Kuriyama's Tigerflex® J™ Series Standard Duty Suction Hose features a PVC tube with a rigid PVC helix. Sizes 3/4" - 5" have a smooth outer cover for bonding and provides increased pressure rating. Sizes 6" - 8" have a convoluted outer cover that provides increased hose flexibility. The J™ Series is approved by the Mine Safety and Health Administration (MHSA) for flame-resistance for use in underground mines as a water transfer hose. General applications include agricultural liquid fertilizer, air seeder lines, drain lines, irrigation lines, mining applications, pumps, trash, rock dusting, standard duty water suction, and pumps, rental, and construction dewatering.