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LUG Butterfly Valve

Lug Butterfly Valve Manufacturer

Our Lug Type Butterfly Valves are engineered for applications requiring secure connection and the ability to perform end-of-line service. Unlike wafer types, the lug body features threaded inserts (lugs) that allow the valve to be bolted directly to the pipe flanges.

Technical Specifications

Size Range

DN40 – DN1200 (1.5" – 48")

Pressure Rating

PN10, PN16, PN25, Class 150/300

Body Materials

Ductile Iron (GGG40/50), Cast Steel (WCB), Stainless Steel (CF8/CF8M)

Disc Materials

SS304, SS316, Al-Bronze, Nylon Coated DI, Duplex Steel

Temperature Range

$-20°C$ to $+200°C$ (Depending on seat and seal material)

End Connections

Compatible with ASME B16.5, EN1092, JIS B2220, and AS2129

Product Types

Category	Type	Key Features / Materials
Sealing Design	Resilient Seated	EPDM, NBR, or Viton seats; Zero-leakage for water and general chemicals.
Sealing Design	Metal Seated	Stainless steel or hard alloy; Ideal for high-temperature and high-pressure steam.
Offset Design	Concentric	Cost-effective; Suitable for low-pressure and general utility services.
Offset Design	Double/Triple Offset	High-performance; Frictionless closure for severe service and high-cycle automation.
Actuation	Manual	Hand lever or heavy-duty worm gear operators.
Actuation	Automated	Pneumatic (DA/SR), Electric (ON-OFF/Modulating), or Hydraulic.

Typical Applications

The versatility and safety of Lug Type Butterfly Valves make them the preferred choice for:

Water & Wastewater

Pump stations, desalination plants, and isolation of filtration units.

Chemical Processing

Transport of corrosive media and tank farm management.

HVAC Systems

Chiller isolation, cooling towers, and condenser water control.

Quality Control & Testing

We prioritize system safety through a rigorous Zero-Defect quality protocol:

Pressure Testing

100% of valves undergo shell and seat pressure tests according to API 598 or EN12266-1 standards.

Material Traceability

PMI (Positive Material Identification) testing ensures all alloys match the specified chemical composition.

Cycle Life Testing

Critical components are subjected to endurance testing to ensure performance over thousands of operations.

Torque Verification

Every valve is tested for opening/closing torque to ensure seamless integration with actuators.

Certifications & Standards

Our manufacturing processes comply with the highest international industrial benchmarks:

01/

Design Standards: API 609, EN 593, MSS SP-67

02/

Face-to-Face Dimensions: API 609, ISO 5752, EN 558

03/

Quality Management: ISO 9001:2015 Certified

04/

Compliance: CE/PED (2014/68/EU), WRAS (for potable water), API 607 (Fire-safe design available)

FAQ

Q: What is the main advantage of a Lug valve over a Wafer valve?

A: The Lug design allows for dead-end service. Because the valve is bolted directly to the flange, you can remove piping from one side of the valve while the other side remains under pressure. A Wafer valve requires pressure from both flanges to stay in place.

Q: Do you support small batch orders or MOQs for new buyers?

A: We understand the needs of industrial procurement. While we specialize in bulk B2B supply, we offer flexible MOQs for standard specifications to support your initial project phases.

Q: Can you provide customized branding (OEM)?

A: Yes. We offer comprehensive OEM services, including custom casting of logos on the valve body, specialized nameplates, and custom coating colors to match your brand or project requirements.

Q: How do you ensure the valves won't leak during long-distance shipping?

A: All valves are securely packed in seawater-resistant wooden cases or reinforced pallets. Exposed flange faces and lugs are protected with plastic covers to prevent mechanical damage or corrosion during transit.

We're well-known as one of the leading lug butterfly valve manufacturers and suppliers in China. With abundant experience, we warmly welcome you to buy bulk advanced lug butterfly valve from our factory. If you have any enquiry about cooperation, please feel free to email us.

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