Hanna Instruments BL Series Pumps User Manual

Page 10

LEGEND

HOSE

PIPE

CONNECTION

RESEVOIR

MANUAL
SHUTOFF
VALVE

PUMP

FILTER /
FOOT VALVE

CHECK VALVE

EXAMPLE OF TYPICAL INSTALLATIONS

Flooded Suction Installation

Suggested Installation
for consistent output
when using a low
stroke rate. Also sug-
gested for highly vis-
cous chemicals.

A slight suction pres-
sure avoids self-prim-
ing problems, espe-
cially with high viscos-
ity liquids.

Suction Lift Installation

Suggested installation
for most in-line appli-
cations with nominal
output and pressures.

The maximum self-
priming height is 1.5
m (5 ft.). It is advisable
to install a level con-
troller in order to stop
the pump when feed
tank liquid level is low.

Assembling the Hose to the Valve
The end of the valve is specially tapered to
form a leak free seal when the hose is prop-
erly installed.
Be sure to seat the hose completely so that
there is no gap. Push the hose until it covers
the end of the valve completely.

Suction and Discharge Valves
The suction and discharge valves located on
the pumphead should not be interchanged as
they are different internally. The discharge
valve is fitted with a valve guide and will not
function properly if used on the suction side.