FIELD: valving systems.
SUBSTANCE: seal comprises sealing chamber made of cylindrical and conical sections. The angle at the cone top is equal to about 30° and its height ranges within the half-height of the sealing chamber.
EFFECT: enhanced reliability.
1 cl, 1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| HEAT-RESISTANT GATE VALVE | 2010 |
|
RU2443926C2 |
| SUBSURFACE PUMP ROD SEALING DEVICE | 2000 |
|
RU2201529C2 |
| WELL MOUTH PACKER DEVICE | 2002 |
|
RU2231621C2 |
| NEEDLE VALVE FOR PRESSURE GAGE | 2012 |
|
RU2495230C1 |
| DEVICE FOR SEPARATION OF INDIVIDUAL SECTIONS OF WELL SHAFT | 2015 |
|
RU2588021C1 |
| BELLOW BALL VALVE WITH UPPER CONNECTOR | 2012 |
|
RU2486394C2 |
| SHAFT SEAL | 0 |
|
SU1332092A2 |
| REGULATING DEVICE | 1999 |
|
RU2168090C2 |
| GATE VALVES | 2014 |
|
RU2578548C1 |
| DYNAMIC LOADED PACKING WITH LOW FRICTION FACTOR | 2007 |
|
RU2438062C2 |
