Hy-Lok Clean Fittings are manufactured for high purity gas applications to ASME/ASTM. They are manually or automatically orbitally welded. Passivation is performed in a nitric acid atmosphere. Final cleaning is carried out in an ultrasonic bath with demineralised water with a specific resistance of over 18 MΩ after passivation.
|316 stainless steel:||S316|
|316L stainless steel:||S316L|
|316L stainless steel melted under a single vacuum:||VV6L|
|316L stainless steel melted under a double vacuum:||SM6L|
|Bar material:||ASME SA479, ASTM A479, ASTM A276|
|Forged parts:||ASME SA182, ASTM A182|
Hy-Lok Clean welding fittings and fittings with metal sealing washer are made from the materials listed in the material table and designed in accordance with ASME Code B 31.3 for pressure pipelines and for a permissible load of 20,000 psi for process pipelines (equivalent pipe wall thicknesses to ASTM A269).
The pressure dimensioning of the fittings also depends on the application temperature. The maximum permissible working pressure at a temperature above 37°C (100°F) can be determined using the factor in Table 1.
In order to determine the maximum permissible pressure in accordance with ASME B31.1 for power piping, the working pressure has to be multiplied by a factor of 0.94.
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