DBB and DIB Valves
DBB (Double Block and Bleed): Two single piston-effect seats.

DIB-I (Double Isolation and Bleed Type I): Two double piston-effect seats.

DIB-II (Double Isolation and Bleed Type II): One double piston-effect seat and one single piston-effect seat.

Founded in 2013, Bosseal is a professional industrial valve manufacturer based in Suzhou, China. We specialize in the design and production of Ball Valves, Gate Valves, Globe Valves, Check Valves, Butterfly Valves, Plug Valves, and Piping Strainers. All our products are manufactured in strict compliance with international standards, including API, ASME, ISO, DIN, BS, and EN. With a strong focus on quality control and engineering capability, we are committed to providing reliable and high-performance valve solutions for global industrial applications.