Lug Concentric Butterfly Valve

Connection Type

Actuation Type

Lever, Gear, Pneumatic, Electric, Hydraulic

Lug Concentric Butterfly Valve is a compact, cost-effective flow control valve featuring a concentric disc design and integrated lug-style bolt holes. Ideal for mid-low pressure water, air, and neutral fluid systems, it enables quick on-off and basic throttling operations, with easy installation/removal without disconnecting pipeline flanges.

ZZJG's Advantages

Small in size and light in weight. Easy instlation and mintenance.
It can be mounted wherever nedded.
Siple and compact construction, quick 90 degrees on-off operation.Miniminzed operating torque, energy saving.
Flow curve tending to straight line.
Excellent regulation performance.
Long service life, Standing the test of tens of thousands opening/closing operations.
GBubbles-tight sealing with no leakage under the pressure test.
Wide selection of materials, applicable for various mdeium.

Product Details

Spec	Detail
Size Range	DN50~1000mm (NPS2"~40")
Pressure Class	PN0.6~1.6MPa (Class150)
Matrial	Cast Iron, Ductile Iron, WCB, LCB, CF8, CF8M, CF3, CF3M, A890 4A
Standards	ANSI, API, CE, DIN, EAC, JIS, ISO, EN

Professional Quality

Various Types

ZZJG offers one of the most comprehensive butterfly valve product lines from a single manufacturer including triple-offset butterfly valves, double-offset butterfly valves, high performance butterfly valves etc.

Service Support

ZZJG range of aftermarket services encompasses valve repair, refurbishment, maintenance, custom engineering solutions, and genuine OEM spare parts to sustain optimal equipment performance well after installation.

Processing Ability

ZZJG employs advanced manufacturing technologies using state-of-the-art machinery and equipment to ensure our products perform in the most challenging environments.

Why ZZJG Butterfly Valves?

API 609 International Certification

Fully compliant with API 609 international standard, covering all structural types including double flange, lug, and wafer types, and has obtained global market access qualifications for the petroleum, chemical, and power industries. Class 150 ~ 2500 (PN20 ~ PN420), NPS2" ~ NPS200" (DN50 ~ DN6000), temperature range -40℃ ~ 600℃, zero-leakage, and fireproof with API 607.

Leading Eccentric Structure Design

Double and triple eccentric design, the valve shaft, valve seat, and pipeline centerline are precisely offset, significantly reducing friction and wear. Bidirectional zero-leakage pressure, with built-in anti-sludge and self-cleaning functions, suitable for harsh media such as sewage and slurry, and with a service life more than 3 times longer than conventional butterfly valves.

Reliable and Guaranteed Quality

Founded in 1981 and located in the valve capital of China, this company is a certified National High-Tech Enterprise with R&D investment exceeding 5%. Its 12-step full-process testing procedure, from material verification to finished product delivery, adheres to API 609 inspection standards to ensure zero-defect delivery.

Customized Services for All Conditions

Adaptable to all media including water, steam, oil, acids, alkalis, and gases, meeting the needs of core industries covered by API 609, such as petroleum, natural gas, chemical, and power. Specialized models are developed for different scenarios, such as fully welded, leak-free butterfly valves for heating pipelines and hydraulically controlled slow-closing check valves for hydropower stations.