Trunnion Ball Valves Fully Welded Body

Trunnion Ball Valves Fully Welded. Body Design: API 6D, API 6DSS, ASME B16.34, ISO 14313, 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.

Trunnion Ball Valves Fully Welded Body
Trunnion Ball Valves Fully Welded Body

Model no. VW3 – VW4 – VW5

Valves suitable for Oil & Gas production, processing, transportation, distribution, chemical and petrochemical refining on above ground and below ground installations.

Trunnion Ball Valves Fully Welded Body

 

GENERAL CONSTRUCTION
 

Trunnion ball valves have the obturator bounded by trunnions which do not allow 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 sizes and pressures. Fully welded constructions, both flanged or with welded ends, are preferable solution when no maintenance is required on above ground or below ground (buried) installations and allows a real 0 leakage feature.

 

MATERIALS OF CONSTRUCTION
  • Low Temperature and Low Alloy Carbon Steel
  • Stainless steel, Duplex and Super Duplex
  • Nickel alloys

 

APPLICATIONS
 

STANDARD FEATURES
 
Construction Fully welded 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 overpressure 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
Pups pieces
Available upon request
Available upon request
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
Welding & NDT according to ASME IX; WPS, PQR, WPQ as per project requirements
Valve testing Hydrostatic & pneumatic testing to API 6D, ASME B16.34, ISO 5208 (other upon request)

TECHNICAL DATA
 
Design API 6D, API 6DSS, ASME B16.34, ISO 14313, 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 6DSS