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 standard | ASME B16.34, ISO 17292, API 608, API 6D |
| Cryogenic design | BS 6364, EN 1626, EN 28921-1 (optional) |
| Testing standard | BS 6364, API 598, EN 12266-1 |
| Fugitive emission | TA-Luft, ISO 15848-1, API 641 |
| Cleaning standard | CGA 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 standard | ASME B16.5 |
| Weld ends | ASME B16.25 |
| Fire safe testing | API 607, API 6FA, ISO 10497 |
| Documentation | EN 10204 type 2.2 (default) / 3.1 / 3.2 |
