We are an authorized dealer for Key Hose products and can only sell within New York State. KEY HOSE PRO-FLOW A lightweight, heat-resistant, large diameter supply hose that delivers superior flow during fire ground operations. Ozone and chemical resistant, the nitrile/PVC through-the-weave design allows the hose to expand under pressure — decreasing friction loss and increasing water flow.The thin rib rubber outer cover offers increased resistance to impact, punctures, and abrasion. Reliable, maintenance-free, and no drying required, make this the ideal supply hose for municipal and industrial fire departments. NFPA compliant and UL Listed*. Colors Features Lightweight, large diameter with superior flow capability Raised thin rib construction resists cuts, punctures, impact, and abrasion Through-the-weave design for increased durability Heat, chemical, and ozone resistant *10-year manufacturer’s warranty Specifications Diameter Part No. Service Test Proof Test Burst Test Bowl Size Weight Uncoupled **4" RC40-500 250 psi 500 psi 750 psi 4¼" 0.74 lbs/ft **5" RC50-450 225 psi 450 psi 675 psi 5¼" 0.93 lbs/ft 6" RC60-450 225 psi 450 psi 675 psi 6¼" 1.35 lbs/ft *UL Listed to 300 psi | **UL Listed to 200 psi Pro-Flow is made from 100% high tenacity synthetic polyester yarn, circularly woven and completely protected by a through-the-weave extruded PVC/Nitrile rubber, forming a single homogeneous construction without the use of glues or adhesives of any type. Pro-Flow is guaranteed to withstand 10,000 cycles on the Taber Abrasion Machine (H-22 Wheel: 0.5 kg) without exposing the liner. Pro-Flow coupling options are as required by the purchaser, expansion ring threaded, Storz clamp ring, etc. Pro-Flow meets or exceeds the requirements of NFPA 1961. Manufacturer's Warranty Information *Pro-Flow hose shall carry a 10-year written warranty against defects in materials and workmanship. Note: 4” thru 6” hose is supplied with Storz aluminum couplings Custom lengths and special threads are available; please call Fire-End at 800-759-3473 for pricing. Spec Sheet