Butterfly valve - S62 | Alfa Europe | Philippopoulos s.a.
Butterfly valve - S62 | Alfa Europe | Philippopoulos s.a.

Butterfly valve - S62 | Alfa Europe

Butterfly Valve Lug Alfa Europe S62

The S62 is a concentric lug-type butterfly valve designed for installation between flanges in industrial isolation networks. The lug construction allows for bolted connection to the flange and should be selected when mechanical retention of the valve is crucial for maintenance or line section isolation. The actual end-of-line rating must be confirmed per DN and operating pressure.

Technical Specifications

  • Sizes: DN40–DN600.
  • Connection: lug / with lugs.
  • Flanges: EN 1092 PN6/PN10/PN16, ASME B16.5 Class 150, JIS 5K/10K/16K.
  • Face-to-face: EN 558-1 Series 20 / API 609 A.
  • Pressure: various classes up to 16 bar.
  • Top flange: ISO 5211 for manual or actuator operation.

Temperature and Seat

The product page specifies a temperature range of -30 to +110 °C, while Alfa Europe's technical sheets provide a general series range of -40 to +250 °C. Selection is not based solely on the general range; the seat material is crucial:

  • NBR: -15 to +80 °C.
  • EPDM: -23 to +120 °C.

Construction Materials

Available bodies: EN-JS1030 ductile iron, ASTM A216 WCB, stainless steel 1.4408, and aluminium bronze BS 1400 AB2. Discs are available in BS 1400 AB2, EN-JS1030, SS 1.4408, or SD 2507. Shafts are available in SS 410, SS 416, SS 1.4462, and SD F53.

Operation and Automation

  • Bare shaft: for pneumatic or electric actuator.
  • Lever operated: DN40–DN200.
  • Gearbox operated: DN40–DN600, for larger diameters or increased operating torque.

Typical Applications

Suitable for water, HVAC, cooling, auxiliary industrial circuits, low-pressure air, and neutral fluids. For seawater, chemicals, elevated chlorides, or high temperatures, body, disc, shaft, and liner checks are required.

FAQ

When to choose lug over wafer?
When mechanical retention with lugs or easier pipeline section isolation is required.

Is it a control valve?
Not primarily. It can perform limited throttling, with differential pressure, flow velocity, and seat wear control.

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
Seat (Options)
  • NBR

Datasheet and documents

Description

Range: Size DN40 to DN600

Flange connection: EN 1092 PN6, 10 and 16 - ASME B16.5 cl. 150 - JIS 5K/10K/16K/

Temperature range: -30 to 110 °C

Face to face: Lugged short, acc. EN558-1/2 Series 20 / API 609 A

Certificates

Certificate WRASCertificate DVGW

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