User Manual

Installation

Nut

Retaining ring

PVC braided hose

(1/4”×3/8”)

Nut

Retaining ring

PE tube

(1/4”×3/8”)

The connection procedure will be described by pump type.

Connecting

Model for injection of general chemicals: PZ-31/61/12-VEC/VFC

■PVC braided hose/PE tube

• When bending the hose/tube, provide sufficient leeway in the bending so that the hose/tube will not break. Also en-

sure that it will not be rubbed against or trodden on.

• Insert the hose/tube firmly so that it will not become disconnected, and tighten the nuts securely. Do not excessively

tighten the nuts. Doing so may damage or break the joint.

• If the temperature of a liquid or ambient temperature is higher than room temperature, the tightening force will be re-

duced, and the hose/tube may become disconnected. After operation has started, tighten up the nuts as appropriate.

• When tightening the nuts, hold the hose/tube to prevent it from being twisted. The joints and other areas may be loos-

ened by the return force of the hose/tube.

• The pump comes with a 5-meter long hose/tube for both the discharge side and suction side. When longer hose/tube

is used, the pressure loss may exceed the pump’s maximum discharge pressure so thicker hose/tube will be required.

Provide details on the (1) viscosity of the liquid, (2) length of the pipes (how they are positioned) and (3) specific grav-

ity of the liquid to a TACMINA representative who will select the appropriate hose/tube size.

• When disconnecting the hose/tube for jobs such as maintenance and then afterwards re-connecting the same hose/

tube, cut about 10 mm off the end of the hose/tube before re-using them.

Model Liquid-end material Hose/tube Page

Model for injection of general chemicals

PZ-31/61/12-VEC/VFC

Discharge side : PE tube

Suction side : PVC braided hose

PZ-31/61/12-FEC/FFC PE tube

PZ-31/61/12-FTC FEP tube

Model for injection of boiler chemicals PZ-31-FEC (PP)

Discharge side : PP tube

Suction side : PE tube

Model for injection of sodium hypochlorite

PZ-31/61/12-CL

Discharge side : PE tube

Suction side : PVC braided hose

Model w/ automatic air-release function

for injection of sodium hypochlorite

ARPZ-31/61/12

Discharge side : PE tube

Suction side : PVC braided hose