Fittings are also utilized in all installations constructed with PEX pipe, including FIRAT PEX clean water systems, FIRAT PEX mobile heating systems, and FIRAT PEX underfloor heating systems. The Fırat Pex Pipe Metal Fittings' body, inner components, and fittings are made of MS 58 brass, and EPDM O-Ring is used to guarantee tightness.