COI TECH Safety valves are fully European and can manufacture in AISI 316L, Carbon Steel, Brass, Aluminium Bronze, Monel, Duplex, Super Duplex, Inconel, Hastelloy, Titanium, PVC, PTFE, PP, PCTFE PVDF as standard. Coi Technology has been trading for over 40 years in the field of pressurised systems and specialises in the design, development and distribution of high and low pressure safety valves for gases, vapour's and liquids. Flowstar is their exclusive stockist in the UK and Ireland.