When carrying liquid or bulk loads in tank semi trailers, the loading and/or unloading of freights involves the use of special hoses, gaskets, connectors, fittings, flanges and adapters. All the accessory parts for tank trailers are made of appropriate materials, such as rubber, food grade rubber, steel, viton, stainless steel AISI 316L, brass and duralumin, and are divided into food and non-food accessories. Hoses can be up to 25m in length and can be connected by using couplings (fittings) of various types (Kamloc, MK, VK, MB, VB, BSP, dry coupling, French coupling) and diameters (from DN10mm - 1/8" inch to  DN324mm - 12" inch). Non-food and food tankers have different types and modifications of such accessories. These hoses and connectors allow universal adjustment of each tank trailer to connections and modifications possessed by the client and increase the unloading speed and the transportation distance during the unloading process.