GB540020A - Improvements in safety valves - Google Patents

Improvements in safety valves

Info

Publication number
GB540020A
GB540020A GB558240A GB558240A GB540020A GB 540020 A GB540020 A GB 540020A GB 558240 A GB558240 A GB 558240A GB 558240 A GB558240 A GB 558240A GB 540020 A GB540020 A GB 540020A
Authority
GB
United Kingdom
Prior art keywords
valve
recess
spindle
conical
sleeve
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
GB558240A
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.)
JOHN HENDRY GIBSON
Babcock International Ltd
Original Assignee
JOHN HENDRY GIBSON
Babcock and Wilcox 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 JOHN HENDRY GIBSON, Babcock and Wilcox Ltd filed Critical JOHN HENDRY GIBSON
Priority to GB558240A priority Critical patent/GB540020A/en
Publication of GB540020A publication Critical patent/GB540020A/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
    • F16K17/10—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 auxiliary valve for fluid operation of the main valve

Landscapes

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

Abstract

540,020. Safety-valves. BABCOCK & WILCOX, Ltd., and GIBSON, J. H. March 28, 1940, No. 5582. [Class 135] A safety-valve of the kind in which the lift is increased by the action of the fluid escaping between a flange on the valve member and a surrounding wall has adjustable byepass ports formed in the surrounding wall. In the form shown in Figs. 1 and 3 the valve member 1 has a convex lower surface, an annular seating face 38 and a conical side face terminating in an annular flange 32. The annular valve seat face is formed on the bottom of a conical recess 39 in a seat member secured in position by bolts 54 passing through lugs 541. The recess 39 is tapered at a smaller angle than the edge surface of the valve member and is connected to the seating surface 38 by a curved surface 56. In a modification the conical surface of the recess is interrupted by a cylindrical part. A ported sleeve 42 is mounted on the seat and is adapted to control bye-pass ports 34 leading from the conical recess. This sleeve is adjusted by a nut 48 housed iii a recess in a fitting 50 screwed to the valve casing to compress a packing engaging a spindle having a pin and slot connection with an arm 44 on the sleeve. The spindle 45 may have a flat indicating surface 52 and may cooperate with a stop secured to one of the bolts 54. A piston 8 subject to the pressure of the escaping fluid works in a liner 27 held in position by a fitting 31 and has a lost-motion connection with the valve spindle 6. The other side of the piston is vented to atmosphere through a passage 30. The valve is loaded by a spring 19 housed in a case 12 between two abutments 9, 20, the abutment 20 being adjusted by a screw 16 cooperating with a screwed bush 231 and limit ring 23. A cap 24 secured to the valve spindle by a padlocked cotter 25 covers the ends of the valve spindle and adjusting screw 16 and is connected with an easing lever 26.
GB558240A 1940-03-28 1940-03-28 Improvements in safety valves Expired GB540020A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB558240A GB540020A (en) 1940-03-28 1940-03-28 Improvements in safety valves

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB558240A GB540020A (en) 1940-03-28 1940-03-28 Improvements in safety valves

Publications (1)

Publication Number Publication Date
GB540020A true GB540020A (en) 1941-10-02

Family

ID=9798814

Family Applications (1)

Application Number Title Priority Date Filing Date
GB558240A Expired GB540020A (en) 1940-03-28 1940-03-28 Improvements in safety valves

Country Status (1)

Country Link
GB (1) GB540020A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2754842A (en) * 1952-06-25 1956-07-17 Hagiwara Noboru Pressure responsive pop valves
DE2649033A1 (en) * 1976-10-28 1978-05-03 Wella Ag Differential pressure overflow valve - has slotted guide tube for adjusting nut protrusion covered by transparent sealed sheet

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2754842A (en) * 1952-06-25 1956-07-17 Hagiwara Noboru Pressure responsive pop valves
DE2649033A1 (en) * 1976-10-28 1978-05-03 Wella Ag Differential pressure overflow valve - has slotted guide tube for adjusting nut protrusion covered by transparent sealed sheet

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