A liquid chemical metering pump (24) is described that can be fully submerged
within a hazardous liquid chemical transport/storage container (28). The
pump (24) includes a discharge adaptor (30) that can be received
in the outlet aperture (40) of the container (28), in which it is
held in sealing relationship by a suitable screw-threaded connector. The discharge
adaptor (30) is provided with an intake port (32) in fluid communication
with the liquid chemical in the container (28), and a discharge port (34)
which is in fluid communication with a discharge tube (36) leading to a
flow stream (38). The chemical metering pump (24) is remotely controlled
by an electronic controller (26) connected by cable (25) to the chemical
metering pump. The chemical metering pump (24) substantially eliminates
the need for "double handling" of hazardous liquid chemical, as the chemical can
be metered directly from the transport/storage containers in which it is delivered
to the end user. The pump (24) can be readily modified to suit different
sized containers.