Pump Solutions Group PZiG Series - Manual (Page 9)

8
Installation
The following examples show layouts for a hose connection type pump.
Piping
●Floor installation procedure
The following explains an example where a TACMINA
tank is used.
1Remove the hose nut on the tank side, pass the
suction-side hose through the nut, connect the
hose to the suction valve on the tank, and tighten
the hose nut.
2Connect the hose to the suction-side hose joint
on the pump by the same procedure as in (1)
above.
3In the same way, connect the discharge-side
hose to the discharge-side hose joint on the
pump.
4Install the anti siphonal check valve at the injec-
tion point.
5Connect the discharge-side hose to the anti
siphonal check valve.
• We recommend installing a relief valve for automati-
cally releasing abnormal pressure to air in the dis-
charge-side piping.
• Install a pressure gage on the discharge-side piping
to measure the pressure on the pump's discharge
side.
• Install the pump as close as possible to the chemical
tank.
If the suction-side piping is too long, cavitation some-
times occurs and metering performance can no
longer be ensured.
Flooded Installation
Check valve
Suction valve
(option)
4
5
2
3
1
Strainer
Suction pipe cover
Check valve
Be sure to connect the
strainer (provided) to the
tip of the suction-side hose
to prevent dirt from
entering the pump head or
coming into contact with
the valve seat.
1
6
8
7
4
5
2
3
●Tank-top installation procedure
The following explains an example where a TACMINA
tank is used.
• Installing the pump on a chemical tank containing
chemicals that are likely to generate bubbles is not
recommended.
• The suction height of this pump is -1.5 m. The suction
capabilities of this pump may be impaired if the valve
seat in the pump head is dry.
1Secure the pump at the specified position on the
top of the tank using the fixing bolts (provided).
2Remove the hose nut from the strainer, pass the
hose through the nut and install the strainer.
3Cut the hose so that the strainer is 30 mm above
the tank bottom.
4Pass the hose through the suction pipe cover and
pump's suction-side hose nut, and connect the
hose to the suction-side joint on the pump.
5Set the suction pipe cover in position.
6Install the anti siphonal check valve at the injec-
tion point.
7Pass the discharge-side hose through the hose
nut, and connect to the discharge-side hose joint
on the pump.
8Connect the discharge-side hose to the anti
siphonal check valve.
Suction-lift Installation
05-45_PZiG Series(2)English 06.8.4 9:39 AM y [ W 8