Expanding Parallel Gate Valves With Rising Stem
This type of valves is used in the oilfield industry for drilling and production operations for nominal pressures of 700 bar (10 000 PSI).
Working medium: water, oil products, gases with a light corrosive action.
Operating and constructive characteristics :
Designed in accordance with the API specification 6A requirements.
The products are designed to perform according to the requirements of PR1 Performance Requirement Level and, on request, PSL1, PSL2 and PSL3 Product Specification Levels.
About Material class and Temperature classification, see Appendix A.
Valve type: full-bore
Body shape – round, forged
Closing element – parallel gate
Stem – ascending, provided with trapezoidal thread, being in no contact with the circulation fluid. The compensating rod anihilates the volume variation inner cavity during gate valve handling.
The bonnet is assembled to the body by thread.
The valve is connected to the pipe by flanges provided with 6Bx type sealing metallic rings.
Technical and constructive characteristics
( bar, PSI)
|n x d1||Weight
|2 1/16||521||152||494||250||200||158,8||8 x d22||175|
|2 9/16||565||153||584||300||232||184,2||8 x d26||225|
|3 1/16||619||154||647||430||270||215,9||8 x d30||280|
|4 1/16||670||155||776||630||315||259,8||8 x d32||565|
Working and testing regime
|10 000||10 000||15 000||10 000|
Body-bonnet sealing: metal-to-metal
Body-gate sealing: metal+ PTFE/metal
Stem-bonnet sealing: rubber sheet or PTFE.