Factory Mutual Approved Ducting
Factory Mutual Approved PVC
Prior to the availability of KCH’s PVC ducting, a company purchasing fire insurance requiring Factory Mutual (FM) ratings had little choice in the material of construction for Pollution Control, Fume Exhaust Ducting. To meet the requirements of insurance companies, most companies had to purchase Fiberglass Ducts with extensive internal water sprinkler systems.
When KCH introduced PVC duct, the insurance companies had no test results to reference as proof of the self-extinguishing properties of PVC. KCH successfully performed the needed tests; the results showed that KCH’s un-plasticized PVC ducting does not burn readily. It also softens, melts, and collapses in on itself under the heat of fire, eliminating the oxygen source and stifling the flame. In contrast, fiberglass ducting tends to maintain its shape, potentially spreading the flame through the ducting system and the facility.
We are proud to be the pioneer behind FM approved PVC duct, and still stand as one of very few suppliers of this unique duct solution. By removing the requirements for internal sprinkler systems in the duct system, KCH has saved customers time, money and headaches. Internal sprinkler systems require costly yearly maintenance and extensive installation requirements. Properly hung KCH brand Firesist duct has the same installation time and effort as standard PVC duct, with no costly yearly maintenance.
