... Ball Valve manufactured by huachao valves has good quality. We have manufactured and distributed more than 30000 of these units worldwide, ... Double Block and Bleed’s.Hot tags: Double Block Bleed Valve, China, mill, manufacturer, supplier, factory, wholesale, cheap Instrument ... : 200℃ (240℃ available as an option)Valve Type: Metal to Metal seated needle valve or soft seated ball valveSpindle: Anti-blow ...