Delayed coker isolation valve systems

Abstract From the Canadian patent

The present invention provides more efficient cost effective coke drum , isolation valve devices and system as well as more efficient cost effective , methods for isolating the flow of matter from location to another in the delayed coker unit operation where the valve comprises a first seat; a second seat aligned with said first seat; a blind; a main body having an orifice dimensioned to align with an orifice in said line; wherein said main body is coupled to said line; an upper and lower bonnet coupled to said main body wherein said bonnets may be removed in order to replace valve parts without separating the main body from the line; and a plate located inside a bonnet wherein the …