Frequently asked questions.

FITVALF components are designed for high-pressure fluid handling, typically rated up to PN 16 (16 bar / 232 psi) at 20 °C, depending on pipe diameter and product type, in line with DIN and ISO standards.

Yes. Our UPVC compounds are lead-free, chemically inert and formulated in line with international drinking water hygiene standards. They do not give the water any taste, odour or harmful contaminants.

All FITVALF products are engineered and produced at Star Water Technology’s 4,000 m² facility in the İTOB Organised Industrial Zone in İzmir, Türkiye.

Unlike bronze, cast iron or stainless steel valves, UPVC is immune to galvanic corrosion, rust and attack from chlorides, acids and fertilisers. There is no scale build-up, and service life is significantly longer.

Yes. They are made from high-grade unplasticised PVC with excellent resistance to many corrosive media, including acids such as hydrochloric and dilute sulphuric acid, alkalis such as caustic soda, saline solutions and industrial cleaning agents. UPVC does not pit, rust or corrode galvanically. Always check the specific medium in the chemical resistance chart.

Depending on the fluid and its concentration, FITVALF valves come with EPDM seals, suitable for water, mild acids and alkalis, or FPM (FKM/Viton) seals, which resist aggressive chemicals and oils better.

UPVC keeps its nominal working pressure (up to PN 16) at around 20 °C. As the fluid or ambient temperature rises, the maximum permissible pressure falls. Near the upper limit of UPVC (typically 60 °C), reduce the system pressure and choose compatible seals such as FPM.

Leave the joint undisturbed for the first 10–15 minutes. Before testing up to working pressure, allow at least 24 hours of curing, or 1 hour for every 3.5 bar of test pressure in normal conditions.