Butterfly Valve Design for the Oil & Gas Industry

Triple and double offset butterfly valve design

A 64 inch triple offset cryogenic butterfly valve. This was initially a concept design to see if it was feasible to produce such a large valve, before doing the full design and calculations. The built in lifting lugs doubled up as foot supports for … — A 64 inch triple offset cryogenic butterfly valve. This was initially a concept design to see if it was feasible to produce such a large valve, before doing the full design and calculations. The built in lifting lugs doubled up as foot supports for installation

An 8 inch triple offset cryogenic butterfly valve - this has a welded extension

An 8 inch triple offset double block and bleed. This consists of two valves in one body. These are becoming more popular as double isolation valves and can be a direct replacement for already existing gate valves

Double offset butterfly valve, featuring a double lip PTFE seal, and unique seat arrangement on the disc. This ensures bubble tight sealing in both directions. Both features have patents pending

Speciality valves. This is a double flanged short pattern with a steam jacket. The valve would be installed with the shaft horizontal with the drain at the bottom. This design would suit a long pattern valve just as well. One extra addition if requi… — Speciality valves. This is a double flanged short pattern with a steam jacket. The valve would be installed with the shaft horizontal with the drain at the bottom. This design would suit a long pattern valve just as well. One extra addition if required is a steam trace through the length of the shaft

Double block and bleed compact design. This offers true double block and bleed capability that will fit in place of a standard short pattern flanged valve, without any pipework modifications. Two sets of sealing elements in one body, fully field s… — Double block and bleed compact design. This offers true double block and bleed capability that will fit in place of a standard short pattern flanged valve, without any pipework modifications. Two sets of sealing elements in one body, fully field serviceable. The unique design uses special patented port technology to bleed the media from between the two sealing elements. All valve designs feature low sealing torque technology.

Solenoid ball valve with actuator. This is a fail closed type, which automatically closes if the power fails. For a special prototype assembly. Available in sizes from sizes ½” to 2” with operators in either fail close, fail open or double acting.

The work not only involved the initial concept design with all the calculation, but covered a full set of working drawings, PED and CE marking. The creation of PMA sheets and all the associated work that involves accreditation from Lloyd's