Lever Flanged Butterfly Valve

The Lever Flanged Butterfly Valve is designed for pipeline systems requiring stable flange connection, quick manual operation, and reliable shut-off control. With a durable valve body, standardized flange structure, and easy-to-operate lever mechanism, it provides an efficient solution for customers who need simple operation and convenient maintenance.

Flange Connection Performance

Stable Pipeline Installation

The flange connection design provides strong mechanical support between the valve and pipeline, making it suitable for industrial projects requiring accurate installation and long-term operating stability.

Compared with wafer connection valves, the flanged structure offers better positioning during installation and easier removal during pipeline inspection or maintenance. This makes it widely used in fixed pipeline systems where connection reliability is a priority.

Multiple Standard Options

LIANGFA supports different flange standards according to project requirements, including common international connection standards.

The standardized flange design improves compatibility with existing pipeline systems and helps customers reduce installation difficulties during equipment replacement or system expansion.

Manual Operation Advantages

Fast Opening and Closing

The lever handle provides direct manual control with a simple 90° rotation operation. Without requiring electricity or compressed air, the valve can be quickly opened or closed on site.

This operation method is especially suitable for applications requiring frequent manual adjustment, emergency shut-off, or convenient field maintenance.

Easy Position Identification

The handle position indicator allows operators to quickly confirm valve status during operation.

Compared with complex actuator systems, the manual lever structure reduces maintenance requirements and provides a practical solution for standard pipeline control applications.

Sealing Performance for Different Media

Water and General Fluid Applications

For water supply, HVAC circulation, and wastewater systems, EPDM sealing materials provide excellent resistance to water, aging, and temperature changes.

The soft sealing design helps maintain reliable shut-off performance and reduces leakage risks during long-term operation.

Industrial Medium Applications

For oil, gas, and industrial fluid systems, LIANGFA provides suitable sealing and material options based on medium characteristics.

Selecting the correct sealing material according to temperature, pressure, and chemical compatibility helps improve valve service life and operational reliability.

Installation and Maintenance Benefits

Convenient Pipeline Maintenance

The flanged design allows easier valve removal and replacement during pipeline maintenance.

For projects requiring regular inspection or equipment upgrades, the connection structure helps reduce maintenance time and improves overall service efficiency.

Reduced Operation Costs

The simple lever mechanism requires no additional power source and has fewer moving components compared with automated valve systems.

This helps reduce installation costs and long-term maintenance expenses, especially in manually operated pipeline networks.

Application Areas

Municipal Water Systems

The Lever Flanged Butterfly Valve is widely used in municipal water supply, drainage networks, and wastewater treatment facilities.

The stable flange connection and reliable sealing structure help maintain continuous pipeline operation in water management projects.

HVAC and Building Services

In heating, ventilation, and air conditioning systems, the valve provides convenient flow isolation and adjustment.

The manual lever design allows maintenance personnel to quickly control water circulation during system installation, testing, and repair.

Industrial Pipeline Systems

The valve is suitable for manufacturing plants, process pipelines, and general industrial fluid transportation systems.

With different sealing and material options, LIANGFA can provide solutions for various operating conditions.

Product Drawing

Technical Performance Data

Flow Capacity

The Lever Flanged Butterfly Valve adopts an optimized disc design to improve fluid passage efficiency and reduce pressure loss.

Actual flow performance may vary depending on valve size, pressure rating, medium characteristics, and installation conditions.

Operating Torque

The lever mechanism provides direct manual operation with stable torque performance.

Actual torque requirements depend on differential pressure, sealing material, temperature, and pipeline conditions.

Product Comparison

For projects requiring stable connection, easy maintenance, and fast manual operation, the flanged butterfly valve provides a practical and reliable solution.

LIANGFA Quality Assurance

Certified Manufacturing Process

LIANGFA follows strict manufacturing procedures based on GB/T19001-2016 / ISO9001:2015 quality management standards.

Each valve undergoes professional inspection before shipment, including pressure testing, sealing performance checking, appearance inspection, and operation verification.

Customized Valve Solutions

LIANGFA provides customized solutions according to pipeline size, flange standards, pressure requirements, sealing materials, and application conditions.

Professional technical support helps customers select suitable valve configurations for different projects.

Warranty and After-Sales Service

LIANGFA provides a 12-month warranty from the shipment date.

During the warranty period, customers can receive technical support and solutions for manufacturing-related quality issues.

LIANGFA also supplies long-term spare parts including sealing components, valve discs, and related accessories to support continuous operation and reduce maintenance downtime.

Factory Tour

Product Packing & Shipping

We provide delivery services covering sea freight and land transport, with cargo available for shipment to all major ports worldwide.

Typical Project Example

In a municipal water supply renovation project, LIANGFA supplied D341X-16Q valves with ductile iron bodies, EPDM sealing seats, and lever operation systems.

The flanged connection structure improved installation stability during pipeline replacement, while the manual lever design allowed operators to quickly control water flow during maintenance.

The solution helped improve pipeline reliability and reduce maintenance time in the upgraded municipal water system.

Frequently Asked Questions

Why choose a flanged butterfly valve?

A flanged butterfly valve provides stronger pipeline connection support and easier maintenance compared with compact connection designs. It is suitable for fixed industrial pipelines requiring reliable installation.

What are the advantages of lever operation?

The lever handle allows quick manual opening and closing without external power. It is suitable for applications requiring simple operation and fast field control.

Can LIANGFA customize the valve?

Yes. LIANGFA can provide customized solutions including flange standards, valve materials, sealing options, pressure ratings, and other configurations according to customer requirements.