Valves conf API-6A - Balanced Stem Expanding Gate Valves 912
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Balanced Stem Expanding Gate Valves 912 series
Description and operation:
The seats are pressed into the body with an O-ring into the back groove, while seal is of metal-to-metal type. Gate and seat replacement is possible, with the valve in line, without the need for special tools.
Upper and lower thrust bearings isolated from well fluid, minimizing torque.
Stem packing can be re-energized with valve under pressure. Stem packing TFE glass and carbon filled and soft packing.
The valve, body may be grease filled through suitable fittings provided on body (upper & lower). Sealing area may be greased through the suitable fittings provided on body (lateral).
Balance stem assure a significant reducing of the hand-wheel torque.
To close valve, rotate the hand-wheel clockwise, gate moves downward, minor segment of the gate strikes the body and push both parts of the gate to the seats. To open valve rotate the hand-wheel counter-clockwise until strikes the bonnet to assure full opening.
Technical features:
- rising stem with balance stem;
- reduce handwheel torque;
- body and bonnet connected by bolts;
- body and bonnet sealing metallic gasket
- gate: parallel expanding, with spring;
- stem packing: VTFE glass filled gaskets & soft packing
- loose fitted seat ;
- connection: flange type 6B; according to API 6A, with Ring Joint;
- grease injection through the body and seat to the sealing seat-gate area
- metal to metal sealing
- flow direction stamp on the body according to figure
Description and operation:
The seats are pressed into the body with an O-ring into the back groove, while seal is of metal-to-metal type. Gate and seat replacement is possible, with the valve in line, without the need for special tools.
Upper and lower thrust bearings isolated from well fluid, minimizing torque.
Stem packing can be re-energized with valve under pressure. Stem packing TFE glass and carbon filled and soft packing.
The valve, body may be grease filled through suitable fittings provided on body (upper & lower). Sealing area may be greased through the suitable fittings provided on body (lateral).
Balance stem assure a significant reducing of the hand-wheel torque.
To close valve, rotate the hand-wheel clockwise, gate moves downward, minor segment of the gate strikes the body and push both parts of the gate to the seats. To open valve rotate the hand-wheel counter-clockwise until strikes the bonnet to assure full opening.
Technical features:
- rising stem with balance stem;
- reduce handwheel torque;
- body and bonnet connected by bolts;
- body and bonnet sealing metallic gasket
- gate: parallel expanding, with spring;
- stem packing: VTFE glass filled gaskets & soft packing
- loose fitted seat ;
- connection: flange type 6B; according to API 6A, with Ring Joint;
- grease injection through the body and seat to the sealing seat-gate area
- metal to metal sealing
- flow direction stamp on the body according to figure
Design, manufacturing | API Spec 6A |
Size | 1 13/16'', 7 1/16'' |
Working Pressure | 10,000; 15,000 PSI |
Temperature Range | -60°C - +121°C |
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Valves conf API-6A - Balanced Stem Expanding Gate Valves 912
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