Our standard ro water tanks offer quality water storage for use with most residential reverse osmosis systems. These durable metal tanks will deliver a continuous and stable Supply of purified water at a fast flow rate with high volume suitable for average to large size families. Supported by fully enclosed polypropylene and butyl reservoirs, these storage tanks provide airtight protection against leaks. Their stainless steel connectors ensure leach-free integrity while post-cured diaphragms eliminate the possibility of odors from the tank. Individually pressure-tested for safety, all our tanks are certified and ce approved for materials quality, safety, and durability making them suitable for use anywhere in the world. Specifications: dimensions: 11 inch D x 15 inch h weight: 10 lbs. Optional tank ball valve: 1/4 inch connection to 1/4 inch or 3/8 inch tube size (not included with the tank) apec water does not distribute or sell our products to any 3RD party sellers on Amazon. Please purchase genuine apec water products from Amazon or apec water directly for authenticity.