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Cryogenic High Pressure Floating Ball 3 Piece
C28
- Size Range
- 1/4” – 8” (DN8-DN200)
- Pressure Range
- Class #2500, 414 bar, 6000 psi
High Pressure Cryogenic Class 2500, full differential pressure for sizes up to and including 2″ (DN50), differential pressure of up to 103 bar (1494 psi) for sizes 2½” (DN65) and above with hybrid seats.
Pressure containing parts are in compliance with ASME B16.34, for wall thickness, design type-tested for burst testing of four times the pressure rating for 5 minutes. A one-size-up stem made of high tensile material complies with ASME B16.34 and API 6D for drive train requirements provides a sufficient safety factor during operation. A special hybrid seat design is comprised of a metal housing and polymer insert machined as a single unit provides bubble tight shut-off (Rate A), combined with lower operating torque.
- Solid one-piece high torque durable stem.
- Tight stem-to-ball directional engagement, ensures relief hole alignment.
- Strict materials and manufacturing tolerances control.
Special mechanical design and construction
- A narrow space between the extension ID and the stem OD allows the
stem seal to remain at an ambient temperature.
- A narrow space between the extension ID and the stem OD allows the
Efficient heat transfer
- 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.
No-Trap Cavity
- 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).
Flexible bonnet installation angle
- 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
Flow direction indicators (for valves with preferred flow direction)
Downloads
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