FIELD: mining art; petroleum and gas production industry; petroleum and gas producing industry. SUBSTANCE: plug cock is designed for use in cut-off devices of entrance equipment in petroleum and gas production wells. Plug cock has body with crossing for passage of liquid and arrangement of cylindrical plug, respectively. Said plug is controlled by drive made integral with plug. Cylindrical plug is coupled to body by means of balls positions in combined circular spherical grooves which are made at one end of cylindrical plug and in body, respectively. Body is provided with pressure cover from side of other end of plug. Pressure cover couples body to plug by adjusting bolt through balls positioned between circular surface of body, plug and pressure cover to facilitate plug rotation. EFFECT: reduced plug rotation force. 1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| PLUG-TYPE COCK | 2002 |
|
RU2249743C2 |
| UNIVERSAL CASING HEAD FOR CONNECTIONS OF CASING STRINGS ON WELLHEAD | 1999 |
|
RU2173764C2 |
| LOCKING DEVICE | 2009 |
|
RU2454585C2 |
| LOCKING DEVICE | 2010 |
|
RU2447343C2 |
| ARRANGEMENT OF WELL-HEAD EQUIPMENT | 1996 |
|
RU2176722C2 |
| HOLE-MOUTH COMPENSATOR | 2006 |
|
RU2334145C1 |
| CASING-HEAD STUFFING BOX | 2001 |
|
RU2205307C2 |
| SHUTOFF DEVICE OF WELLHEAD EQUIPMENT | 1996 |
|
RU2168604C2 |
| CUT-OFF DEVICE | 2003 |
|
RU2261389C2 |
| COMPENSATOR | 2003 |
|
RU2267679C2 |
