GB286893A - Improvements relating to relief or safety valves - Google Patents

Improvements relating to relief or safety valves

Info

Publication number
GB286893A
GB286893A GB829027A GB829027A GB286893A GB 286893 A GB286893 A GB 286893A GB 829027 A GB829027 A GB 829027A GB 829027 A GB829027 A GB 829027A GB 286893 A GB286893 A GB 286893A
Authority
GB
United Kingdom
Prior art keywords
holes
piston
valve
closed
relief
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
GB829027A
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.)
ELECTRO MECHANICAL BRAKE COMPA
Original Assignee
ELECTRO MECHANICAL BRAKE COMPA
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 ELECTRO MECHANICAL BRAKE COMPA filed Critical ELECTRO MECHANICAL BRAKE COMPA
Priority to GB829027A priority Critical patent/GB286893A/en
Publication of GB286893A publication Critical patent/GB286893A/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
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
    • F16K17/08—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with special arrangements for providing a large discharge passage
    • F16K17/082—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with special arrangements for providing a large discharge passage with piston

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Safety Valves (AREA)

Abstract

286,893. Electro-Mechanical Brake Co., Ltd., and Smith, S. March 25, 1927. Safety-valves.-A relief valve comprises a cylindrical body a closed at one end containing a piston valve c formed with a peripheral groove e and a pair of rings f, g. One end of the piston, which is loaded by a spring j, is provided with a rubber or leather washer d adapted to engage a seat b of smaller diameter than the cylinder. The cylinder wall has two series of holes h, i arranged so that as the valve moves towards its closed position the holes 1 are closed in advance of the holes h to allow pressure to leak to the back of the piston to enable the valve to close at an higher pressure than would be the case if the spring alone were relied on.
GB829027A 1927-03-25 1927-03-25 Improvements relating to relief or safety valves Expired GB286893A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB829027A GB286893A (en) 1927-03-25 1927-03-25 Improvements relating to relief or safety valves

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB829027A GB286893A (en) 1927-03-25 1927-03-25 Improvements relating to relief or safety valves

Publications (1)

Publication Number Publication Date
GB286893A true GB286893A (en) 1928-03-15

Family

ID=9849676

Family Applications (1)

Application Number Title Priority Date Filing Date
GB829027A Expired GB286893A (en) 1927-03-25 1927-03-25 Improvements relating to relief or safety valves

Country Status (1)

Country Link
GB (1) GB286893A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19717922A1 (en) * 1997-04-28 1998-10-29 Schwaebische Huettenwerke Gmbh Two-stage control valve
CN102410119A (en) * 2011-08-16 2012-04-11 沪东重机有限公司 Fuel oil back pressure valve for marine diesel engine
CN102797607A (en) * 2012-08-30 2012-11-28 上海中船三井造船柴油机有限公司 Back pressure valve for fuel inlet/return pipeline of marine low-speed diesel engine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19717922A1 (en) * 1997-04-28 1998-10-29 Schwaebische Huettenwerke Gmbh Two-stage control valve
CN102410119A (en) * 2011-08-16 2012-04-11 沪东重机有限公司 Fuel oil back pressure valve for marine diesel engine
CN102797607A (en) * 2012-08-30 2012-11-28 上海中船三井造船柴油机有限公司 Back pressure valve for fuel inlet/return pipeline of marine low-speed diesel engine

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