Butterfly valve - S64 | Alfa Europe | Philippopoulos s.a.
Butterfly valve - S64 | Alfa Europe | Philippopoulos s.a.
Butterfly valve - S64 | Alfa Europe | Philippopoulos s.a.
Butterfly valve - S64 | Alfa Europe | Philippopoulos s.a.

Butterfly valve - S64 | Alfa Europe

Butterfly Valve Lug Alfa Europe S64

The S64 is a butterfly valve with a lug / double flanged pattern and bonded liner, designed for maritime and industrial flow isolation networks. It covers DN40–DN1200, designed according to EN 593 and face-to-face EN 558-1 Series 20. Connection standards include DIN PN6/10/16/25, ANSI B16.5 Class 150, and JIS B2211 5K/10K.

Operating Limits

  • Pressure: up to 25 bar for DN40–DN600, up to 16 bar for DN700–DN1200.
  • Temperature range: -40 to +250 °C, actual limit depends on seat material.
  • Vacuum: up to 1×10⁻³ / 0.2 Torr absolute.
  • Top flange: ISO 5211 for actuator or manual operation.

Materials and Seats

Available bodies: EN-JS1030 ductile iron, ASTM A216 WCB, SS 1.4408, BS 1400 AB2 aluminium bronze. Discs available in BS 1400 AB2, EN-JS1030, SS 1.4408, or SD 2507. For seawater, aluminium bronze, stainless, or duplex options are considered based on chlorides, temperature, and flow rate.

Seats:

  • NBR: -15 to +80 °C
  • EPDM: -23 to +120 °C
  • Viton: 0 to +200 °C
  • Silicone: -40 to +230 °C

Handling Options

  • Bare shaft: DN40–DN1200 for pneumatic or electric actuator.
  • Lever operated: DN40–DN200 for local operation.
  • Gearbox operated: DN40–DN1000, suitable for larger diameters and higher torque.

Typical Applications

The S64 is used in seawater cooling, ballast, bilge, freshwater, HVAC systems on ships, pumping stations, and auxiliary lines. The lug design is chosen for better mechanical retention compared to wafer. End-of-line duty must be confirmed by the manufacturer based on DN, pressure, and loading direction.

FAQ

Is it suitable for throttling?
Only for limited throttling. Continuous control requires checking Kv, torque, speed, and liner wear.

What determines selection?
DN, PN, flange, disc material, seat, medium, temperature, differential pressure, and actuation type.

Standard (Options)
  • DIN
  • ANSI
  • JIS
Connection (Options)
  • Flanged (Lug)
Material (Options)
  • EN-JS 1030 (GGG40) Ductile Iron
  • 1.4408
  • ASTM A216 WCB
  • BS 1400 AB2 (Aluminium Bronze)
Pressure Rating (Options)
  • PN 6
  • PN 10
  • PN 16
  • PN 25
Seat (Options)
  • NBR

Datasheet and documents

Description

Range: Size DN40 to DN1200

End connection: Double flanged type S64 - Bonded liner

Flange connection: DIN PN6-10-16-25 - ANSI B 16.5 Cl. 150# - JIS B 2211 5K, 10K

Temperature range: -40 / + 250 °C

Face to face: acc. EN 558.1 series 20

Cerfifications

DNV CertificateLloyd's Register Certificate

ABS CertificateCCS Certificate

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