
Pneumatic Soft Sealing Butterfly Valve. High Performance Soft Seat: Rubber content 50%, switch life over 30,000 times, better sealing than hard seats. Anti-Blow-Off Shaft Design: No-pin structure allows handle change under pressure with 4 oil-free bearings. Durable Ductile Iron Handle: Superior strength and corrosion resistance compared to stamped handles. Comprehensive Pressure Testing: All products undergo pressure tests with reports provided before factory shipment. Wide Customization Options: Customizable body, disc, seat, and stem materials to meet specific needs. Robust Surface Coating: Epoxy powder coating offers strong adhesion and weather resistance for indoor/outdoor use. Multiple Material Standards: Available in Cast Iron, Ductile Iron, Carbon Steel, Stainless Steel, and Bronze. Extensive Size Range: Available sizes from DN40 (1.5 inch) up to DN1200 (48 inch).