Adanac have been converting standard Gate, Globe, Ball and Butterfly Valves to extended bonnet for low temperature and cryogenic duty down to -196°C since 1986.

ATaCS (Adanac Testing and Cryogenic Services) was introduced in 2006. ATaCS combines the design, modification, preparation and testing of valves for cryogenic and low temperature duty.

Working directly for manufacturers, Adanac converts their standard product components allowing the manufacturer to extend their product profile.

Working with Stockists and Distributers, Adanac converts their standard off the shelf product allowing them to increase stock movement.

Cryogenic Extended Bonnet conversion designs include BS6364:1984 and other user specifications such as Shell 77/200.

Adanac's PED certification enables compliance with Pressure Equipment Regulations to be maintained following modification.

Bonnet fabrication welding is performed on-site to Third Party Approved ASME IX welding procedures by Adanac's qualified welders. Welding procedures have been qualified with impact testing at -196°C for Austenitic Stainless Steel and -46°C for Low Temperature Carbon Steels.

Cryogenic Extended Bonnet conversion generally includes for cleaning and degreasing of valve components with final assembly and pressure testing in Adanac's approved on-site Clean Room facilities.

ATaCS allows modified valves to be subjected to prototype and production testing at temperatures down to -196°C in accordance with national standards such as BS6364:1984 Appendix A and user standards such as Shell SPE 77/200 or 77/306