Technical Specifications and Standards

The document provides detailed specifications for pipe flanges and expansion joints, including nominal diameters, nominal lengths, drilling standards, maximum working pressures, and permissible movements.

Nominal Diameter and Length

Nominal diameters range from 32 mm (1 1/4 inch) to 200 mm (8 inch), with corresponding nominal lengths (Ln) specified in millimeters. The lengths vary depending on the nominal diameter and pressure rating.

Drilling Standards

Drilling standards referenced include NF EN 1092-1, NF EN 1759-1, and ASME B16.5. Other drilling options such as PN 6, PN 25, PN 40, CL300, B.S.10D, and B.S.10E are also available. Floating flanges are offered in zinc-chromated or stainless steel (316L).

Pressure Ratings and Working Conditions

• Pressure ratings include PN 10, PN 16, PN 20, and CL150.
• Maximum working pressures are limited by the drilling standard used.
• Special cases specify working pressures of 25 bar with a maximum temperature of 70°C, and 16 bar with a maximum temperature of 140°C.

Steel Ring Requirements

Steel rings are required for vacuum conditions greater than a specified percentage (not explicitly stated). Vacuum end thrust for pressure = 1 bar at nominal length (Ln) is considered.

Permissible Movements

• Angular movement (α°) is generally 10° or 20° depending on size.
• Shearing, lateral, elongation, axial, and compression movements are specified with maximum values, noting that these maxima do not apply simultaneously.
• Lateral exceptional displacements are limited to 30 mm for 100 cycles.

Weight and Dimensions

Approximate weights are provided in kilograms and daN for each nominal diameter and pressure rating. For example, a 32 mm diameter flange weighs approximately 2.4 kg, while a 200 mm flange weighs about 12.2 kg.

Material and Temperature Range

The inner lining grade is specified for working temperatures ranging from -35°C up to +70°C or +140°C depending on the grade (ES).

Manufacturer Information

Produced by anvis Decize S.A.S, located in Decize Cedex, France. Contact details include an email ([email protected]) and website (www.dilatoflex.com).

Critical Information Summary

• Ensure compliance with drilling standards (NF EN 1092-1, NF EN 1759-1, ASME B16.5).
• Observe maximum working pressures and temperature limits based on flange rating.
• Steel rings are mandatory for vacuum applications exceeding certain thresholds.
• Maximum permissible movements must be respected to avoid damage; lateral displacement limited to 30 mm for 100 cycles.
• Material selection and inner lining grade must match operating temperature requirements.