Double Block & Bleed Valve Tri-Block series / ANSI 150 ~ 300, Size 3” ~ 48”

Type : Triple Offset
Pressure : ANSI 150 ~ 300
Temperature : - 150 ~ 425 C
Size : 3” ~ 48”
Connection : Flange
Body : Carbon & Stainless Steel
Disc : Laminated Seal
Seat : Metal

Zwick Tri-Block series Double Block & Bleed Valve is assurance of Zero leak in condition where safety is concerned.
https://zwick-gmbh.de/en/tri-block-double-block-and-bleed/