Stainless Steel Butterfly Valves: Advantages & Applications in Industrial Piping

Introduction: The Lightweight Choice for Large-Diameter Piping
Stainless steel butterfly valves are valued for their compact size, light weight, rapid operation, and good throttling characteristics. In large-diameter (DN100+) water systems, ventilation systems, and mildly corrosive media piping, butterfly valves offer unique advantages — weighing only 1/3 to 1/5 of equivalent gate valves with 50%+ installation space savings. Wenqiang Stainless Steel supplies wafer, lug, and lined butterfly valves from DN50 to DN2000.

Butterfly Valve Types
Wafer Butterfly Valve: Clamped between two pipe flanges. PN10-PN16. Most lightweight and economical.
Lug (Flanged) Butterfly Valve: Bolted to both pipe flanges independently. PN10-PN25. Sturdier connection, allows dead-end service.
Lined Butterfly Valve (PTFE/FEP): For highly corrosive chemical media. PN10-PN16.
Metal-Seated Butterfly Valve: For high-temperature applications. PN10-PN40.

Wenqiang Butterfly Valve Range
Wenqiang provides butterfly valves from DN50 to DN2000, configurable with manual handwheel/lever, pneumatic (double-acting or spring-return), and electric (on-off or modulating) actuators. Compatible with major actuator brands including Rotork, Auma, and SMC.

Frequently Asked Questions
Q1: Can butterfly valves be used for flow control?
A: Yes. Butterfly valves provide good flow control characteristics (approximately equal percentage) with optimal regulation in the 30°-70° disc opening range. However, they are not suitable for applications requiring extremely low pressure drop.
Q2: Lined vs. all-stainless butterfly valve — which is more corrosion-resistant?
A: PTFE/FEP-lined butterfly valves resist virtually all chemical media (including aqua regia and HF) but are temperature-limited to ≤180°C. All-stainless 316L valves handle higher temperatures but have lower chemical resistance.
Q3: Can Wenqiang supply butterfly valves with actuators?
A: Yes. Wenqiang provides complete actuated assemblies with manual, pneumatic (double-acting/spring-return), and electric (on-off/modulating) configurations.

Contact Us
Wenqiang Stainless Steel butterfly valves — lightweight, efficient, ideal for large-bore piping. DN50-DN2000 full range. Inquiries: +86 577 8922 2595.