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Senju Residential Fire Sprinkler 4.9K Concealed Pendent 205F | SS8464 - Lead-Free!

Senju RC-RES Residential Fast Response Concealed Pendent Fire Sprinkler activates at 205F (96C) to defend intermediate hazard residential occupancies against fire. This UL-listed fire sprinkler features a 4.9K orifice and a 1/2" (12.7 mm) NPT connection.
  • Buy 50 for $37.15 each and save 7%
  • Buy 100 for $35.16 each and save 12%
  • Buy 500 for $33.16 each and save 17%
Part NumberConstructionConnectionOrifice
SS8464CP205 Copper Frame And Phosphor Bronze Deflector 1/2" (12.7 mm) NPT 4.9K
Temperature RatingSprinkler WrenchCover Plate Activation TemperatureCover Plate Finish
175F (79C) Wrench - Senju Socket Head for Pendent Fire Sprinklers 140F (60C) Choice of White, Nickel Mirror, Nickel Hairline (Brushed), Ivory, Beige, Black
Maximum Working PressureAvailabilityApprovals and Listings
175 PSI (12.1 BAR) Standard orders usually ship within 48 hours cULus, NSF (NSF-61-G)


Product Description

Senju RC-RES Residential Fast Response Concealed Pendent Fire Sprinkler delivers fire protection without aesthetic compromise in intermediate hazard residential occupancies such as homes, apartments, dormitories, and hotels. Using a heat-activated compressed fusible solder, this automatic fire sprinkler opens when ambient temperatures reach 205F (96C), reducing the likelihood of flashover and facilitating safe evacuation.

Low-profile cover plates mount flush to the ceiling and are available with a painted wood finish, metallic finish, or simple colors. Custom-colored cover plates are available by special order when ordering in quantities larger than 100 units (a $325 paint set-up fee applies). When temperatures near the ceiling reach 140F (60C), the soldered cover plate detaches, exposing the head of the Senju RC-RES concealed pendent fire sprinkler, which activates when temperatures reach 205F (96C).

The Senju Model RC-RES has a 4.9 K-Factor and installs with 1/2" (12.7 mm) National Pipe Thread (NPT), used in fire sprinkler systems throughout the United States. This Residential Fast Response Fire Sprinkler features a lead-free design in compliance with the Reduction of Lead in Drinking Water Act, including a copper frame, a phosphor bronze deflector, and a copper or steel cover plate.

To order the Senju RC-RES with custom cover plates, contact us at 888.361.6662 or fill our our contact form.


With a maximum working pressure of 175 PSI (12.1 BAR), this pendent sprinkler hangs from above-ceiling piping behind a decorative cover plate and may be installed and used in accordance with NFPA 13, NFPA 13R, NFPA 13D and local fire code. Each Model RC-RES sprinkler is made by Senju, Japan's largest manufacturer of fire-suppression products.

This product is UL-listed, and appropriate for use in fire protection systems when accepted by the authority having jurisdiction.


Technical Documents

Click here to view the data sheet for the Senju RC-RES Residential Fast Response Concealed Pendent Fire Sprinkler.

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