Leeds Valve Co. Ltd has recently manufactured fifty cryogenic butterfly valves for British Gas. These are for use on storage tanks in the UK, at a duty of -165°C, 6bar-g. The size range on this particular project is 100mm to 600mm using wafer, lugged and flanged patterns. The materials of construction are stainless steel ASTM A351 CF8M. All valves are fitted complete with stainless steel cryogenic extensions – a particular feature on valves used on such low temperatures. The majority are fitted with gearboxes, the remainder are automated, with electric actuators.