The lightweight, small diameter, rubber covered attack hose that packs a big punch. The heat and chemical resistant, nitrile/PVC through-the-weave design provides peak performance and maximum flow. With a test pressure of 600 psi and a range of temperature tolerance from -35 °F to 1200 °F, Dura-Flow clearly outperforms conventional rubber covered attack lines. A rugged, thick ribbed outer jacket construction makes the hose highly resistant to kink, impact, punctures, cuts and abrasion. Ozone resistant, maintenance-free and no drying required, make Dura-Flow a reliable weapon in a firefighter’s arsenal. NFPA compliant and UL listed.e and preferred by metro cities across the US and Canada — available in exclusive FDNY Spec with 1.88" inside diameter and heavier construction. This reliable, double jacket fire hose is UL Listed, tested to 600 and 800 psi and meets MIL-H-24606 latest edition. Features a 10-year warranty and lifetime liner delamination guarantee.