In
Pumping
Station
1
valve
is
placed
before
and
1
is
placed
after
the
pump
.
So
complete
length
of
assembly
comprising
of
1
pump,
1
check
valve
&
2
sluice
valve
becomes
very
long
.
This
results
into
higher
space
requirement
and
so
higher
cost
of
land
,higher
cost
of
excavation
and
higher
cost
of
civil
construction