Abstract: A pulsation dampening apparatus for providing a selectively variable orifice size for a reciprocating compressor system includes a rotatable conical cage and a fixed conical cage, the conical cages being aligned along a central axis to form a central cylindrical port. The conical cages each include at least one window or port and have mating contours allowing the conical cages to rotatably slide over one another, allowing their respective ports to be selectively aligned in any configuration to create any desired effective orifice size. In one embodiment, each of the conical cages include a plurality of ports which can be selectively aligned, the relative alignment of the ports determining the effective orifice size of the pulsation dampening apparatus.

Abstract: A pulsation dampening apparatus for providing a selectively variable orifice size fir a reciprocating compressor system includes a rotatable conical cage and a fixed conical cage, the conical cages being aligned along a central axis to firm a central cylindrical port. The conical cages each include at least one window or port and have mating contours allowing the conical cages to rotatably slide over one another, allowing their respective ports to be selectively aligned in any configuration to create any desired effective orifice size. In one embodiment, each of the conical cages include a plurality of ports which can be selectively aligned, the relative alignment of the ports determining the effective orifice size of the pulsation dampening apparatus.

Abstract: A pulsation dampening apparatus for providing a selectively variable orifice size fir a reciprocating compressor system includes a rotatable conical cage and a fixed conical cage, the conical cages being aligned along a central axis to firm a central cylindrical port. The conical cages each include at least one window or port and have mating contours allowing the conical cages to rotatably slide over one another, allowing their respective ports to be selectively aligned in any configuration to create any desired effective orifice size. In one embodiment, each of the conical cages include a plurality of ports which can be selectively aligned, the relative alignment of the ports determining the effective orifice size of the pulsation dampening apparatus.

Abstract: An apparatus for providing a selectively variable orifice size for pulsation control in a reciprocating compressor system includes a rotatable upper windowed plate and a fixed lower windowed plate, the windowed plates being aligned a long a central axis to form a central cylindrical port. The upper and lower windowed plates each include at least one plate port and have mating contours allowing the upper plate to rotatably slide over the fixed lower plate, allowing their respective ports to be selectively aligned in any configuration to create any desired orifice size for a pulsation control device. The shapes of the windowed plates can be flat, conical, or any combination thereof. In one embodiment, the upper and lower windowed plates each include a plurality of plate ports which can be selectively aligned, the relative alignment of the plurality of plate ports determining the effective orifice size of the pulsation control device.

Abstract: An apparatus for providing a selectively variable orifice size for pulsation control in a reciprocating compressor system includes a rotatable upper windowed plate and a fixed lower windowed plate, the windowed plates being aligned a long a central axis to form a central cylindrical port. The upper and lower windowed plates each include at least one plate port and have mating contours allowing the upper plate to rotatably slide over the fixed lower plate, allowing their respective ports to be selectively aligned in any configuration to create any desired orifice size for a pulsation control device. The shapes of the windowed plates can be flat, conical, or any combination thereof. In one embodiment, the upper and lower windowed plates each include a plurality of plate ports which can be selectively aligned, the relative alignment of the plurality of plate ports determining the effective orifice size of the pulsation control device.