The super elastic compound provides superior abrasion resistance, improved temperature range, and longer service life. This is an ideal hose for cesspool and septic tank applications. It will handle a variety of liquid and solid materials such as water, slurry transfer, sewage, air, chemicals, grains and pellets. The working pressure and vacuum ratings are based on ambient temperature of 70°F and will vary inversely with temperature changes. Safety Factor 3:1 Temperature range : -15 to 135°F Construction : Tube : Gray PVC Cover : Gray PVC Reinforcement : Rigid White PVC with blue outer coating. The recommended procedure to maintain serviceability of PVC hose when not in use : Disconnect and drain. Keep hose straight and flat. Avoid extreme heat and cold. Store out of direct sunlight.