The present invention relates to a variable orifice device for modulating a clutch oil pressure of a power transmission. The device includes a body member having a pocket and a first and a second port. The pocket is open to one side of the body member with the first port connecting the pocket to an oil pump and the second port connecting the pocket to a modulator valve device. A plate member is arranged in the pocket and has a passage and a plurality of orifices. Each of the orifices has a different diameter. A selected one of the orifices communicates with the second port and the passage communicates with the first port. A cover member is arranged in the pocket and has a recess for connecting the passage to the selected one of the orifices.
