GB454546A - Improvements in or relating to shut-off valves - Google Patents
Improvements in or relating to shut-off valvesInfo
- Publication number
- GB454546A GB454546A GB1037536A GB1037536A GB454546A GB 454546 A GB454546 A GB 454546A GB 1037536 A GB1037536 A GB 1037536A GB 1037536 A GB1037536 A GB 1037536A GB 454546 A GB454546 A GB 454546A
- Authority
- GB
- United Kingdom
- Prior art keywords
- piston
- ring
- valve
- cap
- spindle
- 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
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
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/22—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution
- F16K3/24—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members
- F16K3/243—Packings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
- Sliding Valves (AREA)
- Fluid-Damping Devices (AREA)
Abstract
454,546. Valve closure members. BUCKHAM, F., Bridge Wharf, Chalk Farm Road, London. April 8, 1936, No. 10375. [Class 135] In a stop valve having a shut-off piston provided with an expansible sealing-ring 32 located between piston members 29, 38 loose on the valve spindle 23, the longitudinal movement of the spindle to move the piston from the shut-off to the open position is also utilized to impart relative axial movement to the piston members 29, 38 whereby the sealing- ring is expanded in both end positions of the piston. The shut-off piston comprises a head having a nose piece 30 and a reduced portion 29 embraced by the sealing-ring 32, which is of resilient material such as compressed fibre. A pressure-cap 38 surmounts the end face of the ring 32. The piston head 29 and the cap 38 are capable of movement relative to the threaded valve-actuating spindle 23, a reduced portion 23<a> of which has two fixed collars 34, 35 between which the spindle is engaged by two radially slotted thrust plates 36, 39 secured by screws to the head 29 and cap 38 respectively. In closing the valve, the nose 30 is arrested by a ledge 31 in the valve casing, the ring 32, which then occupies the throat 12, being expanded into sealing engagement therewith by the cap 38 pressed inwardly by the spindle 23 acting through the collar 35 and the plate 39. When the valve is opened, the pressure on the cap 38 and hence on the ring 32 is immediately relieved and remains so relieved until the plate 39 abuts a rib 43 under the cover 19, whereupon the collar 34 acts on the head 29 through the thrust plate 36 to expand the sealing-ring against the throat 22 and so seal off the chamber 20 containing the stuffing box 27, from the controlled fluid. The cap 38 has a vertical slot engaged by a radial screw in the plate 36 to prevent it rotating relative to the head 29. The passage 16 in which the shut-off piston travels is shown inclined to the main fluid passage, but it may be perpendicular thereto. The throats 12, 22 may be separate rings of gunmetal or other substantially non-corrodible alloy, or they may be integral with the valve casing. The leading edge 44 of the piston part 29 scrapes any deposit from the throat 12.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1037536A GB454546A (en) | 1936-04-08 | 1936-04-08 | Improvements in or relating to shut-off valves |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1037536A GB454546A (en) | 1936-04-08 | 1936-04-08 | Improvements in or relating to shut-off valves |
Publications (1)
Publication Number | Publication Date |
---|---|
GB454546A true GB454546A (en) | 1936-10-02 |
Family
ID=9966682
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1037536A Expired GB454546A (en) | 1936-04-08 | 1936-04-08 | Improvements in or relating to shut-off valves |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB454546A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2552991A (en) * | 1948-04-16 | 1951-05-15 | South Hosuton Machine Company | Valve assembly |
US2885177A (en) * | 1956-07-19 | 1959-05-05 | Helsing Jacob Linus | Water faucet valve |
US3064939A (en) * | 1959-09-08 | 1962-11-20 | Buckley Arthur Burton | Fluid flow valves |
US3198479A (en) * | 1962-06-04 | 1965-08-03 | Eugene C Greenwood | Metering and shut-off valve having straight-through flow characteristics |
US3211419A (en) * | 1960-02-12 | 1965-10-12 | Istag A G | Piston valve with spring pressed head |
GB2117493A (en) * | 1982-01-29 | 1983-10-12 | Scholle Corp | Apparatus and method for dispensing a liquid or viscous material |
-
1936
- 1936-04-08 GB GB1037536A patent/GB454546A/en not_active Expired
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2552991A (en) * | 1948-04-16 | 1951-05-15 | South Hosuton Machine Company | Valve assembly |
US2885177A (en) * | 1956-07-19 | 1959-05-05 | Helsing Jacob Linus | Water faucet valve |
US3064939A (en) * | 1959-09-08 | 1962-11-20 | Buckley Arthur Burton | Fluid flow valves |
US3211419A (en) * | 1960-02-12 | 1965-10-12 | Istag A G | Piston valve with spring pressed head |
US3198479A (en) * | 1962-06-04 | 1965-08-03 | Eugene C Greenwood | Metering and shut-off valve having straight-through flow characteristics |
GB2117493A (en) * | 1982-01-29 | 1983-10-12 | Scholle Corp | Apparatus and method for dispensing a liquid or viscous material |
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