A high performance Compact C
Range progressing cavity (PC) pump
from NOV Mono has been installed
at Tower Bridge to handle rainwater
and the ingress of ground water from
the River Thames.

Tower Bridge, which uses a
progressing cavity pump in each of its
bridge legs for dewatering purposes,
requested a like for like replacement
from Mono after the previous Mono
PC pump had run smoothly for over
ten years.

David Duffy, technical officer at
Tower Bridge (City of London
Corporation), commented: “The
Mono pumps transfer ground water
to the surface 100 feet above before it
is transferred to the main drainage
system.Without the Mono pumps,
the two towers would fill up with
water and flood up to the level of the
river.”