MODEL: SD8220
The Model SD8220, ¾” orifice, Extended Coverage Horizontal sidewall sprinkler is designed for extended coverage or recessed installation. The design provides a crescent-shaped water discharge pattern for installation along a wall or under a beam or ceiling. The design incorporates state-of-the-art, heat responsive, frangible glass bulb design (quick response) for prompt, precise operation. The die cast frame is more
streamlined and attractive than traditional sand cast frames.
It is cast with a hex-shaped wrench boss to allow easy tightening from many angles, reducing assembly effort. This sprinkler is available in various temperature ratings (see chart on page 2) and finishes to meet many design requirements. The recessed pendent should be utilized with a recessed escutcheon which provides up ¾” of adjustments.
Operation
The operating mechanism is a frangible glass bulb which contains a heat responsive liquid. During a fire, the ambient temperature rises causing the liquid in the bulb to expand.
When the ambient temperature reaches the rated temperature of the sprinkler, the bulb shatters. As a result, the waterway is cleared of all sealing parts and water is discharged towards the deflector. The deflector is designed to distribute the water in a pattern that is most effective in controlling the fire.
Maximum Coverage
Standard spray coverage is up to: Light Hazard = 384sq.ft.
(35.8m2); Ordinary Hazard = 256sq.ft. (24m2) per NFPA 13.
Specifications
| Sprinkler Identification Number |
Quick Response, Extended Coverage SD8220 (bulb 3mm) |
|
|---|---|---|
| Style | Horizontal Sidewall | |
| K Factor | 8.0 Imp. (114S.I) | |
| Response Time Index (RTI) | < 33 (m/s1/2) Quick Response | |
| Nominal Thread Size | ¾” NPT (20 mm) | |
| Max. Working Pressure | 175 PSI (1200 kPa) | |
| Factory Hydrostatic Test | 100 % @500 PSI(3450 kPa) | |
| Min. Operation Pressure | 7 PSI (48 kPa) | |
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