GPI HP-100 Dual-Flo User Manual

5252 East 36th Stree t North
Wichita, K S USA 67220-32 05
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FAX: [phone]

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HP-100 Dual-Flo

®

Petroleum Hand Pump

Owner’s Manual

STOP

DO NOT RETURN

THIS PRODUCT

TO THE STORE!

Plea s e con t a ct GP I b efor e
returning any product. If you
are missing parts or experience
problems with your installation,
our Customer Support Depart­ment will be happy to assist you.

GPI Customer Support

800-835-0113 or

316-686-7361

TABLE OF CONTENTS

General Information ....................................................1

Installation ..................................................................2

Operation and Maintenance ....................................... 3

Troubleshooting ..........................................................4

Illustrated Parts List ....................................................5

Specications .............................................................6

Parts and Service ....................................................... 6

GENERAL INFORMATION

The GPI HP-100 DUAL-FLO® Petroleum Hand Pump
is designed to manually pump petroleum products
compatible with aluminum and Buna-N. The user has
the exibility of operating the pump at two owrates. A
setting of 1/2-gallon provides faster high-capacity ow.
A 1/4-gallon setting allows for easier pumping of uids.
The HP-100 Hand Pump is designed for use on a tank
with a 2-inch bung.

Read Me!

Observe standard precautions when handling fuel.

• Keep fuel away from open ame or spark.

• Do not refuel vehicles or equipment with engines
running or while equipment engine is hot.

• Do not smoke while refueling.

06/12

1

Rev. C 921407-10

Use the HP-100 Hand Pump only with diesel fuel
(biodiesel blends B20), gasoline (alcohol blends E15),
hydraulic uid, kerosene and oil (up to 30 wt.). This
equipment should not be used to pump chemicals.

INSTALLATION

Use the following procedures to install the HP-100 Hand
Pump on a tank with a 2-inch bung.

Install Suction Pipe

1. Remove the two protective plugs from the pump
inlet and outlet ports.

2. Wrap the threaded end of the suction pipe with 3 to
4 turns of thread tape.

3. Insert the suction screen into the inlet cover.

4. Place the spacer in the inlet cover to secure the inlet
screen.

5. Install the suction pipe into the inlet cover and tighten
rmly with a pipe wrench.

Install Pump on Tank

1. Before installing the pump, clean the tank interior
of all dirt and foreign material.

2. Lubricate the threads of the inlet cover with thread
tape or a thread-sealing compound approved for
use with petroleum fuels.

3. Extend the adjustable suction pipe to its full length
and carefully insert it into tank opening. The suction
pipe will adjust to the length needed and rest on the
bottom of tank.

NOTE: The suction pipe supplied has a variable length

of 22 to 40 inches. If additional length is needed,
order the 15-inch Suction Pipe Extension Kit.

4. Thread the inlet tting of the pump onto the tank
and turn the pump to tighten snugly.

NOTE: To prevent the buildup of pressure and possible

fuel leakage through the nozzle, make sure the
tank is vented.

Install Hose & Nozzle Assembly

Apply 3 to 4 wraps of thread tape to the threaded end of
the hose and hand-tighten into the outlet cover until snug.

Install Handle

The HP-100 Hand Pump gives the operator a choice of
two ow settings:

• 1/4-gallon setting has low resistance and pumps 1/4

gallon per stroke cycle.

• 1/2-gallon setting has higher resistance and pumps

1/2 gallon per stroke cycle.

Volume per stroke is determined by connecting the piston
shaft to the appropriate handle setting as outlined below.

NOTE: Clevis pins may be installed from either side of

handle.

1. Slide the handle grip onto the pump handle.

2. To install the links on the pump, insert a long clevis
pin through the link ends and the pump’s link holes.
Secure with a small cotter pin. (Figure 1)

Figure 1

3. Attach the free ends of the links to the bottom, outer
surfaces of the handle. Insert a long clevis pin through
the holes on both links and the lowest hole on the
handle. Secure with a small cotter pin. (Figure 2)

Figure 2

Attach links to first hole

➤

➤

➤

Use for 1/2-gallon setting
Use for 1/4-gallon setting

4. Insert a screwdriver in the piston shaft of the pump
and pull the piston out. Install the shaft on the handle
at either piston hole by placing a short clevis pin
through the handle and the piston shaft end and
securing with the hitch clip pin.

NOTE: Select the upper piston hole on the handle for the
1/2-gallon setting (Figure 3) or the lower piston hole for

the 1/4-gallon setting. Flow settings can be changed at
any time by repositioning the piston shaft on the handle.

Figure 3

➤

1/2-gallon setting
shown here

2

NOTE: Lock the handle to the pump by pushing the

handle against the pump and inserting a padlock
through either of the top holes in the handle and
through the pump’s lock hole. (Figure 4)

Figure 4

OPERATION & MAINTENANCE

To Dispense Fluid

1. Remove the nozzle from its holder and insert into
the receiving tank of the equipment or vehicle.

2. Choose a handle setting for the desired owrate:

• 1/4-gallon setting for low-volume, low-resistance

pumping

• 1/2-gallon setting for high-volume, high-resistance

pumping

3. To operate pump, manually move the handle in a
push/pull motion.

4. After dispensing the desired amount of uid, drain
the hose and nozzle. Place the nozzle in its holder
and return the handle to its upright storage position.

During daily use, the GPI HP-100 Hand Pump is es­sentially maintenance free. However, the pump should
be inspected periodically for signs of leakage. If leaks
are present, make appropriate repairs. Refer to the
Troubleshooting section.

3