Circular Silencer Plastic construction TROX GmbH Telephone +49/2845/2 02-0 Heinrich-Trox-Platz e-mail [email protected]

Contents · Description Description Construction · Dimensions Insertion loss Order details TROX circular silencers Type CAK made of PPs plastic, are intended for use in room air conditioning systems subject to aggressive media. In air distribution systems they can be used to attenuate fan noise and to reduce the air-regenerated noise of air terminal units. To avoid sound transmission through ventilation ducting between adjacent rooms they can be integrated into the duct system as so called cross talk silencers. The outer casing and perforated inner duct are PPs plastic. Absorption material non-combustible...

Construction · Dimensions Constructional features – – – – Circular silencer in rigid construction Insertion loss tested according to DIN EN ISO 7235 Casing air leakage complies with DIN EN 1751, class C Construction with spigot connections suitable for circular connecting ducts to DIN 8077/8078 – Flange construction with drilled holes Materials – Outer casing and perforated inner duct are flame resistant plastic polypropylene PPs to DIN 4102, fire rating class B1 – Lining is mineral wool conforming to DIN 4102, fire rating class A2, with RAL quality mark RAL-GZ 388, bio-degradable as defined...

Insertion loss Insertion loss De From the test conditions described in DIN EN ISO 7235, the duct/reverberation chamber method was chosen. This method involves an empty duct being exposed to a noise, the third octave levels of which are measured in the connecting reverberation chamber under defined conditions. The silencer to be tested is then inserted in the empty duct and the measurement repeated. The difference between the two measurements is the “insertion loss De“. in Hz: Octave band centre frequency The octave values are calculated from the third octave measurements. Pressure drop; Air-regenerated...

Order Details Specification text Type CAK circular silencer for ventilation systems with aggressive media; insertion loss tested to DIN EN ISO 7235. Absorption material non-combustible mineral wool conforming to DIN 4102, fire rating class A2, with RAL quality mark RAL-GZ 388; with glass fibre scrim facing covered with perforated plate as protection against erosion suitable for air velocities up to 20 m/s. Outer casing and perforated inner duct made of flame resistant polypropylene (PPs). Spigot connections on both ends suitable for circular connecting ducts to DIN 8077/8078. Casing air leakage...