Design code
Design Criteria：BS 6364, API 6D, ASME B16.34
Structure length：ASME B16. 10, API 609
Connection：ASME B16. 5
Test and inspection：API 598 ,API 6D,BS 6364,API 607, API 6FA, ISO 10497,ISO 15848, API 624
Pressure-Temperature：ASME B16. 34
Ultra-low temperature butterfly valve with extension bonnet structure, its purpose is to reduce the heat in the outside incoming device, prevent low temperature medium gasification, ensure the packing function parts above 0 C, make the packing can work normally, prevent the packing function frost or icing, lest the valve rod up and down to pull the packing, the design of the long neck valve cover is mainly the design of neck length, the neck length refers to the distance at the bottom of the packing letter to the surface of the sealing seat. Commonly used low-temperature materials are LCB, CF8, butterfly plate material is 1Cr18N9Ti.
-Meet the cryogenic international standards and user use requirements
-Use the right-angle anti-friction sealing technique
-Low emission levels consistent with ISO15848 & API 622
-Full compliant with API 6D burst stem design
-Valve design is optimized to reach the maximum flow rate
-Elastic metal-to-metal sealing technique
-Scale series: 3 "~ 60"
-Pressure grade: Class150~Class900
-Top-mounted design for easy online repair
-Double-way torque valve seat design
-Fire test complies with API 607 requirements
-Torque seal to achieve zero leakage
-Elastic valve seats in accordance with the API 598 and API 6D
-The seat is a carbide