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APC Delaying Valve DIN477 + Manual Control. High strength forged brass body withstands working pressure up to 140n bar for long term pressure service. Built in delay mechanism provides evacuation time for personnel before CO2 agent discharge to improve site safety. Equipped with safety chain protection to avoid accidental triggering, ideal for marine and industrial fixed fire suppression systems. Dual actuation design with pneumatic delaying function plus manual emergency pull rod control for reliable on site operation. Compliant with DIN477 standard interface, perfectly compatible with mainstream CO2 fire fighting gas cylinders.