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IRAS 19475+3119 is a quadrupolar pre-planetary nebula (PPN), with two bipolarlobes, one in the east-west (E-W) direction and one in the southeast-northwest(SE-NW) direction. We have observed it in CO J=2-1 with the Submillimeter Arrayat ~ 1" resolution. The E-W bipolar lobe is known to trace a bipolar outflowand it is detected at high velocity. The SE-NW bipolar lobe appears at lowvelocity, and could trace a bipolar outflow moving in the plane of the sky. Twocompact clumps are seen at low velocity around the common waist of the twobipolar lobes, spatially coincident with the two emission peaks in the NIR,tracing dense envelope material. They are found to trace the twolimb-brightened edges of a slowly expanding torus-like circumstellar envelopeproduced in the late AGB phase. This torus-like envelope originally could beeither a torus or a spherical shell, and it appears as it is now because of thetwo pairs of cavities along the two bipolar lobes. Thus, the envelope appearsto be disrupted by the two bipolar outflows in the PPN phase.

An Envelope Disrupted by a Quadrupolar Outflow in the Pre-Planetary Nebula IRAS19475+3119