Purple Valves
PRPLZ263

Forged Steel Cryogenic Globe Valve

A forged steel cryogenic globe valve with an extended bonnet for throttling and isolation of liquefied gases at very low temperatures.

Size1/2" to 24"PressureANSI Class 150 to 1500BodyGlobe (straight pattern)
Overview

The forged steel cryogenic globe valve is engineered for precise throttling and tight isolation of liquefied gases such as LNG, oxygen, nitrogen and argon. A disc seating onto a horizontal seat gives the fine flow control characteristic of globe valves, while an extended gas-column bonnet keeps the gland packing clear of the cryogenic medium and prevents ice formation around the stem seal. Low-temperature forged steel and austenitic stainless trim retain toughness down to deep cryogenic temperatures. The valve trades a higher pressure drop than a gate valve for the superior regulation and bubble-tight shut-off that cold service demands.

Technical Detail

Specifications

Size Range
1/2" to 24"
Pressure Rating
ANSI Class 150 to 1500
Temperature Range
-196°C to 232°C (-320°F to 450°F)
End Connections
Raised Face, RTJ, Socket Weld, Threaded
Body Material
Forged low-temperature steel (LF2 / LCC)
Ball / Disc / Wedge Material
Stainless steel / Stellite faced
Seat Material
Stainless steel / Stellite
Stem Material
Stainless steel
Body Style
Globe (straight pattern)
Operation
Handwheel, Gear, Electric, Pneumatic
Applications
LNG, liquid oxygen, nitrogen and argon, air separation and cryogenic processing
Design Standard
BS 1873 / API 623 / ASME B16.34
Testing Standard
API 598
Face to Face Standard
ASME B16.10
At a Glance

Key Features

  • Disc-on-seat design for precise throttling and flow regulation
  • Tight, bubble-class shut-off
  • Hardfaced (Stellite) trim for long seat life
  • Rising stem with clear position indication
  • Back-seat protects the gland for in-service repacking
  • Wide choice of body, trim and end-connection materials

Options

  • Gear or actuator operation (electric / pneumatic)
  • NACE compliant trim
  • Extended bonnet for hot or cold service
  • Lockable handwheel
  • Special alloy materials

Standards & Certifications

  • API 598 tested
  • NACE MR0175 compliant (optional)
  • CE / PED on request
  • ISO 9001 quality system
Contact

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