Cryogenic Ball Valves NZ | PEKOS Valves | HD Process

Cryogenic Ball Valves for Low-Temperature Isolation

HD Process supplies cryogenic ball valves for reliable isolation and flow control in liquefied-gas and deep-cold process systems. The range includes manual and actuated configurations with low-temperature-compatible seats, seals and extended-stem arrangements.

Valve configuration must be matched to the operating temperature, pressure class, media, line size, connection standard, insulation arrangement and required leakage performance.

PEKOS ZFOSU 36 KTTGN Cryogenic Valve Construction

The linked PEKOS ZFOSU 36 KTTGN data sheet covers a Class 300 cryogenic ball valve with a floating-ball, split-body and full-bore design. Its extended stem positions the packing and operating mechanism away from the cold zone.

• Soft-seated, unidirectional valve configuration.
• Spring-loaded seat system and self-cavity pressure relief.
• Anti-blowout stem and automatically adjustable packing.
• Anti-static device and degreased construction.

Class 300 Sizes, Materials and Valve Standards

The referenced PEKOS configuration covers nominal sizes from ½ in to 4 in and a temperature range extending to -196 °C. The body and ball are manufactured from ASTM A351 CF8M stainless steel, with a PCTFE seat and stem seal and an XM-19 stem.

• Class 300 flanges to ANSI B16.5.
• Face-to-face dimensions to ANSI B16.10.
• Design standards include API 6D and ASME B16.34.
• Testing standards include API 598, API 6D and BS 6755-1.
• ISO 5211 top flange for actuator mounting.

Manual, Actuated and Extended-Stem Options

• Manual lever-operated valves.
• Pneumatic or electric actuation.
• Limit switches, positioners and actuator mounting hardware.
• Extended-stem or extended-bonnet arrangements for cold-zone management.
• Flanged, butt-weld and socket-weld connection options across the wider range.

Cryogenic Media and Plant Duties

Cryogenic ball valves can be configured for LNG, liquid nitrogen, liquid oxygen and other compatible liquefied gases. Typical duties include storage-vessel isolation, transfer lines, loading systems, gas-processing plants, laboratory rigs and emergency isolation points.

Contact HD Process with the media, minimum temperature, operating pressure, line size and connection standard to confirm the correct cryogenic valve configuration.