GB824810A - Improvements in fluid flow control valves - Google Patents
Improvements in fluid flow control valvesInfo
- Publication number
- GB824810A GB824810A GB22475/57A GB2247557A GB824810A GB 824810 A GB824810 A GB 824810A GB 22475/57 A GB22475/57 A GB 22475/57A GB 2247557 A GB2247557 A GB 2247557A GB 824810 A GB824810 A GB 824810A
- Authority
- GB
- United Kingdom
- Prior art keywords
- stem
- piston
- valve
- closure
- projections
- 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
- 239000012530 fluid Substances 0.000 title 1
- 238000006073 displacement reaction Methods 0.000 abstract 2
- 210000004907 gland Anatomy 0.000 abstract 1
- 230000003993 interaction Effects 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- 238000012856 packing Methods 0.000 abstract 1
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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/14—Actuating devices; Operating means; Releasing devices actuated by fluid for mounting on, or in combination with, hand-actuated valves
- F16K31/143—Actuating devices; Operating means; Releasing devices actuated by fluid for mounting on, or in combination with, hand-actuated valves the fluid acting on a piston
Abstract
824,810. Valves. COMPAGNIA ITALIANA WESTINGHOUSE FRENI E SEGNALI. July 16, 1957 [July 20, 1956], No. 22475/57. Class 135. A stem 8 with a hand wheel 9 is provided with a split thrust-bearing 12 and one or more helical projections 19 which register with one or more helical grooves 18 in the rod 17 of a piston 15 that is prevented from rotating by a pin 25; the stem ends with a multiple trapezoidal thread 29 which screws into a head 30 connected to a valve closure 32 via a split thrust-bearing 34 and a stem 31, the closure being in an hydraulic system 46, 47. Seals 16, 22, 24 and 28 are associated with the piston 15, rod 17 and stem 8, respectively, whilst further seals 27 coact with the pin 25; a stuffing-box comprising a packing gland 39 and gaskets 40 seals the stem 31, an opening 41 in the valve casing facilitating access to the stuffing-box. Counter-clockwise rotation of the hand wheel 9 causes the head 30 to screw on to the thread 29 and lift the closure 32 from its seat since the head 30 is prevented from rotating by a screw 36, and the stem 8 cannot undergo axial displacement due to the bearing 12; during rotation of the stem 8 the piston 15 is elevated because of the interaction of the projections 19 and grooves 18. Clockwise rotation of the hand wheel seats the closure 32 and restores the piston 15 to the position shown. The valve may be opened by supplying compressed air underneath the piston 15 and opening the space above the piston to atmosphere, the axial displacement of the piston 15 causing rotation of the stem 8 through the projections 19 and grooves 18; the valve is closed by reversing the pressure and atmospheric connections. The pitch of threads 29 may be chosen to ensure that the valve cannot be opened by pressure in the hydraulic system should the air supply fail when the valve is in the closed position. In a modification, the ends of the cylinder housing the piston 15 are interconnected by tie-rods whilst the stem 8 is keyed to a threaded member engaging a fixed threaded bush, the threaded member being integral with the stem 31.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT824810X | 1956-07-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB824810A true GB824810A (en) | 1959-12-02 |
Family
ID=11317883
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB22475/57A Expired GB824810A (en) | 1956-07-20 | 1957-07-16 | Improvements in fluid flow control valves |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB824810A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1202084B (en) * | 1961-11-17 | 1965-09-30 | Stamicarbon | Throttle valve that can be adjusted both by hand and by pressure medium |
| US3298659A (en) * | 1962-12-21 | 1967-01-17 | Cupedo Douwe Janse | Fluid power actuated butterfly valve or plug cock |
| US3993284A (en) * | 1975-06-26 | 1976-11-23 | Acf Industries, Incorporated | Connection of actuator cylinder housing to valve bonnet |
| GB2183010A (en) * | 1985-11-15 | 1987-05-28 | Burman & Sons Ltd | Valve actuator |
| GB2383115A (en) * | 2001-10-23 | 2003-06-18 | John Buchan | Ship safety remote controlled hydraulic valve actuation |
-
1957
- 1957-07-16 GB GB22475/57A patent/GB824810A/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1202084B (en) * | 1961-11-17 | 1965-09-30 | Stamicarbon | Throttle valve that can be adjusted both by hand and by pressure medium |
| US3298659A (en) * | 1962-12-21 | 1967-01-17 | Cupedo Douwe Janse | Fluid power actuated butterfly valve or plug cock |
| US3993284A (en) * | 1975-06-26 | 1976-11-23 | Acf Industries, Incorporated | Connection of actuator cylinder housing to valve bonnet |
| GB2183010A (en) * | 1985-11-15 | 1987-05-28 | Burman & Sons Ltd | Valve actuator |
| GB2383115A (en) * | 2001-10-23 | 2003-06-18 | John Buchan | Ship safety remote controlled hydraulic valve actuation |
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