They also eliminate long checking procedures in the build-up to complicated pipe work, where in the past such procedures have represented a substantial part of the cost of installation. In this system the coding can be either of a re-codeable type or fixed code type. In the re-codeable execution the coding on a given flange can be changed with special safety tooling to change it to an alternative code to meet service requirements in which the particular flange is to be used. Alternatively the coding will be fixed, which will dedicate a set of flanges to a particular code, and thus duty, which cannot readily be altered. Seetru Coded Flanges are available for Metric, BS and ANSI flanges, but they can also be provided for any other standard which may be specified.
Flange material is generally stainless steel, but can be changed to meet requirements.
This type of coupling is widely used in petroleum exploration, production and distribution. It consists essentially of the male and female unit which are locked together by the rapid action of tensioning levers acting on elastomeric seals. The Seetru Coded Couplings fully maintain existing practice in this field as well, and provide high quality precision cast steel coupling elements. Coded Screwed Couplings Screwed couplings are widely used in fuel distribution and also work with flexible hoses. Sealing is mainly achieved with elastomeric seals, but other types of gaskets may also be used.