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OH-PX1 nozzle is a patented automatic semi-concealed water mist nozzle, designed to be installed into fixed low pressure systems. OH-PX1 is ideal for fire protection of shopping and storage spaces and other similar locations with smooth walls and ceilings. The nozzle provides reliable fire prevention combined with low water consumption. OH-PX1 nozzles are recessed into ceilings 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: Pendent
Material: Brass / stainless steel
Frame surface treatment: NiSn
Water pressure: 9 – 16 bar
Drop size: DN90 < 300μm
K-factor: 23.0 l/min/√bar
Installation height (MSC 264(84)): 1.25 – 2.5 m
Installation height (MSC 1272): 2.5 – 5.0 m
Installation spacing of sprinklers (MSC 264(84)): Max 4 x 4 m, max. 2 m from walls
Installation spacing of sprinklers (MSC 1272): Max 3.5 x 3.5 m, max. 1.75 m from walls
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

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