GB190100233A - Improvements in Valves for Boilers and other Purposes. - Google Patents

Improvements in Valves for Boilers and other Purposes.

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Publication number
GB190100233A
GB190100233A GB190100233DA GB190100233A GB 190100233 A GB190100233 A GB 190100233A GB 190100233D A GB190100233D A GB 190100233DA GB 190100233 A GB190100233 A GB 190100233A
Authority
GB
United Kingdom
Prior art keywords
valve
valves
fletcher
collar
wheel
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
Inventor
James Ashton Fletcher
Samuel Fletcher
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
Application granted granted Critical
Publication of GB190100233A publication Critical patent/GB190100233A/en
Expired legal-status Critical Current

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  • Check Valves (AREA)

Abstract

233. Fletcher, J. A., and Fletcher, S. Jan. 3. Check valves; safety-valves.-Relates to valves of the kind described in Specification No. 6831, A.D. 1899, and especially suitable for preventing a backward flow of steam in boiler installations. The lift valve e is balanced by a counterweight 4, which is carried by a forked lever y, pivoted at x and engaging with the collar g on the valve. By means of the hand-wheel r and its screwed spindle o, which abuts on a sleeve k having a square end h loosely fitting into the collar on the valve, the valve can be positively closed. The valve can only be opened when the spindle is raised, and when the boiler pressure in the inlet b exceeds the pressure in the outlet c. The balance-weight is enclosed in the casing to prevent tampering with it, and the haud-wheel &c. can be removed for repairs. The valve may be used as a safetyvalve The Provisional Specification describes a modification in which a bye-pass valve is used.
GB190100233D 1901-01-03 1901-01-03 Improvements in Valves for Boilers and other Purposes. Expired GB190100233A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB190100233T 1901-01-03

Publications (1)

Publication Number Publication Date
GB190100233A true GB190100233A (en) 1901-12-31

Family

ID=32363084

Family Applications (1)

Application Number Title Priority Date Filing Date
GB190100233D Expired GB190100233A (en) 1901-01-03 1901-01-03 Improvements in Valves for Boilers and other Purposes.

Country Status (1)

Country Link
GB (1) GB190100233A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100342165C (en) * 2005-01-12 2007-10-10 刘敬善 Multifunctional counterweight type balance valve

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100342165C (en) * 2005-01-12 2007-10-10 刘敬善 Multifunctional counterweight type balance valve

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