & systems for pneumatic pressure control

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8722187A GB2210138B (en) 1987-09-21 1987-09-21 Valve apparatus & systems for pneumatic pressure control

Publications (3)

Publication Number Publication Date
GB8722187D0 GB8722187D0 (en) 1987-10-28
GB2210138A GB2210138A (en) 1989-06-01
GB2210138B true GB2210138B (en) 1991-07-10

Family

ID=10624137

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8722187A Expired - Fee Related GB2210138B (en) 1987-09-21 1987-09-21 Valve apparatus & systems for pneumatic pressure control

Country Status (1)

Country Link
GB (1) GB2210138B (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1019937A (en) * 1962-02-23 1966-02-09 Hallarydsverken Ab Improvements in arrangements for remote-control of fluid-control valves
GB2166360A (en) * 1984-09-22 1986-05-08 Cestradent Limited Anaesthetic gas apparatus

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1019937A (en) * 1962-02-23 1966-02-09 Hallarydsverken Ab Improvements in arrangements for remote-control of fluid-control valves
GB2166360A (en) * 1984-09-22 1986-05-08 Cestradent Limited Anaesthetic gas apparatus

Also Published As

Publication number Publication date
GB2210138A (en) 1989-06-01
GB8722187D0 (en) 1987-10-28

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Legal Events

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

Effective date: 20030921