Stainless Steel Gas Butterfly Valve Type AK210G — CF8M with NBR Seat for Gas Applications
The stainless steel gas butterfly valve type AK210G is a butterfly valve in CF8M (1.4408) with a DVGW gas-approved NBR seat ring to DIN EN 13774. It holds DVGW gas approval. Moreover, body and disc consist of CF8M. Furthermore, the shaft is AISI 316. In addition, the NBR seat is DVGW-approved for gas service.
This wafer-style butterfly valve covers nominal sizes DN50 to DN200. It is available in pressure ratings PN10 and PN16 and mounts between PN6/10/16 or ANSI Class 150 flanges. Moreover, the face-to-face length follows DIN EN 558-1 Series 20. Furthermore, the mounting flange conforms to ISO 5211. As a result, it accepts lever, gearbox, pneumatic or electric actuators. The operating temperature range is −10 °C to +90 °C. Finally, FERGO supplies the stainless steel butterfly valve DN200 ex stock.
Technical Data and Connection
The stainless steel gas butterfly valve is available in nominal sizes DN50, DN65, DN80, DN100, DN125, DN150 and DN200. In addition, pressure ratings cover PN10 and PN16 at an operating temperature range of −10 °C to +90 °C. Furthermore, the wafer body mounts between mating flanges PN6, PN10, PN16 or ANSI Class 150. Moreover, the face-to-face length to DIN EN 558-1 Series 20 is the standardised short length for wafer butterfly valves. In addition, the butterfly valve CF8M DVGW comes with lever, gearbox, pneumatic actuator (single-acting or double-acting) or electric actuator (24 V, 230 V, 240 V AC/DC or 400 V three-phase). Finally, optional accessories include limit switch box, solenoid valve, positioner and stem extension.
Materials and Approvals
Body and disc consist of CF8M (1.4408). Moreover, this austenitic stainless steel casting offers high resistance to corrosion and aggressive media. Furthermore, the shaft in AISI 316 provides additional corrosion resistance. In addition, the NBR seat ring is DVGW gas-approved to DIN EN 13774. Moreover, the concentric design with a centrally mounted disc ensures reliable tight shut-off. Finally, the ISO 5211 mounting flange allows direct attachment of different actuator types without adaptation.
Applications and Ordering
The stainless steel gas butterfly valve protects pipelines in gas distribution, industrial plants and demanding environments where a stainless steel body is required. Moreover, the DVGW gas approval to DIN EN 13774 confirms suitability for gas pipelines. Furthermore, the butterfly valve PN16 stainless gas handles gas and other industrial media at temperatures from −10 °C to +90 °C. In addition, the compact wafer design simplifies installation in existing pipelines. Finally, for custom solutions, project quantities or technical advice, the FERGO team is available.
