The brass fittings of Crystal have a copper component that is about 60% of the Alloy mix, the remaining mix being Zinc that is about 38.5%, and Lead, Aluminum etc that are less than 1.5%. As a general rule, for Casting, we follow IS 1264:1997 of the Bureau of Indian Standards.
Only those pieces of casted brass is processed further that are free from any surface impurities. Standardized dies, taps, tools and mandrills are used in machining to ensure that all products manufactured are true to specifications. There is a team of inspectors, continuously engaged in testing these products vis- -vis specifications. Inspection of Fittings is a two-tier process in Crystal. Fittings are first tested, as per IS 2500:2000 on AQL 0.25 using random sampling and subsequently online for leakages, handle movements and surface finishes.
Crystal ensures a plated finish thickness of 0.3-0.7 microns of chrome and 10-14 microns of nickel. The ARK chrome plating has a reputation of consistency and endurance acquired through scores of satisfied customers over the years. ARK is consciously implementing similar rigid standards for its premium fittings and finishes. All coloured finishes undergo a protective lacquer coating that ensures longevity in life. Gold plating is done through a special double coating process that ensures no oxidation by water even after years of usage.
ARK uses rubber, plastic and silicon, components that bear the maximum stress in most sanitary fittings, of the very highest in quality. Rubber parts have elongation strengths of more than 350% while the tensile strength is more than 150kgF/sq.cm.
ARK fittings are tested for smoothness of operation, alignment among various parts, size, weight as well as flow and leakage in addition to the points mentioned above Pressure test is done at various stages of manufacturing ranging from 300 PSI to 75 PSI.
ARK uses polybags of 400-600 gauge, corrugated boxes of 3-5 ply having bursting strength over 9 and lamination on boxes in its packing. Heavier and premium fittings are packed in socks, bubble polybags and Thermocol boxes. Empty spaces in boxes are being filled by air inflated polybags to avoid damages in transit.Outer cases have now been converted to superior corrugation with a waterproof covering.
A Hi-Tech lab has been setup to conduct from all lots of manufacturing, thickness of Nickel & Chrome, Adhesion of Surface coating, Heat test for Surface adhesion, Bursting strength test for corrugated boxes, chemical composition tests for Brass, torque test for casting thickness, water & oil tests for rubber, High pressure testing or all concealed fittings, Flow tests for Exposed fittings.
All ARK products bear a Warranty of 7 years against manufacturing defect & electronic products for 1 year. The service wing works diligently to provide customer satisfaction with the minimum possible time lag.The centralized customer care can be contacted from any part of India.