SEM-SAFE® high-pressure water mist nozzle installation kit Nozzle installation kit specification Cover plate outer diameter Cover plate surface Cover plate material Clamp disc outer diameter Max. thickness of ceiling for “spider” weldment 81 mm Brushed Ferritic stainless steel 76 mm 30 mm Nozzle installation methods The SEM-SAFE® nozzle installation kit can be used for the following purposes: simply covering the nozzle or installing the nozzle in the ceiling, while also ensuring nozzle coverage. Referring to the two purposes listed above, there are actually three methods in total of installing the nozzle using the SEM-SAFE® nozzle installation kit: 1. Nozzle cover only - by using cover plate and clamp disc 2. Nozzle installation directly in the ceiling or wall with screws - by using cover plate and clamp disc 3. Nozzle installation directly in the ceiling or wall with “spider” weldment - by using cover plate, clamp disc and “spider” weldment Common for all three types of installation is that it carried out from below the ceiling as the last part of the installation process after pressure testing. Clamp disc Cover plate “Spider” weldment 901-90-00029 2 © Copyright Danfoss Fire Safety A/S | 2020.03
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