Category
Product Detail
Forged Steel Trunnion Ball Valve
Trunnion ball valves have the obturator bounded by trunnion which prevents axial displacements of the ball itself in the flow direction.
- category :Ball Valve
- Email :teji@teji-valve.com
- Phone :+86-577-67354000
- fax :+86-577-67354001
GENERAL CONSTRUCTION
Trunnion ball valves have the obturator bounded by trunnion which prevents axial displacements of the ball itself in the flow direction; line pressure compresses the seat onto the ball, the contact between surfaces generates the valve sealing; trunnion standard construction ensure automatic cavity relief in case of overpressure in body cavity; these valves can be selected for a wide range of applications with no specific limits to all sizes and pressures.
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Construction |
Two or Three piece bolted body |
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Port |
Reduced bore, full bore or fully piggable |
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Stem retention |
Anti blow-out stem |
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Leakage rate |
ISO 5208 rate A soft seated, rate D metal seated |
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Antistatic device |
Included, the ball valve design includes an electric conductive connection between the internal parts of the ball valve and the body, providing the anti-static function. |
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Pressure relief |
Automatic cavity relief to prevent over pressure in body cavity (self-relieving seats) |
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Sealing |
Bi-directional, Double block & bleed (DBB) with sealing in both directions (DIB-1&2 upon request) |
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Drain |
Drilled and threaded connections for all sizes |
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Vent |
Drilled and threaded vent connections for sizes ≥ DN150 (6") < DN150 upon request |
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Stem grease injectors |
Included for all sizes |
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Seat grease injectors |
Included for sizes ≥ DN150 (6"), < DN150 upon request |
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Lifting points |
Included for sizes ≥ DN150 (6") or on valves of 250 kg min |
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Support feet |
Included for sizes ≥ DN150 (6") or on valves of 250 kg min |
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Stem extension |
Not foreseen for this model |
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Valve operation |
Lever, Gear box or Actuator with position indicator and locking device |
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Material testing |
Pressure containing & controlling parts to EN 10204 3.1 |
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Valve testing |
Hydrostatic & pneumatic testing to API 6D, ASME B16.34, ISO 5208 (other upon request) |
TECHNICAL DATA
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Design |
API 6D, API 6DSS, API 6A, ASME B16.34, ISO 14313, ISO 10423, ISO 17292 |
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Design pressure |
ASME B16.34, EN 1092-1, ISO 17292 |
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Body wall thickness |
ASME B16.34, ASME VIII Div. I, ISO 17292 |
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Face to Face |
API 6D, ASME B16.10 Long pattern |
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Temperature range |
-50° to 200°C (-58° to 392°F) |
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Pressures range |
PN20 (ANSI 150) to PN420 (ANSI 2500) |
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Size range |
DN15 (1/2") to DN1400 (56") |
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End connections |
ASME B16.5 ≤ DN600 (24") Flanged RF,FF,RTJ |
APPROVALS
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Safety Integrity Level |
SIL 3 |
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Fire Safe |
API 607, API 6FA, BS 6755, ISO 10497-5 |
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Area Classification |
ATEX 94/9/EC |
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Pressure Equipment Directive |
PED 97/23/EC |
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Fugitive Emission |
ISO 15848/1 |
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Construction |
API 6D, API 608 |
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