Abstract: An assembly for moving a pair of flowline members relative to each other has a pair of flowline collars that are adapted to connect to an end portion of one of the pair of flowline members. The assembly has an arm member with an end portion rotationally mounted to one of the flowline collars and a connecting member pivotally mounted to the other flowline collar. The connecting member is pivotally mounted to the arm member a distance away from the end portion of the arm member that is connected to the flowline collar, so that rotational movement of the arm member moves the flowline members relative to each other. The assembly can also have an incremental distance adjustor assembly which maintains an incremental change in the distance between the pair of flowline collars during a rotational movement of the arm member.

Abstract: A reciprocating pump assembly has a pump housing with a crankshaft. A plunger is connected to the crankshaft for pumping a fluid through a cylinder. The cylinder has a fluid inlet port and an opening that provides access to the cylinder. A suction cover is mounted in the opening and has a hub that is coaxial with an axis of the suction cover. A suction valve stop is mounted adjacent one of the fluid ports and has a spring retainer. A column extends from the spring retainer, and a bushing is mounted to the spring retainer for engaging and being retained by the hub of the suction cover. The suction cover guides the suction valve stop in operation and, when the suction cover is removed from the opening, the suction valve stop is removable.

Abstract: A flowline connection assembly connects first and second tubular members to each other. Each tubular member has an external flange on its end. A conical recess is formed in the bore at the end of each of the tubular members. A metal ring has a pair of legs extending in opposite axial directions, each of the legs having a conical outer surface that engages one of the conical recesses. Each ring has an elastomeric seal that seals the recess. A clamp has cam surfaces that engage the flanges and pull the tubular members axially toward each other.

Abstract: A portable test compartment allows for on-site pressure testing of a workpiece at the site where the workpiece is utilized, instead of having to haul the workpiece to an off-site testing location. A test vehicle carries the elongated test compartment, and travels to the on-site location to test the workpiece. The vehicle has a lift assembly that pivotally connects the vehicle and the compartment. The lift assembly moves the compartment from a storage position alongside the vehicle to an operational position alongside the ground. The compartment has an interior portion that receives the workpiece. Inside the compartment, a safety blanket is fastened to the bottom of the compartment. The safety blanket envelops the workpiece by folding several portions of the blanket around the workpiece.

Abstract: A pressure relief valve has a housing fluidly connected to a pressurized system line carrying a system fluid. The housing carries a moveable piston and a valve member that both move between closed and open positions. The piston defines an upper chamber and a lower chamber within the housing. A pressurized fluid is supplied to the upper chamber to bias the piston toward the closed position. After the relief valve opens from excessive system pressure, the pressurized fluid is injected into the lower chamber to delay the return of the piston to the closed position. Initially, the fluid in the lower chamber flows through a check valve while the piston returns to the closed position. Then the fluid vent in the lower chamber vents from the lower chamber as the piston and valve member approach the closed position.