FIELD: pipeline fittings, particularly gate valves or sliding valves.
SUBSTANCE: shutoff device comprises body and shutoff member arranged in the body and formed as two tore rings of elastic material. The tore rings are fixedly connected one to another by bar and filled with compressed medium. Each body end is connected with inlet and outlet pipes by connection pipes. The device is provided with two-way slider. The slider opens or closes connection pipe upon shutoff device activation or deactivation. The branch pipe is provided with throttle to create pressure drop from both sides of shutoff member. The pressure drop is enough for device switching.
EFFECT: increased operational reliability.
1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| SHUTOFF DEVICE FOR PIPELINE BLOCKING | 2004 |
|
RU2267046C1 |
| PIPELINE SHUT-OFF DEVICE (VERSIONS) | 2008 |
|
RU2359161C1 |
| HOSE VALVE | 2005 |
|
RU2299373C2 |
| SHUT-OFF DEVICE FOR SHUTTING-OFF PIPE LINES | 2004 |
|
RU2278312C1 |
| CUT-OFF DEVICE | 0 |
|
SU1815452A1 |
| CLOSING DEVICE | 1990 |
|
RU2020346C1 |
| HOSE VALVE | 2006 |
|
RU2309318C1 |
| SHUT-OFF DEVICE | 1990 |
|
RU2015437C1 |
| VALVING UNIT | 1990 |
|
RU2016313C1 |
| IN-PIPE TESTING APPARATUS MOTION CONTROL METHOD AND DEVICE TO THIS EFFECT | 2006 |
|
RU2329432C1 |
