Rapidrop -K4.2 Residential Flush Pendent Sprinkler. Model RD201 (4.14)

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The Model RD201 Residential Flush Pendent Sprinklers are automatic sprinklers of the compressed fusible solder type. They are decorative, low profile, flush mount sprinklers. The Frame and Cover of the sprinkler hide the Deflector and Valve Cap assemblies.


The Model RD201 is designed for use in residential occupancies such as homes, apartments, dormitories, and hotels. When aesthetics is the major consideration, the Model RD201 should be your first choice.


They are to be used in wet pipe residential sprinkler systems for one- and two-family dwellings and manufactured homes per NFPA 13D; wet pipe residential sprinkler systems for residential occupancies up to and including four stories in height per NFPA 13R; or, wet pipe sprinkler systems for the residential portions of any occupancy per NFPA 13.
The Model RD201 has a 4.2 (60.5 LPM / √ bar) K-factor which provides very low design flow rates at reduced residual pressures, enabling smaller pipe sizes and water supply requirements.


The flush design of the Model RD201 features a separable escutcheon providing 3/8 inch (9.5 ) vertical adjustment. This adjustment reduces the accuracy to which the fixed pipe drops to the sprinklers must be cut to help assure a perfect fit installation.


The Model RD201 has been designed with heat sensitivity and water distribution characteristics proven to help in the control of residential fires to improve the chance for occupants to escape or be evacuated. However, residential fire sprinkler systems are not a substitute for intelligent fire safety awareness or fire safety construction required by building codes.

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