OH-SWC nozzle is a patented automatic semi-concealed water mist nozzle, designed to be installed into fixed low pressure systems. OH-SWC is ideal for fire protection of cabins and other similar locations with smooth walls and ceilings. The nozzle provides reliable fire prevention combined with low water consumption. OH-SWC nozzles are recessed into walls so that the decorative ring is on the surface level and the nozzle cover plate is 10-15 mm above the surface being in daily use the only visible part of the sprinkler. Merging of the sprinkler into surroundings can be improved customizing the decorative ring and cover plate. In this case, besides the standard chrome-plated or white colour (RAL 9010), nozzles of any RAL colour can be ordered.

Technical specification

Type: Sidewall
Material: Brass/Stainless steel
Ring surface treatment: NiSn
Water pressure: 6 – 16 bar
Drop size: DN90 < 300μm
K-factor: 23.0 l/min/√bar
Ceiling height: Max 2.5 m
Distance from the ceiling: 0.1-0.2 m
Installation spacing of sprinklers: Max 4 x 4.5 m, 2 m from the corner
Response time index (RTI): Fast Response < 45m/√s
Joint/thread: ½” BSP or ½” NPT
Nominal activation temperatures: 57, 68, 79, 93, 141 ºC
Approvals: DNV TA F-20169, LR MED 1150274 & TA SAS F110370