GB1221989A - Stem construction for rising stem-gate valve - Google Patents
Stem construction for rising stem-gate valveInfo
- Publication number
- GB1221989A GB1221989A GB3799168A GB3799168A GB1221989A GB 1221989 A GB1221989 A GB 1221989A GB 3799168 A GB3799168 A GB 3799168A GB 3799168 A GB3799168 A GB 3799168A GB 1221989 A GB1221989 A GB 1221989A
- Authority
- GB
- United Kingdom
- Prior art keywords
- gate
- bonnet
- lubricant
- actuator
- piston
- 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
- F16K3/30—Details
- F16K3/36—Features relating to lubrication
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Driven Valves (AREA)
Abstract
1,221,989. Valves. R. S. YOLPIN. 8 Aug., 1968, No. 37991/68. Heading F2V. In a gate valve having a main housing 10 and a bonnet 17, actuation of the gate 23 is effected by a shaft 26 which is non-rotatably reciprocable by an actuator 29, 32, the shaft having slidably mounted thereon a seal piston 46 which serves to isolate the actuator from line pressure and furthermore, to define within the bonnet a lubricant chamber 18a, 52, 51, 30, 53, 19a to which lubricant may be supplied through a fitting 56 and from which the same may be released via a vent 58. The piston 46 attains a position within the bonnet at which the fluid forces acting on its opposite faces and due to line pressure and to the lubricant are equal. The actuator has a bearing 43, 44 which is disposed, with slight clearance, within a gap defined by two bonnet shoulders 40, 41. The gate is formed with a notch 65 which, when the gate is in its lowered, valve closed position, serves to bring into communication annular seat grooves 63, 64 and corresponding passages 61, 62, the passages leading from reservoirs 59 60 which contain lubricant sealant and pistons 67, 68, which like piston 46, are responsive to line pressure, such pressure being applied to the pistons by virtue of leakage at the upstream side of the gate when the latter is in the closed position.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3799168A GB1221989A (en) | 1968-08-08 | 1968-08-08 | Stem construction for rising stem-gate valve |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3799168A GB1221989A (en) | 1968-08-08 | 1968-08-08 | Stem construction for rising stem-gate valve |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1221989A true GB1221989A (en) | 1971-02-10 |
Family
ID=10400444
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3799168A Expired GB1221989A (en) | 1968-08-08 | 1968-08-08 | Stem construction for rising stem-gate valve |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1221989A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2311835A (en) * | 1996-04-03 | 1997-10-08 | Fmc Corp | Lubricating valve stems |
CN109538813A (en) * | 2018-12-11 | 2019-03-29 | 中国船舶重工集团公司第七〇九研究所 | A kind of redundant drive underwater gate valve executing agency |
CN111022680A (en) * | 2019-12-31 | 2020-04-17 | 国威阀门制造有限公司 | Soft sealing gate valve |
-
1968
- 1968-08-08 GB GB3799168A patent/GB1221989A/en not_active Expired
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2311835A (en) * | 1996-04-03 | 1997-10-08 | Fmc Corp | Lubricating valve stems |
GB2311835B (en) * | 1996-04-03 | 1998-05-06 | Fmc Corp | Lubrication system for a gate valve stem |
SG102523A1 (en) * | 1996-04-03 | 2004-03-26 | Fmc Corp | Grease injection system for a gate valve stem |
CN109538813A (en) * | 2018-12-11 | 2019-03-29 | 中国船舶重工集团公司第七〇九研究所 | A kind of redundant drive underwater gate valve executing agency |
CN109538813B (en) * | 2018-12-11 | 2023-09-12 | 中国船舶重工集团公司第七一九研究所 | Redundant drive underwater gate valve actuating mechanism |
CN111022680A (en) * | 2019-12-31 | 2020-04-17 | 国威阀门制造有限公司 | Soft sealing gate valve |
CN111022680B (en) * | 2019-12-31 | 2022-05-17 | 国威阀门制造有限公司 | Soft sealing gate valve |
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