FIELD: mechanics.
SUBSTANCE: invention relates to stop valves production, particularly to pipeline stop valves to be used in petroleum, gas and chemical industries. The sliding shutter incorporates a casing and seats spring-loaded on both sides, the seats being furnished with a forced pull-back appliance. The shutter recesses house rotary blocks enclosed by cheek recesses with shutter closed. The said cheeks are arranged on the seat necks.
EFFECT: higher cyclic durability of the shutter.
3 cl, 4 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| TAP | 2006 |
|
RU2328645C1 |
| PIPELINE FITTING SEAT | 2007 |
|
RU2353844C2 |
| PIPELINE FITTINGS GATE | 2004 |
|
RU2307968C2 |
| METHOD FOR ASSEMBLY OF WEDGE GATE VALVE SHUTTER UNIT | 2006 |
|
RU2346198C2 |
| LOCKING UNIT OF PIPELINE FITTING WITH CHANGEABLE SEALING RINGS | 2006 |
|
RU2315219C2 |
| WEDGE VALVE GATE UNIT | 2012 |
|
RU2518704C2 |
| PIPELINE VALVE BODY | 2011 |
|
RU2478858C2 |
| SHUTOFF AND CONTROL GATE VALVE | 2012 |
|
RU2506483C2 |
| SHUTTER | 1997 |
|
RU2157936C2 |
| WEDGE-TYPE GATE VALVE | 2006 |
|
RU2330203C2 |
