* ENPRESS Pressure Vessels are high quality tanks that are manufactured using an exclusive co-polymer polypropylene mixture for its inner liner assembly. * This unique polypropylene inner assembly offers exceptional performance in both cold and hot temperature situations * Enpress vessels also provide superior chemical and impact resistance compared to traditional polyethylene inner liner tanks. * High Temperature & Pressure Injection Process ensure Enpress tanks are without leaks * 10 Year Manufacturer Limited Warranty * Made in USA