What are the 2 types of sprinkler heads?

What are the 2 types of sprinkler heads?
What sprinkler means?
What is the function of sprinkler?
What is sprinkler in safety?
What is sprinkler and types?
What are the advantages of sprinkler system?
What are the 2 different types of sprinklers systems used?
What liquid is used in sprinkler?
What is sprinkler temperature?
What is sprinkler temperature?
#sprinkler #fire #safety #hydrant #riser #training #nafseup #installation

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