Triple-Offset Butterfly Valve – BU04

The benefits of the BU04 Triple-Offset Wafer Style Butterfly Valve include:

  • Laminated metal seat arrangement provides zero-leakage bi-directional sealing
  • The secondary metal seat provides a fire-safe seal in the event of a fire, qualified to ISO 10497/API607
  • The triple-offset design removes seat wear prolonging valve service life
  • Drilled or threaded alignment lugs are offered as standard
  • Smooth and quick operation due to using a metal-polymer bearings as standard
  • The body outside diameter provides an additional alignment of the valves to pipeline flanges
  • Standard mounting interface(s) enable easy actuation
Size Range3″ – 24″ + (Larger sizes upon request)
Temp Range-46°C to +232°C



Quotation

Specifications

Technical Data

Size Range

3″ – 24″ + (Larger sizes upon request)

Temperature Range

-46°C to +232°C

Body Style

Wafer

Operator

Gearbox

Shut Off Class

API 598 (Zero Leakage), ISO 5208 Rate A

Materials

Body Materials

6Mo, Bronze, Duplex, Hastelloy® B, Hastelloy® C, Inconel® 625, Inconel® 825, Monel®, Nickel Aluminium Bronze, Super Duplex, Titanium

Obturator materials

Nickel Aluminium Bronze, Monel®, Bronze, Duplex, Super Duplex, Titanium, Inconel® 625, Inconel® 825, 6Mo, Hastelloy® B, Hastelloy® C

Stem Materials

Monel®, Duplex, Super Duplex, Titanium,
Inconel® 718

Seal Materials

PTFE, Graphite

Design Standards

Valve Design

API 609 Cat. B

Face to Face

API 609, Table X

Pressure Testing

API 598

Accreditations

PED 2014 / 68 /EU