GB586166A - Back siphonage prevention, anti-backflow and vacuum breaking valve and method of operation - Google Patents

Back siphonage prevention, anti-backflow and vacuum breaking valve and method of operation

Info

Publication number
GB586166A
GB586166A GB12724/44A GB1272444A GB586166A GB 586166 A GB586166 A GB 586166A GB 12724/44 A GB12724/44 A GB 12724/44A GB 1272444 A GB1272444 A GB 1272444A GB 586166 A GB586166 A GB 586166A
Authority
GB
United Kingdom
Prior art keywords
valve
diaphragm
pipe
outlet
open
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
GB12724/44A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB586166A publication Critical patent/GB586166A/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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00—Water conservation; Efficient water supply; Efficient water use
    • Y02A20/20—Controlling water pollution; Waste water treatment

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Check Valves (AREA)

Abstract

586,166. Fluid - actuated valves. CARLTON, F., and SNYDER, L. L. July 4, 1944, No. 12724. Convention date, June 22,. 1943. [Class 135] A valve arrangement for preventing backflow or back-siphonage in a pipe system, such as the domestic supply of water to a building or the supply of water to an industrial plant, comprises a valve C actuated by a double diaphragm 49, 50 to control the flow from the inlet 33 through chambers 42, 611 and 88 to an outlet 122<1>. The inlet pressure acts on the diaphragm 49 to open the valve C whilst the outlet pressure from 1221 acts through a pipe 129 above the diaphragm 50 tending to close it. The effective area of diaphragm 50 is greater than diaphragm 49 so that a pressure differential is maintained across the valve. From chamber 61<1> to the outlet the flow passes a normally open valve E and a hinged check valve B, both of which close on back-flow conditions occurring, together with the valve C, the valve E being actuated by the outlet pressure acting through a pipe 130 on a diaphragm 101 against the inlet pressure on a diaphragm 104 through pipe 131, these diaphragms being secured to a tubular member 74 which carries the valve E. This member 74 also carries a relief valve F which opens to relieve any pressure in chamber 88, by leakage past check valve B, when the valve E is closed. Under these conditions an air intake valve D co-operating with the top of tube 74 is also opened to place the chamber 61<1> open 'to atmosphere through a pipe 141. Thus, any possibility of back-flow from the outlet 122<1>, which may be contaminated, to the supply line 33 is prevented. A vacuum breaking valve A for the supply line is also provided which comprises a sleeve member 18 supported by a diaphragm 16 and seating on a seat 20, and also carrying a check valve 38. The inlet pressure acts on one side of this diaphragm to maintain the valve 18 closed, but the other side of the diaphragm is open to atmosphere through openings 23 so that in the event of sub-atmospheric conditions existing in the line 33, the atmospheric pressure acts on the diaphragm 16 to open valve 18 to relieve such conditions. If any vacuum in line 33 should extend to chambers 42 and 61<1> it will be relieved by the air intake valve D.
GB12724/44A 1943-06-22 1944-07-04 Back siphonage prevention, anti-backflow and vacuum breaking valve and method of operation Expired GB586166A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US586166XA 1943-06-22 1943-06-22

Publications (1)

Publication Number Publication Date
GB586166A true GB586166A (en) 1947-03-10

Family

ID=22017907

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12724/44A Expired GB586166A (en) 1943-06-22 1944-07-04 Back siphonage prevention, anti-backflow and vacuum breaking valve and method of operation

Country Status (1)

Country Link
GB (1) GB586166A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2706488A (en) * 1950-11-30 1955-04-19 Hersey Mfg Company Anti-back-flow device
US3483884A (en) * 1967-08-21 1969-12-16 Sullivan Valve & Eng Co Back flow prevention system
WO1984002545A1 (en) * 1982-12-21 1984-07-05 Gruenbeck Josef Wasseraufb Pipe separator
EP0351319A1 (en) * 1988-07-15 1990-01-17 Socla Fluidum actuating device and back flow preventer containing same
EP0579355A1 (en) * 1992-04-21 1994-01-19 Btg International Limited Non-return valves

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2706488A (en) * 1950-11-30 1955-04-19 Hersey Mfg Company Anti-back-flow device
US3483884A (en) * 1967-08-21 1969-12-16 Sullivan Valve & Eng Co Back flow prevention system
WO1984002545A1 (en) * 1982-12-21 1984-07-05 Gruenbeck Josef Wasseraufb Pipe separator
US4800918A (en) * 1982-12-21 1989-01-31 Grunbeck Wasseraufbereitung Gmbh Tube separator
AT395258B (en) * 1982-12-21 1992-11-10 Gruenbeck Josef Wasseraufb TUBE DISCONNECTOR
EP0351319A1 (en) * 1988-07-15 1990-01-17 Socla Fluidum actuating device and back flow preventer containing same
FR2634268A1 (en) * 1988-07-15 1990-01-19 Socla VALVE, CONTROLLER FOR FLUID AND APPARATUS FOR PROTECTING AGAINST FLUID RETURNS HAVING THE SAME
US5056549A (en) * 1988-07-15 1991-10-15 Socla Valve fluid control device and fluid backflow protection device comprising same
EP0579355A1 (en) * 1992-04-21 1994-01-19 Btg International Limited Non-return valves

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