Cryogenic Trunnion Mounted Ball 3 Piece

C91


Size Range
2”-12” (DN50-DN300)
Pressure Range
Class #150, 20 bar, 290 psi

Design features

• 3-piece robust, forged valve
• Double block & bleed
• Blowout-proof robust stem design
• Bi-directional as standard
• API 6D certified (API monogram #6D-1278)
• Fire safe designed to API 6FA, API 607, ISO 10497
• Comply with NACE MR0175/ISO 15156
• Corrosion resistant low friction bearings
• Double Piston Effect or Single Piston Effect seat design
• Mixed SPE and DPE seats design also available
• Integral top-works direct mounting pad to ISO 5211
• 6” and larger valves are equipped with lifting lugs
• 8” and larger valves can be equipped with vent and drain valves (Optional)
• Antistatic grounding between ball, stem & body

Read more
Cryogenic Valve FC91

Special mechanical design and construction

  • Solid one-piece high torque durable stem.
  • Tight stem-to-ball directional engagement, ensures relief hole alignment.
  • Strict materials and manufacturing tolerances control.

Efficient heat transfer

  • A narrow space between the extension ID and the stem OD allows the
    stem seal to remain at an ambient temperature.

No-Trap Cavity

  • Relief hole on the upstream sphere of the ball to prevent pressure buildup in the cavity.
  • Single-side or self-pressure-relief sealing for bidirectional full pressure service.

Flexible bonnet installation angle

  • Up to 45° from the vertical axis for the 12” bonnet (per BS6364 guidelines).
  • Up to 15° from the vertical axis for the 6” bonnet (not BS6364 compliant).

Flow direction indicators (for valves with preferred flow direction)

  • Highly visible arrows on body and bonnet top.
  • “T” mark on the stem, showing relief hole direction.

Double isolation / double block and bleed designs available upon request
Clean assembly and packing

Downloads

C91 Series- technical drawing
EN
Product Line Brochure
EN
ES
CN
DE
Cryogenic Catalogue
EN
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