CHECK VALVE 1 1/2" NPT ANKA: ANKA fittings are high pressure, insert- compression poly pipe fittings made from high quality, potable, non corrosive and durable fiberglass reinforced nylon. An easy to use and leak free connection for Rural, Municipal, Pump and Pressure, Irrigation, Agricultural, Hydroponic and Marine applications. • Non Corrosive – made from extremely durable, high quality potable materials • Fiberglass reinforced nylon • Easy to use Reuseable, one piece fitting • Leak Free* – Unique captive self threading nut • UV Stabilized – for above ground or below grade applications • No Tools required • Designed for use with all ID (inside diameter) rated pipe • Can be used on poly pipe, clear or braided hose, garden or wash down hose