Butterfly Valve

Butterfly valve series covers manual, pneumatic, and electric actuation options, suitable for a wide range of scenarios from general industrial to sanitary and hazardous areas. Body materials include 304/316L stainless steel, ductile iron, and more. Sealing materials include PTFE, EPDM, FKM, etc., meeting corrosion resistance, high temperature resistance, and sanitary requirements. Products comply with EN, ASME, API, ATEX and other international standards, supporting wafer, lug, and clamp connections.

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Core Advantage

1.Multiple actuation types: Manual (handwheel/lever), pneumatic (double-acting / single-acting spring return), electric (explosion-proof / standard)
2.Excellent sealing performance: PTFE sealing provides chemical inertness and low friction, achieving ANSI Class VI bubble-tight seal
3.Wide temperature and pressure range: Temperature from -40°C to 260°C, pressure up to 1.6 MPa (Class 150 / PN16)
4.Explosion-proof options: Electric explosion-proof models comply with ATEX Ex d IIC T6 / NEC Class I Division 1, suitable for hazardous environments
5.Sanitary design: 316L stainless steel + dead-leg free polished surface, supports CIP/SIP online cleaning and sterilization
6.Easy installation and maintenance: Wafer/lug connections simplify installation; some models allow maintenance without pipeline disassembly
7.Strong corrosion resistance: 304/316L stainless steel with PTFE seals, resistant to acids, bases, organic solvents, and food-grade media
8.Automation integration: Supports remote control, real-time monitoring, and automatic operation with preset parameters

Application

Ideal for large-diameter, low-pressure drop water or gas lines, such as municipal water supply, wastewater treatment plants, and HVAC cooling water systems. In chemical, pharmaceutical, and food industries, corrosion-resistant or sanitary designs are available for media regulation and shut-off

Technical Parameters

Parameter	Range
Port Size	DN15 – DN1000 (0.6″ – 40″)
Pressure Rating	PN6 – PN16 (Class 150), max Δp 1.6 MPa
Temperature Range	-40°C to 260°C (depending on seal material)
Body Material	304 stainless steel, 316L stainless steel, ductile iron, carbon steel (with anti-corrosion coating), alloy steel
Disc Material	304/316L stainless steel, alloy steel
Seal Material	PTFE, EPDM, FKM (Viton), NBR
Connection Type	Wafer, lug (single flange), clamp, threaded
Actuation	Manual (handwheel/lever), pneumatic (double-acting/single-acting), electric (standard/explosion-proof)
Leakage Class	ANSI Class VI (bubble-tight)
Explosion-Proof Rating	ATEX Ex d IIC T6, NEC Class I Division 1
Design Standards	EN 593, ASME B16.34, API 598, ISO 5211, GB/T 12221