IT1271225B - Pneumatic actuation device for valve elements and the like - Google Patents
Pneumatic actuation device for valve elements and the likeInfo
- Publication number
- IT1271225B IT1271225B ITMI941976A ITMI941976A IT1271225B IT 1271225 B IT1271225 B IT 1271225B IT MI941976 A ITMI941976 A IT MI941976A IT MI941976 A ITMI941976 A IT MI941976A IT 1271225 B IT1271225 B IT 1271225B
- Authority
- IT
- Italy
- Prior art keywords
- piston
- travel
- pistons
- actuation device
- pneumatic actuation
- Prior art date
Links
- 230000001105 regulatory effect Effects 0.000 abstract 2
Abstract
A pneumatic actuation device for the shutter of a valve element comprising a body including a chamber in which a first piston and a second piston move in opposite directions, the pistons having rack type toothings able to engage with a pinion which is rigidly mounted on a shaft able to be connected to a shutter of a valve element which is supposed to be actuated, first means of regulating the end travel in the direction of opening movement of the pistons, these means being inserted in the body at its first end, being adjustable externally to the body and able to lock the first piston in its travel, second means of adjustment of the end travel in the direction of closing movement of the pistons, these means being inserted in the body at its second end, being adjustable externally and able to block the second piston in its travel, characterised in that these second means of regulating the end travel in the closing direction of the pistons are comprised of an adjustment dowel inserted in the body through a cavity, the dowel being engaged in a threaded bushing so that it can move relative to it and at the same time drive it in rotation, the bushing being inserted in the first piston such that, by rotating, it changes its own position on the piston and is able to come up flush against said pinion. <IMAGE>
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITMI941976A IT1271225B (en) | 1994-09-28 | 1994-09-28 | Pneumatic actuation device for valve elements and the like |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITMI941976A IT1271225B (en) | 1994-09-28 | 1994-09-28 | Pneumatic actuation device for valve elements and the like |
Publications (3)
Publication Number | Publication Date |
---|---|
ITMI941976A0 ITMI941976A0 (en) | 1994-09-28 |
ITMI941976A1 ITMI941976A1 (en) | 1996-03-28 |
IT1271225B true IT1271225B (en) | 1997-05-27 |
Family
ID=11369612
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ITMI941976A IT1271225B (en) | 1994-09-28 | 1994-09-28 | Pneumatic actuation device for valve elements and the like |
Country Status (1)
Country | Link |
---|---|
IT (1) | IT1271225B (en) |
-
1994
- 1994-09-28 IT ITMI941976A patent/IT1271225B/en active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
ITMI941976A1 (en) | 1996-03-28 |
ITMI941976A0 (en) | 1994-09-28 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
0001 | Granted | ||
TA | Fee payment date (situation as of event date), data collected since 19931001 |
Effective date: 19970926 |