Alco DBB “B”系列阀门（Double Block & Bleed (Ball, Needle, Ball) 6,000 PSI）
-- Bi-directional floating ball design to ensure leak-proof shut-off on pressure or vacuum
-- 90° smooth action, low torque operation
-- Vent valve metal to metal body bonnet seal for high pressure and high temperature sealing
-- Anti-blowout internally loaded stem for extra safety
-- Flexible 3 piece design for easy maintenance
-- Temperature range -40°C to 150°C
-- Firesafe design
-- Repair/service kits available to extend service life further
-- Available in 316/316L
-- Handle indicates OPEN/CLOSED position at a glance
-- Materials of construction supplied to meet the requirements of NACE MR 0175
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