The Pressure Balanced Lubricated Taper Twin Plug Valve (Type 55) provides true Double Block & Bleed (DBB) and Double Isolation & Bleed (DIB) capability in a compact, fire-safe design. Its twin plug, metal-to-metal sealing geometry delivers tight shutoff with low operating torque, while the pressure-balanced mechanism ensures smooth operation across a wide pressure range. A blowout-proof stem with three independent seals and an integrated cavity relief system enhance safety in critical oil & gas, petrochemical, and power applications. Designed in Venturi pattern with straightway rectangular reduced port, the valve offers dependable isolation with minimal pressure loss.