prEN 1759-3

Flanges and their joints - Circular flanges for pipes, valves, fittings and accessories, class designated - Part 3: Copper alloy and flanges

Scope

This standard specifies requirements for circular copper alloy and composite flanges in Class designations Class 150 and Class 300 and nominal sizes from DN 10 to DN 900 (NPS 1/2 to NPS 36). This standard specifies the types of flanges and their facings, dimensions and tolerances, bolt sizes, surface finishof facings, marking, testing, quality assurance and materials together with associated pressure/temperature (p/T) ratings.