Ball valve

Cryogenic top-entry trunnion ball valve



Valve design

based on BS 6364, MESC 77/200, ISO 28921 (on request) and customer requirements

Temperature range
-320 to 212°F (-196 to 120°C)

NPS 2 -36 (DN 50-900)

Pressure rating

ASME 150 - ASME 900

As per API 6D standard
End connections

RF, RTJ as per B16.5 &B16.47
BW, Butt Welded as per B16.25

Body design

Forged or cast one-piece

Seat design

Soft or metal seated with hard facing on Ball and Seats
Seat design to avoid trapped fluid in body cavity


Secondary seals in pure Graphite
Anti-static device
Anti-blowout stem
Lip seal configuration
Low fugitive emission stem packing available
Special maintenance tool for in-line seat disengagement
Extended bonnet for low and cryogenic service


Manual: wrench or gear with padlocking
Actuated: Pneumatic/ Hydraulic/Electric 

Testing & certifications

Compliance with BS 6364, MESC 77/200, ISO 28921 (on request) inspection and testing
Fire safe and fire tested as per API 6FA/607 
SIL 3 Certification as per IEC61508
Fugitive Emission as per ISO15848
PED 2014/68/UE   
Compliance with BS EN 1626 standard (available on request)
Compliance with BS EN 12567 standard (available on request)

Cryogenic top-entry ball valves are manufactured for extremely low temperature and cryogenic applications where in-line disassembly is required for trim inspection and maintenance.Valves are designed with an integral bonnet extension which prevents cryogenic liquids from reaching the stem packing by enabling the liquids to boil and convert to gas. This minimizes the energy loss along the extension and protects the valve from malfunctioning. The structural integrity of the valve reduces any thermal deformation of internal components caused by temperature variance to a minimum, ensuring the highest level of performance for tight shut-off in critical LNG fields.