Triple-offset Butterfly Valves

Special Features & Benefits

Design complies to API 609
Valves offered with API 609 monogram
Wide portfolio of Short-pattern and Long-pattern valves
Design Validation Test – 12” Class 150 valve successfully completed 10,000 cycles
Fugitive emissions – Complies to ISO 15848-1 Endurance Class CO2 and Tightness class AH
Fire safe by design and complies to API 607/ ISO 10497 (preferred and non-preferred direction)
API RP 591 test conducted on 12” Class 150 TOBV at Element Lab, USA
CE Marking – Meets requirements of Pressure Equipment Directive 2014/68/EU, Annexure III, Module H
PED Module B1 Design examination certificate (certified by DNV) available
Atex – Meets requirements of Atex Directive 94/9/EC (ATEX), category 2 non-electrical equipment
SIL3 Safety Integrity Level to IEC 61508

Triple-offset Geometry minimises seat-seal contact – lower operating torque and cost of ownership
Compact and light weight as compared to gate valves of the same size
Hard faced in-situ body seat and flexible laminar seal ensure bubble tight sealing
Single piece Anti blow out shaft
Disc contour ensures mimimum turbulence and pressure drop
Retainer bolting complies to ASME Section VIII Div 1 Appendix 2

Description

Features riple-offset Geometry
In Triple-offset Butterfly Valves, the shaft is offset from the sealing surface
and body centreline. Further the sealing cone is rotated away from the
bore centreline to create a third offset.
The triple-offset geometry ensures that the body and disc come into
contact only at the final shut-off position. This eliminates wear and tear

Features

Size 3″ to 100″ (80 mm to 2500 mm)
ASME Class Class 150 to 1500
Design Standard API 609 Cat B Monogrammed, SIL3-capable
Soft-seated, PN6 to PN25
Integrally-moulded – Wafer, Lugged & Flanged, Up to 36” (900 mm)
Large-size Flanged Valves, Up to 120” (3000 mm)

due to interference, reduces operating torque and enhances product life.