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.

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.


Construction

Two or Three piece bolted body

Port

Reduced bore, full bore or fully piggable

Stem retention

Anti blow-out stem

Leakage rate

ISO 5208 rate A soft seated, rate D metal seated

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.

Pressure relief

Automatic cavity relief to prevent over pressure in body cavity (self-relieving seats)

Sealing

Bi-directional, Double block & bleed (DBB) with sealing in both directions (DIB-1&2 upon request)
Metal seated with Tungsten or Chrome Carbide coatings
Primary metal secondary soft (PMSS) with differential hardness between the ball and seat to prevent galling of the substrate
Soft seated with thermoplastic polymers (Nylon, PEEK, PCTFE), special polymers upon request, Elastomers FKM, HNBR, EPDM O-Rings, special elastomers upon request

Drain

Drilled and threaded connections for all sizes

Vent

Drilled and threaded vent connections for sizes ≥ DN150 (6") < DN150 upon request

Stem grease injectors

Included for all sizes

Seat grease injectors

Included for sizes ≥ DN150 (6"), < DN150 upon request

Lifting points

Included for sizes ≥ DN150 (6") or on valves of 250 kg min

Support feet

Included for sizes ≥ DN150 (6") or on valves of 250 kg min

Stem extension

Not foreseen for this model

Valve operation

Lever, Gear box or Actuator with position indicator and locking device

Material testing

Pressure containing & controlling parts to EN 10204 3.1
Materials in Sour Service according to NACE MR0175, MR0103, ISO 15156
Non-destructive testing (NDT) to API 6D, ASME B16.34

Valve testing

Hydrostatic & pneumatic testing to API 6D, ASME B16.34, ISO 5208 (other upon request)





TECHNICAL DATA

Design

API 6D, API 6DSS, API 6A, ASME B16.34, ISO 14313, ISO 10423, ISO 17292

Design pressure

ASME B16.34, EN 1092-1, ISO 17292

Body wall thickness

ASME B16.34, ASME VIII Div. I, ISO 17292

Face to Face

API 6D, ASME B16.10 Long pattern

Temperature range

-50° to 200°C (-58° to 392°F)

Pressures range

PN20 (ANSI 150) to PN420 (ANSI 2500)

Size range

DN15 (1/2") to DN1400 (56")

End connections

ASME B16.5 ≤ DN600 (24") Flanged RF,FF,RTJ
MSS-SP-44 = DN550 (22") Flanged RF,FF,RTJ
ASME B16.47 A ≥ DN650 (26") Flanged RF,FF,RTJ
ASME B16.25 Butt-Weld BW


APPROVALS

Safety Integrity Level

SIL 3

Fire Safe

API 607, API 6FA, BS 6755, ISO 10497-5

Area Classification

ATEX 94/9/EC

Pressure Equipment Directive

PED 97/23/EC

Fugitive Emission

ISO 15848/1

Construction

API 6D, API 608

Welcome to our website. If you have any requests or suggestions,please feel free to email us at teji@teji-valve.com or use the following enquiry form. Please allow us to provide you with the best service.

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TEJI

Welcome to our website. If you have any requests or suggestions,please feel free to email us at teji@teji-valve.com or use the following enquiry form. Please allow us to provide you with the best service.