Abstract: An adjustable lattice girder includes a first lattice girder portion having a first end and a second end positioned opposite the first end, with the first lattice girder portion having a first connection member, and a second lattice girder portion having a first end and a second end positioned opposite the first end, with the second lattice girder portion having a second connection member configured to engage the first connection member. The first connection member is slidable relative to the second connection member between a first position corresponding to a first distance between the second end of the first lattice girder portion and the first end of the second lattice girder portion, and a second position corresponding to a second distance between the second end of the first lattice girder portion and the first end of the second lattice girder portion. The first distance different than the second distance.

Abstract: The present invention provides an apparatus, system and method for replacing seats utilizing a hydraulic pancake jack that may be utilized with a valve seat puller, which may include an air return system and or a spring return system.

Abstract: An adjustable lattice girder includes a first lattice girder portion having a first end and a second end positioned opposite the first end, with the first lattice girder portion having a first connection member, and a second lattice girder portion having a first end and a second end positioned opposite the first end, with the second lattice girder portion having a second connection member configured to engage the first connection member. The first connection member is slidable relative to the second connection member between a first position corresponding to a first distance between the second end of the first lattice girder portion and the first end of the second lattice girder portion, and a second position corresponding to a second distance between the second end of the first lattice girder portion and the first end of the second lattice girder portion. The first distance different than the second distance.

Abstract: A hole cutting apparatus for cutting a hole in a tubular structure, which includes a center shaft, a slide mount rotatably attached to the center shaft, a slide rail slidably attached to the slide mount; a cutter attachable to the slide rail so as to move with the slide rail, and a cutter height roller attached to the cutter. The cutter height roller is structured and arranged to maintain the cutter at a distance from a cutting surface of the tubular structure as the hole is cut.

Abstract: The present invention provides an apparatus, system and method for replacing seats utilizing J-shaped hooks on a puller shaft that may be compressed to pass through the seat and expand back to engage the seat from below for pulling upward and removal.

Abstract: The present invention provides an apparatus, system and method for replacing seats utilizing J-shaped hooks on a puller shaft that may be compressed to pass through the seat and expand back to engage the seat from below for pulling upward and removal.

Abstract: A hole cutting apparatus for cutting a hole in a tubular structure, which includes a center shaft, a slide mount rotatably attached to the center shaft, a slide rail slidably attached to the slide mount; a cutter attachable to the slide rail so as to move with the slide rail, and a cutter height roller attached to the cutter. The cutter height roller is structured and arranged to maintain the cutter at a distance from a cutting surface of the tubular structure as the hole is cut.

Abstract: The present invention provides an apparatus, system and method for replacing seats utilizing spring loaded J-shaped hooks on a puller shaft that may be compressed to pass through the seat and expand back to original form to engage the seat from below for pulling upward and removal.