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What are the Types of Grooved Butterfly Valve?
2026-04-13
A fire fighting grooved butterfly valveis a center-line Butterfly Valve specially designed for fire water systems, whose most prominent feature is the adoption of grooved clamp connection. Through the standard grooves prefabricated at the end of the valve body, the valve can be quickly and firmly connected to grooved pipes using supporting clamps and rubber sealing rings. This design eliminates the traditional processes of welding, flange butt joint or thread tightening, realizing the rapid assembly and disassembly of the pipeline system.
Grooved pipe connection has been widely used in fluid transportation projects such as water supply and drainage, fire protection, and ventilation. The current grooved butterfly valves are integral type, that is, the valve body and the groove part are integrated. In fact, on the basis of the original flanged butterfly valve, the flange is replaced with a grooved clamp to adapt to the needs of grooved pipe connection. A Grooved end butterfly valve is generally composed of a valve body, a butterfly plate, a valve seat and a driving device (such as a handle or a worm gear box). A rotating shaft is provided on the butterfly plate, and the rotating shaft of the butterfly plate is installed in the rotating shaft hole of the valve column of the valve body. One end of the rotating shaft extends outward from the rotating shaft hole of the valve body, and the rotation of the butterfly plate is controlled by a driving device, thereby controlling the opening and closing of the butterfly valve. The clamp is a connecting device used to connect grooved pipe fittings, valves and pipeline accessories, and is mostly used to fasten the connection between quick connectors.
Core Advantages: Why Choose Grooved Butterfly Valves?
Grooved butterfly valves show significant advantages in both performance and construction, especially in ensuring the reliability of fire protection systems:
- Construction Efficiency and Safety: The installation speed is fast, which can save more than 70% of the installation time. More importantly, no open flame is required during the entire installation process, which completely eliminates the fire risk caused by welding at the construction site, making it safer and more environmentally friendly for renovation projects or under-construction projects.
- System Compatibility and Reliability: Grooved connection is a flexible connection, which can absorb a certain amount of pipeline vibration and noise, compensate for thermal expansion and contraction caused by temperature difference, and even overcome slight misalignment problems during pipeline connection. This ensures the long-term stable operation of the system under temperature changes and slight displacement.
- Sealing Performance and Service Life: The valve body adopts internal vulcanized rubber lining or the butterfly plate surface adopts integral rubber-coated vulcanization process. The material is usually EPDM (Ethylene Propylene Diene Monomer), which has excellent anti-aging, corrosion resistance and radiation resistance. It can achieve two-way bubble-level zero leakage sealing, ensuring that the valve can effectively cut off or conduct water flow in the event of a fire.
- Convenience of Maintenance: When the valve needs to be replaced or maintained, it can be removed from the pipeline by simply loosening the clamp bolts, without damaging the entire pipeline, which greatly shortens the maintenance downtime and reduces the maintenance cost.
Core Functions and Technical Standards
In the fire protection system, the grooved butterfly valve mainly undertakes two tasks:
- Cutting off and Regulating Medium: As the control hub of the pipeline, it cuts off or connects the water flow by rotating the butterfly plate 0° to 90°, and can perform sensitive flow regulation within a certain opening range.
- Signal Feedback: The fire signal butterfly valve adopts a worm gear transmission device to drive the butterfly plate to rotate to realize opening and closing. A micro switch is installed in the transmission device box, which can output electrical signals to the fire control center when the valve is fully open or closed, realizing remote monitoring and preventing the failure of the fire water pipe network caused by accidental closing of the valve.
| Technical Parameter | Specification |
|---|---|
| Maximum Operation Pressure | 300psi (2.1MPa) |
| Size | 2″-6″ (Lever Operated) / 2″-12″ (Gear Operated) |
| Temperature | -4℉ to 230℉ / -20℃ to 110℃ |
| End to end | MSS SP-67(2011) |
| End Construction | AWWA C606-15 |
Market Prospect
With its excellent comprehensive performance, fire fighting grooved butterfly valves are widely used in:
- Various fire water systems: including automatic sprinkler systems, fire hydrant systems, and water inlet and outlet pipelines of fire pump rooms.
- Other industrial and civil fields: It is also suitable for air conditioning water systems, process water systems, water supply and drainage systems that require frequent maintenance, and is also popular in occasions with high requirements for installation convenience such as mines and ships.
From the market perspective, the market prospect of fire fighting grooved butterfly valves is broad. In recent years, the fire valve market in China and even the world has maintained steady growth.
Technology Development Trend
Fire fighting grooved butterfly valves are developing towards intelligence and high performance. As an important part of the urban water supply system, in the future smart city and smart building safety, valves with more intelligent and advanced diagnostic functions will become the mainstream to realize remote status monitoring and automatic alarm.