Butterfly Valve
Butterfly valves regulate flow via a quarter-turn disc in wafer, lug or flanged bodies from DN50 to DN2400. Ductile iron, SS304/316 or carbon steel with EPDM/NBR/PTFE/Viton seats deliver bubble-tight shutoff, low torque, minimal pressure drop and corrosion resistance. Manual lever, gearbox, pneumatic or electric actuation fits water, HVAC, chemical, marine and power lines under DIN/ANSI/JIS/EN.
Types and Selection
Wafer butterfly valves are compact and economical. They fit between two flanges and suit water, HVAC and general industrial lines, but the pipeline must be shut down before removal. Lug valves use threaded inserts so each side can be bolted independently, making them suitable for sectional maintenance and end-of-line service. Flanged valves provide stronger support for large diameters, higher pressures and heavy-duty installations.
Seat and Material Options
EPDM is commonly used for potable water, raw water and wastewater. NBR suits oil, fuel and compressed air. PTFE is selected for chemicals, acids, solvents and pharmaceutical processes, while FKM serves higher-temperature or demanding chemical duties. Metal seats are preferred for abrasive media and temperatures beyond elastomer limits.
Ductile iron offers an economical body for water service. SS304 or SS316 suits corrosive, hygienic and marine environments. Disc options include coated ductile iron, stainless steel and aluminium bronze. Manual lever, worm gear, electric, pneumatic and hydraulic operation are available.
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FAQ
1
Can a wafer valve be used at the end of a pipeline?
No. Use a lug or flanged valve for end-of-line service.
2
Which seat is suitable for potable water?
EPDM is the usual choice, subject to local approval requirements.
3
What sizes are available?
Depending on body type, butterfly valves are available from DN50 to DN2400.
4
What information is needed for a quotation?
Please provide size, connection type, pressure, medium, temperature, standard and actuation.
Veyron Valve (Tianjin) Co., Ltd. We offer a diverse product range, specializing in butterfly valves, gate valves, and check valves. Our butterfly valve comes in wafer, lug, and flanged types, plus we supply chain wheels, joints, stainers, and more.
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