Dimension & Technical Specification of Grooved End Butterfly Valve

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Core Advantages of Manual Lever Operated Grooved Butterfly Valve

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# Lever Operated Grooved End Fire Butterfly Valve (D81X-16Q)

Looking for a reliable **grooved end fire butterfly valve** for your piping systems? The **D81X-16Q manual lever grooved butterfly valve** is specifically engineered for fire protection, HVAC, and water supply applications. Below are the key features and specifications of this high-performance **resilient seated grooved valve**.

## Key Features of D81X-16Q Grooved Connection Butterfly Valve

1. Low Operating Torque & Quick 90° On/Off (Lever Operated)

Equipped with a concentric disc design, the fluid pressure acts evenly on both sides of the valve shaft to ensure low and balanced operating torque. The **hand lever operated butterfly valve** enables quick quarter-turn (90-degree) opening and closing, making it ideal for long-term, frequent switching.

*Note: This **grooved manual butterfly valve** supports simple throttling rather than precise flow regulation.*

2. Large Flow Passage & Minimal Medium Residue

The streamlined body of our **grooved end fire protection valve** features an unobstructed, wide flow path when fully open, greatly reducing fluid resistance and pressure drop. There are no dead zones inside the valve cavity, effectively preventing medium buildup.

*Note: Unlike ball valves, this **grooved utility valve** is not a full-bore valve.*

3. Compact & Lightweight Design for Grooved Piping Systems

Its short face-to-face dimension and light overall weight significantly save installation space and reduce structural load. This **compact grooved butterfly valve** is widely used for large-diameter grooved pipes in HVAC, industrial water supply, and municipal fire protection systems.

4. Reliable Zero-Leakage Sealing with EPDM Resilient Seat

The sealing surface of this **resilient seated grooved valve** adopts premium elastic polymer materials like EPDM rubber. It maintains a tight, bubble-tight seal (zero leakage) even under low pressure, making it perfectly suitable for hot and cold clean water, fire sprinkler networks, and domestic water pipelines.

5. Flame-Free Grooved Clamp Connection for Easy Installation

The **grooved ends** eliminate the need for welding or threading during on-site assembly, enabling time-saving, labor-efficient mounting, and hassle-free maintenance. It is a standard choice for fire mains, sprinkler branch pipes, and hydrant pipelines.

6. Interchangeable Actuator (Manual Lever to Automatic Control)

The standard ISO 5211 top flange design allows the **grooved valve body** to easily swap drive units. You can retrofit it with electric, pneumatic, or hydraulic actuators to meet diverse pipeline automation demands.

*Note: The standard **D81X-16Q lever-operated version** does not include automatic actuators unless specified.*

7. Wide Application in Mild Medium Pipeline Projects

Compatible with clean water and non-corrosive mild media, this **industrial grooved butterfly valve** is widely applied in municipal water supply, drainage, HVAC systems, fire suppression networks, and general low-pressure industrial piping.

Grooved Butterfly Valve CNC Machining Process | Jingda Valve Production

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JINGDA adopts CNC precision lathe for grooved butterfly valve body machining to ensure precise groove dimension for fire protection grooved pipe connection.

Surface Polishing & Deburring for Lever Grooved Butterfly Valve

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All QT450 cast valve bodies go through polishing process to remove burrs, improve corrosion resistance and sealing matching precision.

Hydrostatic Pressure Test & Leakage Inspection of Grooved Fire Butterfly Valve

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Every finished grooved lever butterfly valve undergoes 1.5PN hydrostatic pressure leakage test to meet CCCF fire valve standard requirements.

Complete Assembly Flow of Manual Grooved End Butterfly Valve

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Professional workers assemble disc, EPDM seat, stem and lever strictly following standard assembly procedure for long service life.

About Jingda Valve | Professional Grooved Butterfly Valve Manufacturer from China

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Botou Jingda Valve Co., Ltd. is a professional manufacturer specialized in producing high-quality valves. The company has advanced internal management standards and enjoys a high reputation in the casting industry with 15 years of production experience.

Our mainly products include butterfly valves, gate valves, ball valves, check valves, Y-type strainers, rubber joints, Pipe Fittings,etc.

With high-quality products and a complete service system, our products are exported to dozens of countries and regions, including Europe, America, Southeast Asia, the Middle East, Australia, North Africa, South Korea, Hong Kong and Taiwan, with an annual export volume of 10 million US dollars.

Company tenet: Professional technical support and perfect after-sales service!

Jingda Valve Official Certifications & Third-party Test Reports

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