981.27-Wika-Diaphragm In-Line Seals For Flange Connections, Flange Type, Germany

Model 981.27

Nhà sản xuất Wika, Germany
Diaphragm In-Line Seals
For Flange Connections, Flange Type

Applications

• For direct, permanent installation in pipelines
• For flowing, pure and aggressive media
• Chemical process industry
• Petrochemical industry

Special Features

• Completely round, no corners and edges, European Patent No. 0629846
• For direct installation between two flanges
• Wide choice of special materials

Desciption

Process connection

• For flanges following EN 1092-1 / ASME B 16.5
• DN 25, 40, 50, 80, 100 or 1″″, 2″″, 3″″, 4″″
• Nominal size: see drawing and tables (DN)
• Sealing face, Form B1 or ASME RF 125 … 250 AA

Pressure rating

• PN 16/40 or Class 150/300

Pressure ranges

• preferably mounted to pressure gauges NS 63, 100, 160 or pressure transmitters, Pressure ranges 0 … 0.6 to 0 … 40 bar

Body and material of wetted parts

• Stainless steel (AISI 316L)

Measuring instrument connection

• Pressure gauge or transmitter directly welded, process pressure transmitter with threaded adapter

Options

Process connection

• Larger nominal sizes
• Other flange connections on request
• Sealing faces per EN 1092-1, form B2 or per ASME B 16.5, RF 125 AA, 500 AA, RFSF;
• EN 1092-1 groove and tongue; projection and recess; ASME B 16.5 snap ring groove form RJF (limited for special materials, please request)
• Flame arrester approved for Zone 0

Material of wetted parts

• Staniless steel 1.4571, 1.4435, 1.4541, Monel, Hastelloy B3, C4, C22, C276, tantalum
• PFA coating max. +260 °C
• ECTFE (Halar®) coating max. +150 °C

Measuring instrument connection

• Capillary, when ordering please specify: length of capillary
• Cooling tower (for directly mounted gauge when fluid temperature > +140 °C)

Capillary

• Custom lengths between 1 and 15 m
• Soft polyethylene or PTFE armour