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Flange Facing Types One end of the flex joint is a flat face to match the pump face and the other end is raised face to match the flange. Flat Face (FF) – Typically these flanges are used on pump facings or on fiberglass flanges where the torque of compressing the gasket will damage the flange body. They are…
The flange face finish is determined by the standard used and measured as an Arithmetical Average Roughness Height (AARH). An example would be ANSI B16.5 which specifies face finishes within a range 125AARH – 500AARH (3.2 Ra to 12.5 Ra). Cold Water – It has a mirror like finish. This is made with a wide tool…
Pressure equipment and gas appliances Pressure Equipment Directive (PED): The Pressure Equipment Directive (97/23/EC) was adopted by the European Parliament and the European Council in May 1997. It has initially come into force on 29 November 1999. From that date until 29 May 2002 manufacturers had a choice between applying the pressure equipment directive or…
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