Cryogenic Floating Ball valves

Cryogenic Floating Ball valves

Cryogenic Valves that Serve the Entire LNG Value Chain

The Microfinish cryogenic valve line is available in trunnion mounted valve type up to 24 inch (DN 600) and floating ball type up to 10 inch (DN 250). The various configurations are available in reduced bore and full bore designs, and pressure classes from ASME 150 to 2500 (size dependent). The valve must function properly at temperatures as low as -269°C/-450°F and precise tolerances are set for those parts to be subjected to thermal shock and shrinkage. Furthermore, some cryogens such as LOX and LNG are flammable; so the valve must be designed to be fire safe as specified in API 607, API 6FA, and ISO 10497 standards.Microfinish cleaning procedures for the cryogenic line is in full compliance with the following international standards and corporate specifications: CGA G-4.1, ASTM A380/A380M; EIGA 33.06; Linde standard LS 141-47 part 1 and 2; Linde standard LS 031-6X7; Praxair standard GS-38 and GS-40; and Reliance standard; and spec No.100080-1-SS-PP-004-Part IV App. B and E.

Applicable standards

Design standardASME B16.34, ISO 17292, API 608, API 6D
Cryogenic designBS 6364, EN 1626, EN 28921-1 (optional)
Testing standardBS 6364, API 598, EN 12266-1
Fugitive emissionTA-Luft, ISO 15848-1, API 641
Cleaning standardCGA G-4.1, ASTM A380/A380M, EIGA 33.06, Linde LS 141-47 part 1 and 2, Linde LS 031-6X7, Praxair GS-38, and GS-40.
Flange standardASME B16.5
Weld endsASME B16.25
Fire safe testingAPI 607, API 6FA, ISO 10497
DocumentationEN 10204 type 2.2 (default) / 3.1 / 3.2