About this item: This Water Worker 86 Gal. Pressurized Well Tank helps you keep your water clean and safe. This tank is a direct-fit replacement for a majority of installed well tank bases and it's constructed of deep-drawn steel with a stainless steel waterway lining for long-term use. For easy up keep, it maintains its air charge for years because it's pre-charged. The steel shell supports the water weight and a polypropylene liner separates the water from the shell to prevent taste or odor in your water. Specifications: Designed as a direct-fit replacement for the majority of installed well tank bases Constructed of deep-drawn steel for durability Polypropylene-lined steel supports water weight to ensure water never sits in loose-fitting vinyl or rubber bags that can fold, crease and wear NSF certified for clean safe drinking water Polypropylene liner separates water from the steel shell to prevent taste or odor from being absorbed into the water, formed liner fits the steel shell for added durability Sizing - count the number of water fixtures in and outside the home and multiply that number by three; fixtures include faucets, spickets, shower heads, dish washer, washing machine, etc. for hot tubs and sprinkler systems add one to two fixtures for each System connection: 1-1/4 in. NPTF, threaded malleable iron elbow with stainless steel insert and connection does not include plastic that can cross-thread or crack Thick diaphragm keeps water separate from pre-charged air and helps to reduce air loss Molded diaphragm offers an ideal fit, sits on top of the water and will not fold, crease or drag against the steel shell 44 gal. of total volume; plain or galvanized tank equivalent of 120 gal. Pre-charged to 38 PSIg; 100 PSIg maximum working pressure Maintains air charge for years to provide easy upkeep Two-part water-based paint system sprayed over a durable two-part epoxy primer provides corrosion resistance and safe paint covering 1-1/4 in. NPTF system connection uses malleable iron for dependability Well tanks are not be used in reverse osmosis systems Well tanks are not be used for water expansion in thermal (water heater) or hydronic (boiler/solar) systems Accessories shown in alternate image sold separately