High-performance Bufferfly Valve

Size Range

NPS 2" / DN50-NPS 48" / DN4000

Pressure Class

PN10 / 150LB/PN50 / 300LB

Standards

API 609, MSS SP-67, DIN 3202, BS EN 558-1, API 598, ISO 5211, Flange Drilling: ANSI B16.1 Class 125, Flange Drilling: BS 4504 PN10/PN16, Flange Drilling: DIN 2501 PN10/PN16, ISO 15848 (fugitive emissions packing), API 622 (fugitive emissions packing)

End connection

clamp, flange, lug

Face-to-face

API 609, MSS SP-67, DIN3202, BS EN558-1

Operating temperature

-196℃～300℃

Available sizes

Standard DN sizes covered by this product. Confirmed at quote.

Available pressure classes

Pressure classes this product is rated to.

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

Size

DN250 (10")DN300 (12")DN350 (14")DN400 (16")DN450 (18")DN500 (20")DN600 (24")DN700 (28")DN800 (32")DN900 (36")DN1000 (40")DN1200 (48")DN1400DN1600DN1800DN2000DN2200DN2400DN2600DN2800DN3000DN3200DN3400DN3600DN3800DN4000

Pressure

PN10PN16PN25PN40

End connection

Wafer/clampFlanged ANSI B16.1 / BS 4504 / DIN 2501 PN10/PN16 / Class 125Lug

Materials

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

body

WCBA351 Gr CF8A351 Gr CF8MA351 Gr CF3M

disc

A351 Gr CF8A351 Gr CF8MA351 Gr CF3M

seat

PTFERPTFE

stem

A182 F304A182 F316A564 Gr.630A479 Gr.XM-19

bushing

PTFE+316SS

gland packing

PTFERPTFE

pin

A240 Gr.316

retainer

A351 Gr CF8A351 Gr CF8MA351 Gr CF3M

seal

PTFE

Operating media

Actuation options

Features

• Double eccentric structure design
• Lip sealing structure achieves two-way bubble-level zero leakage under elastic interference and self-sealing
• Interchangeable PTFE seats compatible with a variety of working conditions
• Anti-blowout stem design
• Low-leakage carbon fibre bowl-type combined packing structure available for fugitive emission service, meeting ISO 15848 and API 622
• Tangential stem pin is half in the disc and half in the stem; tangential positioning transfers squeeze force rather than shear stress to the connection
• ISO 5211 top flange for mounting pneumatic, electric, and gas-liquid linkage actuators
• Double-flanged butterfly valve with worm gear (handwheel) actuator
• Visible disc with metallic seat ring retained by bolts around disc periphery
• Blue epoxy-coated ductile iron body construction apparent
• Flanged end connections with visible bolt holes on both flanges

Description

High-performance Bufferfly Valve Specification Size：NPS 2”～48”/DN50～DN4000 Pressure: 150LB～300LB/PN10～PN50； Matrial：Carbon steel, heat-resistant steel, stainless steel, nickel-based alloy, titanium alloy, etc. Temperature range: -196℃～300℃； Connection method: clamp, flange, lug, etcDesign: API 609, MSS SP-67 Face To Face: API 609, MSS SP-67, DIN3202, BS EN558-1 Pressure Test: API 598 Flange Drilling: ANSI B16.1 class125, BS4504 PN10/PN16, DIN2501 PN10/PN16 Top Flange: ISO5211 Application: petroleum, petrochemical, natural gas, electric power, water conservancy and other industries. Main Parts Material: Body Carbon Steel WCB Carbon Steel A351 Gr CF8 CF8M CF3M Disc Carbon Steel A351 Gr CF8 CF8M CF3M Retainer Carbon Steel A351 Gr CF8 CF8M CF3M Seat PTFE PTFE+CLASS FIRER PTFE+GRARHITE PTFE /RP