GB498020A - Improvements in or relating to cocks or valves - Google Patents

Improvements in or relating to cocks or valves

Info

Publication number
GB498020A
GB498020A GB1845237A GB1845237A GB498020A GB 498020 A GB498020 A GB 498020A GB 1845237 A GB1845237 A GB 1845237A GB 1845237 A GB1845237 A GB 1845237A GB 498020 A GB498020 A GB 498020A
Authority
GB
United Kingdom
Prior art keywords
valve
vacuum
chamber
gland
sealing
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
GB1845237A
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
Priority to GB1845237A priority Critical patent/GB498020A/en
Publication of GB498020A publication Critical patent/GB498020A/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
    • F16K41/00—Spindle sealings
    • F16K41/006—Spindle sealings by establishing an under-pressure

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Valves (AREA)

Abstract

498,020. Valve accessories; stuffing- boxes. REAVELL, B. N. July 2, 1937, No. 18452. [Class 135] [Also in Group XXVI] A cock or valve for pipelines or apparatus working under a high vacuum is provided with a vacuum chamber d arranged between the valve member or plug b and a liquid seal g located above a gland f surrounding the valve stem so that any leakage of the sealing liquid passes into the vacuum chamber and thence by a connection e to the main vacuum system without entering the pipe-line or other apparatus. The valve stem is provided with a collar c or is reduced in diameter to provide the chamber d. The cup h for the oil seal is integral with the valve casing q. The vacuum or negative pressure in the valve is balanced with that in the chamber d so that there is no tendency for fluid to pass from one to the other. According to the Provisional Specification a similar arrangement may be applied to the sealing of the gland of a vacuum pump.
GB1845237A 1937-07-02 1937-07-02 Improvements in or relating to cocks or valves Expired GB498020A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1845237A GB498020A (en) 1937-07-02 1937-07-02 Improvements in or relating to cocks or valves

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1845237A GB498020A (en) 1937-07-02 1937-07-02 Improvements in or relating to cocks or valves

Publications (1)

Publication Number Publication Date
GB498020A true GB498020A (en) 1939-01-02

Family

ID=10112677

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1845237A Expired GB498020A (en) 1937-07-02 1937-07-02 Improvements in or relating to cocks or valves

Country Status (1)

Country Link
GB (1) GB498020A (en)

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