Tyco® Type D4a, Protectospray Directional Spray Nozzle, Open, Medium Velocity, 1/2” NPT, 1.8K, No.18 Orifice, Angle 180, Natural Finish Bronze, 49-418-1-180 57-390-1-175 (FDC Not Included)

(FDC Not Included)

The low frequency sounder and low frequency sounder strobes were designed to address the NFPA 72 sleeping space requirements that require a low frequency notification appliance that operates within frequency range of 520 Hz ± 10% and is of a square wave tone

• Compact

75 in W x 5 in D

Tyco® Type D4a, Protectospray Directional Spray Nozzle, Open, Medium Velocity, 1/2” NPT, 1.8K, No.18 Orifice, Angle 180, Natural Finish Bronze, 49-418-1-180 57-390-1-175 (FDC Not Included)The TYCO Type D4a PROTECTOSPRAY Nozzles are open (non automatic) directional spray nozzles and they are designed for use in water spray fixed systems for fire protection applications. They are external deflector type nozzles that discharge a uniformly filled cone of medium velocity water droplets. The Type D4a Nozzles feature a four arm body design that helps assist against mechanical or physical damage similar to a sprinkler guard used on automatic