Plymovent new hose assembly addresses NFPA standards
By Fire Fighting in Canada
Exhaust removal manufacturer Plymovent has a new High Temperature (HT) hose and other products that address and meet NFPA standards on engine exhaust gas temperature.
Since 2007, the temperatures of the typical diesel truck emissions, including fire trucks, have risen. The addition of hazard-reducing exhaust treatment systems such as diesel particulate filters (DPF) and exhaust gas recirculation (EGR) have increased the heat generated by the engine, and thereby the exhaust, raising concerns about fire, injury and product damage.
NFPA specified in its 1901 Standard for Automotive Fire Apparatus (220.127.116.11.7) that engine exhaust gas temperature shall not exceed 455 C (851 F) when measured at the exit of the exhaust pipe during normal DPF regeneration.
Plymovent provides a HT hose assembly for its upper, mid and lower hoses. The HT hose is rated at 482 C (900 F) continuous and 566 C (1,050 F) intermittently.
In 2015 the Plymovent hoses were sent to a third-party testing company and withstood temperatures up to 1,221 F during a 40-minute test. Included in the test was the more rigid lower hose component, and because that is the hose that takes on the highest temperatures, this was a significant achievement.
For more information visit, www.plymovent.com.