STANDARD MODEL
VALVE DESCRIPTION
The ball of trunnion mounted configuration is supported by bearing plates hold by the end adaptors. In such a way the pressure loads are transferred to the valve body granting a smooth rotation of the ball with low torque levels and reduced seat seal wear.
On PERAR Trunnion Mounted Welded Body Ball Valves the potential leak paths are minimized making them suitable for buried installations and in general for gas transportation.
The weight and overall dimensions are optimized by applying a shaped design.
They are manufactured in a wide range of sizes and pressure classes from forgings.
BASIC CHARACTERISTICS
- API 6D, API 6A design
- Full Bore and Reduced Bore design
- Flanged or Welding Ends
- Spring loaded floating seats
- Bi‐directional sealing
- Anti blow‐out stem
- Anti static device
- Heavy duty bearings
- Double Block & Bleed design
- Fire safe design
Model: WB
Size: 1/2” to 68”
Pressure Classes: ASME 150# to 2500#
Temperature Range: ‐196°C to 400°C
Soft Seating Standard
Metal Seating On Request
Self‐relieving Seats Standard
Double Piston Effect Seats On Request
Vent & Drain ports Standard
Emergency sealant injection On Request for 6” FB and above
Wetted Areas Overlay On Request
Manual operated or Actuated Standard
Stem Extension On Request
Extended Bonnet On Request
Welded Pups On Request
Sealing Areas Overlay On Request
BODY, CLOSURE
– CS (ASTM A105), LTCS (ASTM A350 LF2)
– High strength LTCS (A694 F52, F60, F65)
– Austenitic SS (ASTM A182 F304, F316)
– Duplex SS 22% Cr (ASTM A182 F51)
– Superduplex SS 25% Cr (ASTM A182 F53/F55)
– 6Mo SS (ASTM A182 F44)
– Inconel 625
– Incoloy 825
– Monel
BODY SEALS / SEAT SEALS
– Viton A FKM O‐ring
– Viton GLT FKM O‐ring
– Viton AED FKM O‐ring
– HNBR AED O‐ring
– FFKM O‐ring
TRIM (SEAT, BALL and STEM)
– CS (ASTM A105), LTCS (ASTM A350 LF2) + ENP 0.003”
– High strength LTCS (A694‐F52, F60, F65) + ENP 0.003”
– AISI 410 Martensitic SS (ASTM A182 F6a)
– 17‐4 PH
– Austenitic SS (ASTM A182 F304, F316)
– Duplex SS 22% Cr (ASTM A182 F51)
– Superduplex SS 25% Cr (ASTM A 182 F53/F55)
– 6Mo SS (ASTM A182 F44)
– Inconel 625
– Inconel 718
– Incoloy 825
– Monel
SEAT INSERT
– Viton A/GLT/AED FKM O‐ring
– HNBR
– PTFE / RPTFE
– Nylon / DEVLON V
– PCTFE / KEL‐F
– PEEK
– METAL with either TUNGSTEN CARBIDE or
– CHROMIUM CARBIDE COATING (0.15 mm min. thk