Triple Eccentric Lug Butterfly Valve

Name: Triple Eccentric Lug Butterfly Valve
Brand: Euro Flow Control
SKU: EFC-314
Availability: InStock

Debug · supplier source (internal only)

Supplier product page ↗EFC datasheet PDF ↗supplier: watts · ref: 314

Specifications

Confirmed at quote

Size Range: DN50-DN600
Pressure Class: Class 150/PN16
Standards: API 609, EN 593, ISO 5752, ASME B16.34
End connection: Lug type
Operating temperature: -196°C to +600°C

Available sizes

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

DN50 DN65 DN80 DN100 DN125 DN150 DN200 DN250 DN300 DN350 DN400 DN450 DN500 DN600

Available pressure classes

Pressure classes this product is rated to.

PN16 Class 150

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

Size
End connection

Materials

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

body
disc
stem
bushing
packing
bolt
connecting support
disc flange
packing flange
pon
sealing ring
stud
washers

Dimensions per size(14 sizes)

Size	L	D1	n-M	Weight
DN50	43 mm	125 mm	4-M16 null	—
DN65	46 mm	145 mm	4-M16 null	—
DN80	64 mm	160 mm	8-M16 null	—
DN100	64 mm	180 mm	8-M16 null	—
DN125	70 mm	210 mm	8-M16 null	—
DN150	76 mm	240 mm	8-M20 null	—
DN200	89 mm	295 mm	12-M20 null	—
DN250	114 mm	355 mm	12-M24 null	—
DN300	114 mm	410 mm	12-M24 null	—
DN350	127 mm	470 mm	16-M24 null	—
DN400	140 mm	525 mm	16-M27 null	—
DN450	152 mm	585 mm	20-M27 null	—
DN500	152 mm	650 mm	20-M30 null	—
DN600	154 mm	770 mm	20-M33 null	—

Operating media

Crude OilNatural Gas

Actuation options

manual levermanual gearboxpneumatic actuatorelectric actuatorhydraulic actuator

Approvals

Lloyd's Register (LR) type approvalECM – Ente Certificazione MacchineISOEAC (Eurasian Conformity)CEBureau VeritasACS – Attestation de Conformité SanitaireWRAS Approved Product

Features

Triple offset geometry providing metal-to-metal sealing
Lug-style body for end-of-line service capability
Zero-leakage shut-off performance
Low torque operation
Reduced maintenance due to minimal disc-seat contact during operation
Triple-offset (triple eccentric) disc geometry visible in sectional diagram
Lug-type body with threaded lug holes for dead-end service
Multi-level seal packing collar between disc and body (shown in detail callout A)
Clamp retaining the seat/seal assembly
Gearbox (worm-gear) actuator option
Pneumatic actuator option (double-acting cylinder visible in images 0 and 3)
Handwheel actuator option
Part numbering on sectional diagram: items 1–12 identified (full legend not fully legible)
Dimension references on drawing: L (face-to-face), DN (nominal bore), D1 (disc/seat diameter), n-M (bolt hole pattern)

Notes

Available in multiple sizes and material options to match application needs.
Products hold up to 10 international authoritative certification certificates.
Complies with international standards such as API, EN, and ASME.
Diagram: Sectional assembly drawing (image 7) showing front elevation, side cross-section, and detail A (seal area enlargement). Labels identify: item 1 – handwheel/gearbox; items 2–12 – internal components including stem, gland, packing, body, disc; detail A shows multi-level seal packing collar, clamp, disc, and body interface. Key dimensions indicated: L (face-to-face length), DN (nominal bore), D1 (bore/disc circle), n-M (number and size of lug tapped holes).

Description

A triple eccentric (triple offset) lug-style butterfly valve designed for demanding industrial shut-off service. Features metal-to-metal sealing geometry with a lug-type body for secure mounting between pipeline flanges, including end-of-line service. Available in a wide range of body materials and multiple sizes for high-pressure and high-temperature applications.