Double Eccentric Butterfly Valve

Size Range

2"-48"

Pressure Class

125lbs/150lbs

Standards

API 609, BS 5155, DIN 3202, ISO 5752, ISO 5211

End connection

Wafer / Lug / Flanged

Operating temperature

-10°C to +150°C

Configure your variant(manually adjust box on the right if you require a different spec)

Size

NPS 2" (DN50)NPS 2 1/2" (DN65)NPS 3" (DN80)NPS 4" (DN100)NPS 5" (DN125)NPS 6" (DN150)NPS 8" (DN200)NPS 10" (DN250)NPS 12" (DN300)NPS 14" (DN350)NPS 16" (DN400)NPS 18" (DN450)NPS 20" (DN500)NPS 24" (DN600)NPS 30" (DN750)NPS 36" (DN900)NPS 48" (DN1200)

Pressure

Class 150

End connection

Flanged DIN 125lbs / 150lbsFlanged BS 125lbs / 150lbsFlanged ISO 125lbs / 150lbsFlanged ANSI 125lbs / 150lbsFlanged AS 125lbs / 150lbsFlanged JIS 125lbs / 150lbs

Materials

All available material options per part. Click a pill to set it in the configurator.

body

GGG50Cast Iron

disc

GGG50

seat

EPDM

stem

SS420

bushing

BRONZEEPDM

packing

EPDM

bottom shaft

SS420

cover

GGG50

disc sealing

EPDMNBR

fasteners

A2-70

retainer

CS EPOXY COATED

stuffing flange

GGG50

support

CS

taper pin

SS416

top shaft

SS420

Operating media

Actuation options

Approvals

Features

• Double eccentric (double offset) disc design
• Offset disc minimises disc-to-seat contact during operation, reducing wear and operating torque
• Resilient seated construction
• Suitable for high-pressure and large-diameter pipelines
• Tight shut-off under fluctuating flow conditions
• Double-flanged body with flange drilling to PN10, PN16, JIS 10K and ANSI 150 standards
• Triple-offset / eccentric disc configuration visible on sectional diagram
• Gearbox (worm gear) actuation option
• Electric actuator with manual override handwheel option
• Large-diameter flanged face with reinforced disc (cross-ribbed disc on large sizes)
• White/PTFE-lined seat visible on electric-actuated variants
• Rubber-lined seat visible on electric-actuated variants
• Pedestal/foot support on large-bore valves
• Part numbers visible in sectional cross-section: parts labelled 1–12 (body, disc, shaft, seat, seals, gland, etc.)

Notes

• Available in a range of materials, flange standards, and actuation options to suit various project needs.
• Dimensions table referenced in HTML but no tabulated data was present in the page.
• Diagram: Image 8: Front elevation and cross-sectional assembly drawing of a double-flanged butterfly valve. Labels dimension references DN, D2, D3, b, f, l, H, C, d0, g, n-Ød1 on the body flanges. An inset top-right shows the upper-flange/keyway dimensions: z-Ød, ØE, ØK, b. Cross-section labels 12 component parts (1–12 and 11) indicating body, disc, shaft, seat ring, O-rings, packing gland, and associated fasteners.

Description

A double eccentric (high-performance) butterfly valve with an offset disc design that minimises contact between disc and seat during operation, reducing wear and operating torque. Designed for high-pressure and large-diameter pipelines requiring tight shut-off. Available in a range of materials, flange standards, and actuation options.