Trunnion Ball Valves Side Entry Modular Body DBB

Trunnion Ball Valves Side Entry Modular Body DBB. 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

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. Erreesse modular double block & bleed (DBB) valves are engineered and manufactured to provide a compact and reliable alternative to multiple instrument valve systems, reducing leak paths and saving installations and maintenance costs.

Model no. VD3 – VD4

Valves suitable for Oil & Gas production, processing, transportation, distribution, chemical and petrochemical refining including system isolation, pressure level and flow measurement, instrument drain, chemical injection and sampling for smaller sizes.

Trunnion Ball Valves Side Entry Modular Body (DBB)

 

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. Erreesse modular double block & bleed (DBB) valves are engineered and manufactured to provide a compact and reliable alternative to multiple instrument valve systems, reducing leak paths and saving installations and maintenance costs.

 

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

 

APPLICATIONS
 
Utility
Corrosive & Dirty
Low Temperature
High Pressure

STANDARD FEATURES
 
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 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 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 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 DN1800 (72")
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,
ASME B16.25 Butt-Weld BW
Clump (HUB)

 

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