THIS IS THE IDEAL PRESSURE VESSEL FOR RESIDENTIAL AND LIGHT COMMERCIAL WATER SOFTENER/FILTRATION APPLICATIONS. FIBERGLASS PRESSURE VESSELS PROVIDE YEARS OF RELIABLE SERVICE FOR WATER CONDITIONING AND FILTRATION APPLICATIONS. THESE SLIM DIAMETER OFFER UNMATCHED STRENGTH AND CHEMICAL RESISTANCE. A seamless polyethylene shell that is wound continuously with miles of fiberglass reinforcements and sealed with epoxy resin. Computer-aided winding machines and other customized equipment are used to create a product that offers outstanding performance and durability. FEATURES & BENEFITS 9" x 48" 2-1/2" Top Opening Black Color Materials of construction: Inner shell of polyethylene Maximum operating pressure: 150 psi Maximum operating temperature: 120°F