Shields Series 160 4-ply 1" Water Heater Hose. This water heater hose has a good bend radius, is fabric reinforced, and has an EPDM tube and cover. This hose is primarily used for critical water connections, heat exchanger, toilet intake, small engine intake, bilge pump intake/discharge, and below water line drains and scuppers. It is resistant to mild chemicals, heat, cold, ozone and saltwater. The temperature ranges from -40 degrees Farenheit to +190 degrees Farenheit. Working Pressure #1000. Sold by the foot.