Lug Type Butterfly Valve China Factory and Suppliers Industrial Flow Control

Lug Type Butterfly Valve China Factory and Suppliers Industrial Flow Control

Leading China factory and suppliers of Lug Type Butterfly Valves. Design and manufacture per EN 593, BS 5155, and MSS SP-67. Flange dimensions EN 1092-2, BS 4504, ASME B16.1. Top flange ISO 5211, size up to 48 inches. API 598 and EN12266 tested for zero leakage.



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The Lug Type Butterfly Valve is a high-performance flow control solution engineered for precision, durability, and versatility in industrial piping systems. Designed to meet rigorous international standards including EN 593, BS 5155, and MSS SP-67, this valve provides a compact yet powerful mechanism for regulating or isolating the flow of various media with minimal pressure drop.

Featuring a robust construction with available materials ranging from Ductile Iron to Stainless Steel, these valves are optimized for wide-ranging applications. With size options extending up to 48", the Lug Type Butterfly Valve ensures seamless integration into existing infrastructures while providing superior sealing performance through high-quality NBR, EPDM, or PTFE seats.

Detailed Parameters

Design StandardsEN 593 / BS 5155 / MSS SP-67 Flange DimensionsEN 1092-2 / BS 4504 / ASME B16.1
Top FlangeISO 5211 Face-to-FaceEN 558 / ISO 5752 / DIN 3202
Test & InspectionAPI 598 / EN12266 Max SizeUp to 48"
Body MaterialCast Iron / Ductile Iron Disc MaterialDuctile Iron / Al Bronze / Stainless Steel
Seat MaterialsNBR / EPDM / PTFE Stem & PinStainless Steel

Key Advantages

Industrial Durability

Constructed from premium Cast or Ductile Iron to withstand high-pressure environments and corrosive industrial media.

Long Service Life

Stainless steel stems and pins ensure wear resistance and long-term operational stability under frequent cycling.

Global Standardization

Fully compliant with ISO, API, and EN standards, ensuring easy replacement and global compatibility.

Versatile Sealing

Choice of NBR, EPDM, or PTFE seats allows for customization based on temperature and chemical compatibility.

Compact Design

The Lug type configuration allows for dead-end service and minimizes space requirements in dense piping layouts.

Low Maintenance

Simplified design with high-quality bushings (PTFE/Al Bronze) reduces friction and maintenance intervals.

Product Gallery

Lug Type Butterfly Valve China Factory and Suppliers Industrial Flow Control
Lug Type Butterfly Valve China Factory and Suppliers Industrial Flow Control

Management Platforms

Inventory Control

Real-time tracking of valve sizes from DN40 up to DN1200 for rapid dispatch.

Quality Assurance

Rigorous testing per API 598 and EN12266 to ensure zero-leakage performance.

Custom Engineering

Tailored material selection (Al Bronze/Stainless) based on specific fluid chemistry.

Logistics Hub

Efficient global shipping coordination for large-scale industrial infrastructure projects.

Technical Support

Comprehensive documentation and installation guidance for all flange standards.

Compliance Audit

Full traceability of material certifications for body, disc, and stem components.

Investment Return Comparison

Evaluation MetricStandard Butterfly ValveOur Lug Type Valve
Installation CostModerateLower (Compact Design)
Maintenance CycleFrequentExtended (Premium Materials)
Sealing ReliabilityStandardSuperior (Multi-Material Seats)
Operational Life3-5 Years8-12 Years
Overall ROIBaselineHigh (Low Total Cost of Ownership)

Frequently Asked Questions

Q: What is the primary difference between Lug and Wafer butterfly valves?

Lug type valves have threaded inserts (lugs) that allow them to be bolted directly to the pipe flange, enabling them to be used for end-of-line service where one side of the piping can be removed without disturbing the valve.

Q: Which seat material should I choose for high-temperature applications?

For high-temperature or chemically aggressive environments, PTFE is the recommended seat material due to its superior thermal stability and chemical inertness compared to NBR or EPDM.

Q: Does this valve comply with ASME standards?

Yes, our Lug Type Butterfly Valves are manufactured to meet ASME B16.1 flange dimensions and follow API 598 inspection and testing standards.

Q: What are the maximum size options available for this series?

We provide a wide range of sizes starting from DN40 up to a maximum of 48 inches to accommodate various industrial flow requirements.

Q: Can the valve be operated automatically?

Yes, because our valves feature a top flange designed to ISO 5211, they can be easily equipped with pneumatic or electric actuators for automated control.

Q: How do I prevent corrosion in seawater applications?

For seawater or highly corrosive environments, we recommend selecting Stainless Steel or Aluminum Bronze for the disc and stem, paired with an EPDM seat.

Ready to Optimize Your Flow Control System?

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