It's the number of months in a year, hours on a clock face, and the number of members on a typical court jury. It is mentioned in the New Testament of the Bible, including Jesus' selection of 12 apostles. The Greeks worshipped 12 major gods of Olympus. The significance of number 12 is visible elsewhere as well - from a dozen eggs to the 12 ribs on the average human to the 12 inches that comprise a foot.
We can go on, but we made the point, did we not?
We take you behind the scenes of how we make our cylinder valves, no marks for guessing – divided into twelve processes, each as important as the other (okay, we have a few favourites but let's keep it secret for the sake of this theme).
We invite you to visit us to see the manufacturing in action, all under one roof.
Cylinder valves markings are carried out by laser etching or metal stamping. Standard markings include manufacturer’s identification, date of manufacture, inlet and outlet connection, specification and batch number for traceability.
Additional markings may be provided for gas service, pressure rating, series number, etc. Pressure relief devices are marked for pressure, temperature and flow rating.
Nickel Chrome plating is carried out on brass valves used for medical application to provide pleasing aesthetics and prevent the oxidation of brass. The gas wetted areas, including inlet, outlet & the internal surface of the valve body & components, are plugged to avoid plating contamination in service.
Valve bodies and components are deburred manually or using machines. Deburring removes sharp corners and unwanted pieces of material that may remain attached to the workpiece after machining.
Valve bodies and components are degreased in a close circuit using vacuum solvent technology to remove oil and grease, cutting fluid and particulate matter.
The degreasing cycle involves pre-cleaning, immersion washing, ultrasonic cleaning, vapour degreasing and drying.
Each valve is pressure tested for internal and external leak tightness at maximum service pressure by bubble test or pressure differential method.
Valves are packed in customized foam trays made on-site to provide cushioning and protection during transport. The foam used is free from CFCs or HCFCs and reusable, biostable and non-degradable.
Valves for Oxygen service are heat sealed to maintain the integrity of the cleaning process.