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.
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).