GB1374833A - Backflow preventors - Google Patents

Backflow preventors

Info

Publication number
GB1374833A
GB1374833A GB1671772A GB1671772A GB1374833A GB 1374833 A GB1374833 A GB 1374833A GB 1671772 A GB1671772 A GB 1671772A GB 1671772 A GB1671772 A GB 1671772A GB 1374833 A GB1374833 A GB 1374833A
Authority
GB
United Kingdom
Prior art keywords
diaphragm
cap
assembly
anchors
april
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
GB1671772A
Other languages
English (en)
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.)
Pegler Hattersley Ltd
Original Assignee
Pegler Hattersley Ltd
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 Pegler Hattersley Ltd filed Critical Pegler Hattersley Ltd
Publication of GB1374833A publication Critical patent/GB1374833A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
    • E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
    • E03C1/02—Plumbing installations for fresh water
    • E03C1/10—Devices for preventing contamination of drinking-water pipes, e.g. means for aerating self-closing flushing valves
    • E03C1/106—Devices for preventing contamination of drinking-water pipes, e.g. means for aerating self-closing flushing valves using two or more check valves
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
    • E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
    • E03C1/02—Plumbing installations for fresh water
    • E03C1/10—Devices for preventing contamination of drinking-water pipes, e.g. means for aerating self-closing flushing valves
    • E03C1/108—Devices for preventing contamination of drinking-water pipes, e.g. means for aerating self-closing flushing valves having an aerating valve
    • 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
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/10—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit
    • F16K11/105—Three-way check or safety valves with two or more closure members

Landscapes

  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Check Valves (AREA)
  • Safety Valves (AREA)
GB1671772A 1971-04-20 1972-04-11 Backflow preventors Expired GB1374833A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NZ16342671 1971-04-20

Publications (1)

Publication Number Publication Date
GB1374833A true GB1374833A (en) 1974-11-20

Family

ID=19916758

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1671772A Expired GB1374833A (en) 1971-04-20 1972-04-11 Backflow preventors

Country Status (3)

Country Link
FR (1) FR2138644B1 (OSRAM)
GB (1) GB1374833A (OSRAM)
NL (1) NL7205276A (OSRAM)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006027037A1 (de) * 2004-09-10 2006-03-16 Alfred Kärcher Gmbh & Co. Kg Rückflussverhinderer
CN1333191C (zh) * 2003-03-20 2007-08-22 李金友 可控止回阀
EP2801672A1 (de) * 2013-05-07 2014-11-12 Honeywell Technologies Sarl Systemtrenner
CN110360345A (zh) * 2019-07-26 2019-10-22 黄洪刚 一种防冲击三通减压阀
CN112747146A (zh) * 2021-01-27 2021-05-04 谢家福 多阀门出水器

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1333191C (zh) * 2003-03-20 2007-08-22 李金友 可控止回阀
WO2006027037A1 (de) * 2004-09-10 2006-03-16 Alfred Kärcher Gmbh & Co. Kg Rückflussverhinderer
EP2801672A1 (de) * 2013-05-07 2014-11-12 Honeywell Technologies Sarl Systemtrenner
CN110360345A (zh) * 2019-07-26 2019-10-22 黄洪刚 一种防冲击三通减压阀
CN112747146A (zh) * 2021-01-27 2021-05-04 谢家福 多阀门出水器

Also Published As

Publication number Publication date
NL7205276A (OSRAM) 1972-11-29
DE2218646A1 (de) 1972-11-16
FR2138644B1 (OSRAM) 1973-07-13
DE2218646B2 (de) 1975-11-13
FR2138644A1 (OSRAM) 1973-01-05

Similar Documents

Publication Publication Date Title
US4013089A (en) Back flow preventer valve
US3580275A (en) Valve
US4194522A (en) Air pressure regulator
US3782410A (en) Valve
US3636969A (en) Relief and unloading valve
GB1412729A (en) Valve
GB1104424A (en) Liquid flush control valves and pistons therefor
GB1392421A (en) Fluidpressure control valve assembly
GB1024524A (en) Pressure protection valve
US3943975A (en) Solenoid operated pilot controlled valve
GB1490553A (en) Fluid flow apparatus
US3196890A (en) Double acting check valve
GB1418100A (en) Safety cut-off valve
GB1283770A (en) Relief valve
GB1345641A (en) Flow control valve with closure sealing ring
GB1374833A (en) Backflow preventors
FR1597978A (OSRAM)
US3217740A (en) Relief valve having partial balancing arrangement
US3675896A (en) Valve including resilient seat washer with abutting rigid annular washer
US2498482A (en) Check valve device
GB1122316A (en) Improvements in fluid valve devices
GB1393450A (en) Combined over-and-under pressure relief valves
GB1446704A (en) Valves
US3289692A (en) Spring adjusting means for a pressure operated valve
GB1023879A (en) Valve and flow controller provided with said valve

Legal Events

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