Hand Lever Grooved Butterfly Valve

Hand Lever Grooved Butterfly Valve is a lightweight, quick-install, manual pipeline control valve specially designed for fire protection, water supply, drainage and general industrial piping systems. Featuring a grooved end connection and lever manual operation, this butterfly valve provides fast on-off control and reliable sealing performance for low and medium-pressure pipeline applications. Compared with traditional flanged butterfly valves, the grooved design eliminates complicated flange matching and welding procedures, greatly improving installation efficiency and reducing overall engineering costs. It has become one of the most commonly used valve types for modular pipeline construction, renovation and compact space installation scenarios.

The valve adopts a wafer-type or lug-type butterfly structure with a streamlined disc design. The precision-molded rubber sealing liner closely fits the valve disc, achieving bidirectional zero leakage sealing. The integrated hand lever allows flexible opening, closing and angle adjustment, enabling workers to quickly switch the valve state on site without any auxiliary tools. The lever is equipped with a positioning self-locking function, which can fix the opening angle accurately to prevent accidental opening or closing caused by water hammer or medium pressure fluctuation, ensuring stable pipeline operation.

One of the core advantages of the grooved connection design is its high construction adaptability. The standard grooved ends can be perfectly matched with fire pipe grooved fittings, allowing rapid assembly and disassembly. This structure does not require professional welding equipment or high-precision flange alignment, which significantly shortens construction cycles, lowers technical requirements for installation personnel, and facilitates later pipeline maintenance, replacement and system debugging. The overall valve body is compact in structure, small in size and light in weight, making it especially suitable for narrow pipe wells, ceiling concealed installation and intensive pipeline layout environments.

In terms of material and durability, the valve body is made of high-strength ductile iron with anti-rust epoxy resin coating on the surface, which provides excellent corrosion resistance, oxidation resistance and water rust resistance. The valve disc adopts stainless steel material, which effectively avoids rust and scale adhesion, ensuring smooth medium flow and long-term sealing stability. The sealing ring is made of high-quality EPDM rubber, which features excellent aging resistance, high elasticity and wear resistance. It can maintain stable sealing performance for a long time under normal temperature water, weak acid and weak alkali media, and is not easy to deform or age even after frequent switching.

This manual grooved butterfly valve is mainly applicable to nominal pressure PN10 and PN16, covering most conventional civil and industrial water pipeline working conditions. It can be widely used in fire protection water supply systems, municipal water supply and drainage, HVAC air conditioning water systems, factory circulating water pipelines, building water supply and secondary water supply projects. With flexible manual operation, reliable bidirectional sealing, convenient installation and low maintenance rate, it fully meets the requirements of modern pipeline systems for safety, efficiency and economy.

In summary, the Hand Lever Grooved Butterfly Valve combines simple operation, superior sealing performance and highly efficient installation structure. It is a cost-effective, stable and durable pipeline control product, serving as the preferred valve for rapid construction and daily safety control of water pipeline systems in construction, municipal and industrial fields.