Alarm check valve in Tamil | sprinkler system in Tamil | fire alarm check valve | operation

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Alarm check valve working principle.?
Alarm check valve operation.?
how to work alarm check valve.?
fire fighting system

[@selvinaidu3205]

Useful information

[@knowyoursafety2040]

Thanks for your valuable feedback

[@murumurugan4068]

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[@keerthinagapandi5974]

Bro this is called commonly zone contril valve right,

[@knowyoursafety2040]

Sprinkler system nu solluvanga, ithukku apparam tha zone control valve