Top Entry Ball Valves

STANDARD MODEL

VALVE DESCRIPTION

Subsea top entry ball valves are designed according to API6DSS, API6A, API17D with the addition of customer requirements when present. The valves do not rely on lubricant or grease to assist sealing between the ball and seat. Metal-to-metal sealing is used between the ball and seat and non-elastomeric seal are provided between the seat and body. Metal-to-metal sealing is also provided between body-to-bonnet and stem-to-body (optional).The Subsea ball valves are actuated by Perar hydraulic actuator or gearbox as requested.

BASIC CHARACTERISTICS

  • API6DSS, API6A, API17D design as requested
  • Bi-directional sealing
  • Spring loaded metal-to-metal seats (tungsten carbide coating 0,2 mm – 0,4 mm thickness)
  • Anti-blow out design stem
  • Non-elastomeric seals to avoid the risk of gradual degradation of the seals over their life
  • Full metal-to-metal sealing at body-bonnet and valve stem
  • Forged material to comply with API6A PSL3
  • Valve actuation with dedicated hydraulic actuator and ROV operable Gearbox (fixed or retrievable)

topentry

Model:   Forged Body (PSL3-PSL4)

Pressure Classes:  3000 psi /900-1500 lbs

Size: 1/2” to 36”

Pressure Classes:  5000 psi / 2500 lbs

Size: 1/2” to 30”

Pressure Classes: 7500 psi

Size: 1/2” to 22”

Pressure Classes: 10000 psi

Size: 1/2” to 9”

Pressure Classes: 15000 psi

Size: 1/2” to 9”

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Model:   Cast Body (PSL2)

Pressure Classes:  3000 psi /900-1500 lbs

Size:  4” to 48”

Pressure Classes:  5000 psi / 2500 lbs

Size: 4” to 30”

Pressure Classes: 7500 psi

Size: 4” to 22”

Pressure Classes: 10000 psi

Size: 4” to 9”

 

 

 

Primary Metal Seat Standard

Seal Welded Vent Standard

Self relieving Seats Standard

Electrical Continuity Standard

Double Piston Seat On Request

Seal Areas Overlay Standard

Double Block and Bleed On Request

Wetted Areas Overlay On Request

Anti blow-out stem Standard

Primary Metal Seals (BX) Standard

Diver, ROV or Actuated As Requested

Primary Metal Stem Seal On Request

Hybrid valve (Metal SR/Soft DPE) On Request

API6A/API17D qualification As Requested

 BODY, BONNET, PUPS

– ASTM A350-LF2 + Inconel 625 overlay

– ASTM A694-F52/F56/F60/F65 + Inconel 625 overlay

– ASTM A182-F22 + Inconel 625 overlay

– Duplex 22% Cr

– Superduplex 25% Cr

– Inconel 625

 TRIM (SEAT, BALL AND STEM)

– ASTM A350-LF2 + Inconel 625 overlay

– ASTM A694-F52/F56/F60/F65 + Inconel 625 overlay

– Duplex 22% Cr

– Superduplex 25% Cr

– Inconel 625

– Inconel 718

 BODY SEALS / SEAT SEALS

– METAL GASKET (BX type gasket)

– LIPSEAL– PTFE + ELGILOY

– CHEVRON PACK – PTFE + PEEK + ELGILOY

– OR – HNBR AED (for seawater sealing)

 SEAT INSERT

– METAL WITH TUNGSTEN CARBIDE COATING (MIN. TH. 0.2 mm)

– METAL WITH TUNGSTEN CARBIDE COATING (MIN. TH. 0.4 mm)

– PEEK / PCTFE / KEL-F / NYLON (DEVLON V-API)

 BOLTING

– ASTM A320-L7 / A193-B7 (XYLAN COATED, ZINC ELECTROGALVANIZED)

– ASTM A320-L7M / A193-B7M (XYLAN COATED, ZINC ELECTROGALVANIZED)

– ASTM A453-GR.660 (XYLAN COATED)

– ZERON100 (25% Cr)