Butterfly Valve Type 57A / Type 56 / Type 75

Nominal diameter: Type 57A: DN 40 – DN 350

Type 56: DN 400

Type 75: DN 450 – 600 (DN 700 – DN 1500 with PDCPD)

Connector: Intermediate flanged end acc. to DIN 2501 – PN 10, ANSI Class 150, JIS 10K

Temperature range: -20°C to +120 °C (depending on material and medium)  Working pressure: DN 40 – DN 250: PN 10, at higher diameter reduced  Vacuum resistance: DN 40 – DN 125: 100%, at higher diameter reduced  Mounting length: Company standard

Body material: PVC-U, PP, PVDF, PDCPD (Typ 57 L)

Gasket material: EPDM, NBR, CSM, FKM, FKM-F

Applications:

• Chemical industry
• Pickling installations
• Flue gas cleaning plants
• Waste water filtration

Features:

• Top flang with DIN EN ISO bolt circle
• Easy change from manual to automatic mode
• Short mounting length
• Compact dimension
• Tough construction
• Continous sealing element with profiled flange gasket surface
• Only disc and seal are in contact with the medium
• High sealing perfomance at minor valve controlling torques
• Corrosion resistant
• Mounting irrespective of flow direction