RD055 SSU Upright Quick Response Sprinkler
K factor | 115 (8.0) |
---|---|
Standard Orifice Size | 15mm |
Standard Thread Size | ½” NPT |
Response | Quick Response |
Bulb | 3mm |
Maximum Working Pressure | 12.1 bar (175 psi) |
Finish | Brass, chrome and white paint finish. Special RAL E2colours available on request |
Approvals | FM, UL, LPCB, VdS, CE, UKCA, Gost |
The Rapidrop model RD055 SSU are Quick Response frangible glass bulb automatic sprinklers. They are CE Marked, LPCB, VdS, FM approved, UL listed, standard orifice fire sprinklers for installation in fire sprinkler systems. Sprinklers produce a hemispherical water distribution pattern below the deflector. In a fire condition the heat causes the fluid in the glass bulb to expand which shatters the glass and releases the spring seal assembly. Water flows from the orifice onto the sprinkler deflector which diffuses the water into a uniform spray pattern which extinguishes or controls the fire.
Specifications
K factor | K115 (K8.0) |
Standard Orifice Size | 15mm (½”) |
Thread Size | ½” NPT, R½ (½” BSPT) available on special order |
Max. Working Pressure | 12 bar (175 psi) |
Min. Operating Pressure | 0.5 bar (7psi) |
Factory Pressure Test | 34 bar (500 psi) |
Weight | 79 g (2.8 oz) |
Fitted with Bulb Protector | Remove after installing sprinkler |
Operating Temperatures
Nominal Operating Temperature | Bulb Colour |
57ºC (135ºF) | Orange |
68ºC (155ºF) | Red |
79ºC (175ºF) | Yellow |
93ºC (200ºF) | Green |
141ºC (286ºF) | Blue |
RD055 Design Coverage
Spray Upright Sprinkler for installing only in upright position giving hemispherical discharge below the deflector with little or no water being discharged upwards. For sprinkler coverage area and placement refer to NFPA 13 standards or other installation rules for automatic sprinkler systems as required by the authority having jurisdiction. The following details are provided for information only.
Rapidrop K115 (K8.0) Sprinkler Flow Characteristics
- Data Sheet 4.52 D [EN]
- Data Sheet 4.52 B [PL]
- Data Sheet 4.52 A [SR]
- RD055 Sprinklers - FM Certificate
- RD055 Sprinklers - UL Certificate
- RD055 Sprinklers - ULc Certificate
- RD055 Sprinklers - VdS Certificate
- RD055 Sprinklers - Gost certificate
- RD055 Sprinklers - CE Certificate
- RD041-45 / RD052-55 - UKCA Certificate