Polished stainless steel housing with butyl rubber diaphragm provides maximum corrosion resistance. Easy to install and maintain, this 2gal. capacity tank maintains consistent water pressure and temperature. Reduces pump cycling. Pre-charged to 20psi. Includes mounting feet for easy installation and a mounting bracket to accommodate any type of Shurflo water pump. Material: Stainless steel with butyl rubber diaphragm Capacity: 2gal. Pressure: 100psi Port Sizes: 1/2" NPT female Dimensions: 12"L x 9"dia. UL Approval: Marine UL Listed, NSF certified Warranty: One year