Worm Gear Grooved Butterfly Valve

This valve is manufactured in China and fully compliant with Chinese national fire safety standards. It has passed rigorous quality and safety testing, including CCCF (China Compulsory Certification for Fire Products), ensuring reliable performance and long service life. While it is certified for the Chinese domestic market, it meets international design and quality specifications and can be used in many projects worldwide where local certification is not mandatory.

Components and Materials List of Lever Grooved Butterfly Valve

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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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Gear Operated Grooved Butterfly Valve(D381X-16Q)

• Labor-Saving Operation & Low Operating Torque – The D381X-16Q worm gear operated grooved signal butterfly valve adopts a worm gear transmission structure, which effectively reduces operating torque. It realizes smooth, stable opening and closing with low manpower, making this resilient seated grooved butterfly valve highly suitable for frequent on-off operation and large-diameter pipeline working conditions in fire protection, plumbing and industrial pipeline systems.

• Compact & Lightweight Integrated Structure – This grooved gear signal butterfly valve features a simplified, compact body structure with a short face-to-face dimension and light overall weight. It occupies less installation space and adapts well to limited ceiling and pipe gallery environments, serving as an ideal pipeline accessory for large-diameter grooved piping in HVAC, water supply and fire fighting pipe networks.

• Excellent Medium Adaptability with No Residue Buildup – The worm gear operated grooved signal butterfly valve operates stably with clean fire water, purified water, and conventional cold and hot water media. The streamlined valve cavity avoids internal fluid accumulation and dead corners, perfectly matching the working conditions of building fire sprinkler systems, municipal domestic water supply and HVAC circulating water pipelines.

• Reliable Low-Pressure Resilient Sealing Performance – Equipped with high-quality EPDM polymer resilient seat, this grooved signal butterfly valve maintains tight, zero-leak sealing performance under low-pressure working conditions. It provides long-term stable sealing for cold and hot water industrial piping, fire sprinkler pipe networks and building fire protection pipeline installations

• Stable Flow Throttling & Reliable Shut-off – Different from lever-type valves, the worm gear structure enables stepless opening adjustment. The D381X grooved butterfly valve supports reliable tight shut-off and simple flow throttling (not precise regulation), meeting conventional pipeline flow control demands for municipal water supply, fire service engineering and building construction projects.

• Large Effective Flow Area & Low Flow Resistance – When fully open, the optimized concentric disc design provides a maximum effective flow area with minimal fluid resistance. It greatly improves water delivery efficiency and ensures stable pipeline operation for fire protection grooved piping systems (non-full-bore design, compliant with butterfly valve industry characteristics)

• Hydraulically Optimized Streamlined Disc – The valve disc adopts a streamlined hydrodynamic structure, which effectively reduces fluid turbulence and flow impact during operation. This balanced force structure further lowers operating torque, reduces component wear, and extends the service life under long-term, high-frequency switching cycles

• Durable & Anti-Aging Sealing System – The sealing surface is made of premium elastic rubber and polymer materials with excellent anti-aging and wear-resistant properties. It maintains stable low-pressure tightness and sealing reliability for a long time, adapting to long-cycle operation of fire suppression piping and domestic water supply pipeline systems

• Fast & Convenient Groove Installation – Designed with standard grooved end connection, this fire signal butterfly valve supports fast, welding-free on-site assembly and disassembly. It saves construction time and labor costs, and is widely applicable to building fire sprinkler pipelines, fire hydrant branch pipelines and complete grooved fire protection piping systems.

• Accurate Positioning & Real-Time Signal Feedback – The worm gear mechanism features precise opening and closing positioning with self-locking function to prevent accidental rotation. Matched with high-sensitivity micro signal switches, it can feed back the valve’s fully open/fully closed status to the fire control system in real time, meeting the intelligent monitoring requirements of building fire protection pipeline projects.

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.

We own a modern factory, sophisticated manufacturing, processing and testing equipment, as well as strong technical strength. Our factory employs skilled technicians and operators, with a total staff of 100 people. Our products have passed ISO 9001:2015 and CE certifications.

Our main 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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