Instruction Manual

Please read this instruction manual carefully before
using your hand pump!
 ank you for buying the Air Venturi G4 hand pump.
Hand pumps are the most convenient and a ordable way to charge
your PCP air ri e.  ere are several features that make it easy to use
and lengthen the life of the pump.
• Maximum 200 bar  ll pressure.
• Ergonomically designed handle with synthetic cover.
• Built-in moisture trap & a built-in particle  lter embedded in one
side of the handle; the  lter traps the moisture and protects your
pump & air ri e.
• A compartment in the other side of the handle for spare parts.
• Precise, built-in pressure gauge (manometer) in the frame to
protect it from impact.
• Quick-disconnect & tube locking that makes it easier to transport
the pump.
• Wide footplate with adjustable pumping angle.
• Includes hose & 1/8 BSPP adapter.
ASSEMBLY
Assemble your hand pump as shown in “Assembly Steps” picture
at le .
Don’t use tools to tighten the handle. Finger tightness is su cient.
USE OF THE PUMP
1. Attach the pump adapter to your gun’s air  ll port. Make sure the
moisture bleed valve is tightened.
2. Grab the handle with your hands and place your feet on the pump’s
footplate.
3. Pump slowly by li ing up and then pressing down the handle.
Continue pumping until you reach your desired pressure level in
your gun’s air reservoir.
4. When you’re done pumping, quickly loosen the moisture bleed
valve of the pump so the moisture- lled air trapped in the hose
is rapidly discharged. Disconnect the hose from your gun’s air
reservoir.
WARNINGS & MAINTENANCE
1. Use this pump to  ll a PCP air ri e only. Do not use it for other
purposes. For best results, use the pump in low humidity.
2. Pump no longer than 5 minutes (approximately 50 pump strokes).
Ever 5 minutes, let the pump cool down for 15 minutes. A er
each pumping session, exhaust the heat and moisture through the
pump’s air bleed valve. Most PCPs can be  lled within 5 minutes.
Cooling the pump a er every 50 strokes or when the pump rod is
very hot will lengthen the life of the pump’s seals and o-rings.
3. Pump slowly and deliberately. Stop for 1-2 seconds at the top and
bottom of each stroke.  e pump  lls the air reservoir with each
stroke, whether up or down, though it feels hardest on the down
stroke—but make the upstroke count, too. Remember to go all the
way to the end of each stroke, as most of the work is accomplished
in the last inch or so of pump rod travel.
4. Use your body weight when it becomes harder to pump. A er
100 bar, the pumping pressure will steadily increase. Using
your body weight gives you more leverage and makes it easier
to pump.
5.  e pump may become harder to operate a er prolonged
use.  is can be due to lack of lubrication or due to
previous lubrication causing the seals and rod
to adhere to each other. Regularly cleaning and lubricating your
pump will keep it in optimum working condition and lengthen
its life. Lightly lubricate the pump rod (Part #48) and then pump
it a few strokes. Use only diver’s silicone grease as a lubricant.
Any other type of lubricant, oil or grease, (including petroleum-
based ones) should never be used.
6. Quickly exhaust the pump’s air bleed valve before you disconnect
your PCP gun. Otherwise, the air  ll port of your gun’s seals and
o-rings may be damaged.
7.  e recommended maximum pressure of this pump is 200 bar.
Do not exceed the manufacturer’s recommended maximum
 ll pressure of your gun’s air reservoir. It may cause a dangerous
situation resulting in serious injury to you and others if an air
reservoir is  lled above the recommended maximum pressure
level. Also, never  ll any air reservoir that is not in good condition
or may be damaged.
8. Always use the pump on  rm, non-slip surfaces.
Assume the appropriate position and posture
for pumping.
9. Do not kink or  atten the hose when using the pump. Never use
a pump if the manometer (air pressure gauge) has been removed
or is known to be damaged or inaccurate.
10. Do not use this pump if you have any physical limitations that
could prevent you from properly using or maintaining the
pump. Do not use the pump if you have health issues that do not
allow you to meet the physical exertion required for pumping.
11.  e silica gel contained in the moisture  lter should be replaced
periodically, but the frequency depends on the climatic
conditions in which the pump is used. Replacing silica gel
every 2-3 months is compulsory in climates that are warm and
have high humidity. Change the silica gel every 4-5 months
in climates that have low humidity.  e entire moisture  lter
should be replaced a er prolonged use.
12. Never attempt to modify or make any changes in the pump.
Use it exactly as it comes from the factory. Always follow this
instruction manual. Any repairs done by someone other than
Air Venturi will void the warranty.
ASSEMBLY STEPS
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ArVentur.com
5135 Naman Parkway
Solon, OH 44139
216-292-2570 • fax [phone]
Copyright ©2014 • Version 01/30/14
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1 Handle plastic
2 Filter
3 Filter receptacle
5 Handle connection unit
6 Handle connection screw
7 Handle
8 Spare parts*
9 Handle cover
10 Silica gel
11 Handle cover
12 12*2 o-ring
13 Air intake cover
14 24*2 o-ring
15 Pivot holder pin
16 Valve cover
17 5.5*2.5 o-ring
18 22*2.5 o-ring
19 Valve body
20 18*2 o-ring
21 Receiver 1
22 Pivot
23 8.73*1.78 o-ring
24 Receiver 3
25 Air discharging valve
26 18*2.5 o-ring
27 Air discharge valve tappet
28 Air discharge valve spring
29 Locking tab
30 Locking tab spring
31 Manometer
32 Locking tab screw
33 Air bleed plastic
34 Air bleed nut
35 Air bleed screw
36 Flexible hose
37 Washer with plastic
38 5.28*7.78 o-ring
39 Air discharge valve cover
40 M8 nut
41 Ball screw
42 Body
43 Stays
44 Stays pin
45 2.5*1.5 o-ring
46 Air intake tappet
47 Clip
48 Receiver 2
50 Pivot valve o- ng
51 Receiver sub-cover
52 24*2.5 o-ring
53 21*2.0 o-ring
54 O-ring bushing
55 Bushing holder
56 10*3 o-ring
57 Cover
58 12*3 o-ring
60 Hose connecting unit
61 Manometer safety
62 Manometer cover
PARTS LIST
SPARE PARTS SET*
A 22*2.5 o-ring (18)
B 24*2.5 o-ring (52)
C 5.5*2.5 o-ring (17)
D Pivot valve o-ring (50)
E 5.28*1.78 o-ring (38)
Ar Ventur
G4 Hand Pump
Instructon
Manual
1-Year Limited Warranty
 e Air Venturi G4 hand pump has a one-year limited
warranty against manufacturing defects.
Failure to properly maintain the pump, abuse or misuse voids the warranty.
Repairs done by anyone other than Air Venturi voids the warranty.
Ar Ventur
G4 Hand Pump
Instructon
Manual
03/05/13