Abstract: A filter vessel primarily for use in filtering a fluid passed through the vessel under pressure. The housing is provided by an upstanding, circumferential sidewall open at its upper end. The housing supports a reticulated basket for restraining and suspending a filter bag therein. A collar is mounted around the sidewall in the vicinity of the upper end and in cooperative arrangement with a sealing cap installed over and clearing the upper end to provide a discrete liquid flow path for fluid entering through an inlet port in the collar. The fluid path extends substantially uninterrupted from the inlet port, around the sidewall and over the upper end below the cap and, thereafter, into the filter bag over substantially the entire perimetric entrance to the basket.