Fire Sprinkler Head, TYCO Model RFII Pendent Concealed, TY3531 and TY3551 High Pressure, 5.6K, 1/2", Pendent - Available In Multiple Configurations Configurations:TY3531 - 155 Degree - 51-792-1-155 NPT stands for National Pipe

NPT stands for National Pipe Thread

Each set includes (1) 402 Cup

The TYCO Model ESFR-1 Pendent Sprinklers are Early Suppression

They may also be installed in spaces subject to freezing and supplied from a wet system in an adjacent heated area

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Fire Sprinkler Head, TYCO Model RFII Pendent Concealed, TY3531 and TY3551 High Pressure, 5.6K, 1/2", Pendent - Available In Multiple Configurations Configurations:TY3531 - 155 Degree - 51-792-1-155 NPT stands for National PipeFire Sprinkler Head, TYCO Model RFII Pendent Concealed, TY3531 and TY3551 High Pressure, 5. 6K, 1 2", Pendent Available In Multiple Configurations The TYCO Series RFII 5. 6 K factor, Royal Flush II Concealed Pendent Sprinklers Quick Response (3 mm bulb) and Standard Response (5 mm bulb), are decorative sprinklers featuring a flat cover plate designed to conceal the sprinkler. These sprinklers are optimal for architecturally sensitive areas such as