Electric Flange Butterfly Valve

This electric flanged butterfly valve adopts RF raised face flange connection design. The valve body is cast from QT500-7 ductile iron, while the valve plate is wrapped with EPDM rubber lining. Paired with an electric actuator, it realizes automatic switch or flow regulation, widely applied in municipal water supply, sewage discharge, fire fighting and HVAC circulating water pipelines.

Integrally cast with high-strength QT500-7 spheroidal graphite iron, the valve body is coated with food-grade anti-corrosion epoxy paint inside and out. The EPDM rubber liner is vulcanized integrally on the disc, achieving reliable bidirectional zero-leakage sealing. Standard RF flange connection enables firm pipeline assembly and convenient later disassembly and maintenance.

The actuator is constructed from lightweight aluminum alloy. It supports basic on-off control as well as 4–20mA analog proportional regulation, compatible with AC220V, AC380V and DC24V power supplies. Adapted for clean water, sewage and other neutral media, the valve operates stably between -10℃ and 80℃, with PN10 and PN16 pressure classes for selection.

Power Generation Industry This valve is widely used in pipeline systems of thermal power plants, serving high-temperature steam, boiler flue gas, air supply and circulating water systems. It works reliably under long-term high temperature and high pressure, avoids leakage issues of soft seal parts, and ensures stable running of power generating equipment.

Petroleum & Petrochemical Industry It fits petrochemical production units, high-temperature heat conduction oil pipelines, as well as oil and gas transmission pipelines. Built with an all-metal hard seal structure, it stands up to corrosion and scouring from complex oil and gas media, and performs reliably for both shut-off and flow regulation.

Chemical Industry It works well for chemical pipelines carrying high-temperature acid, alkali and solvent liquids. Able to withstand high pressure and corrosive chemical working environments, it keeps sealing stable over time and cuts down your long-term maintenance costs.

Metallurgical Industry Metallurgical plants often use this valve for high-temperature flue gas exhaust, hot air circulation and industrial furnace piping. It resists abrasion from high-temperature gas and dust, opens and closes smoothly, and maintains reliable sealing for a long service life.

Every valve is individually wrapped in transparent plastic film to guard against dust buildup and moisture ingress. Afterwards, complete wrapping with pearl cotton and foam padding is applied to cushion shocks and vibration from external forces.

We utilize non-fumigated wooden cases that comply with international overseas shipping criteria. The internal cushioning structure is professionally engineered to withstand jolts and vibration encountered in combined land, sea and air transportation.

An integrated pallet base is fitted on the bottom of each wooden crate, allowing easy handling via forklifts and pallet jacks, which streamlines bulk loading, unloading and rack storage in warehouses.

This standardized packaging delivers comprehensive protection for the entire valve, particularly its precision sealing components. It prevents structural deformation and seal damage throughout shipment and storage, making it perfectly suited for long-distance, multi-segment logistics transport of industrial valves.

SND is a contemporary all-round valve manufacturer headquartered at Wu'an Industrial Park, Hebei Province. We integrate independent R&D, standardized production, global marketing and dedicated after-sales support within our complete business system. Drawing on more than two decades of profound expertise in fluid control, we focus on supplying high-quality valves and customized fluid control solutions to a broad spectrum of industries, such as petrochemical, power & energy, municipal water utilities, metallurgy, shipbuilding, pharmaceutical and food processing sectors.

Our comprehensive product lineup encompasses ball valves, gate valves, globe valves, butterfly valves, check valves, regulating valves and custom special valves. Fabricated from cast iron, cast steel, stainless steel, alloy steel and other alternative materials, these valves are engineered to cope with demanding working scenarios demanding heat resistance, pressure resistance, corrosion resistance and abrasion resistance. We leverage advanced CAD/CAE design platforms and high-precision CNC machining facilities to guarantee stable performance and uniform, reliable quality across all products.