DRAINAGE ASSEMBLY WITH UPWARD OPENING AND FLAT SEAT WITHOUT RETENTION AREAS FOR ENAMELLED CHEMICAL REACTOR

摘要

The invention relates to a drainage assembly of the type having an upward opening for the draining opening of a new or existing chemical reactor, particularly of the enamelled type, characterised in that the outer outlet opening (6) for the drainage is provided in the lower portion thereof with a removable seat part in the form of a planar annular seal (11) having an upper portion with at least one recess (21) used as a seat for the under-face of the head (10) of the valve and as a full flow ramp. The invention is particularly intended for the manufacturers and users of chemical reactors, in particular of the enamelled type.