Instructions
G3 Vent Valve Kit
Instructions for installing vent valve. For professional use only.
Part No.:
12 VDC, NPT- 571061; 24 VDC, NPT - 571029
12 VDC, BSPP - 24F537; 24 VDC, BSPP - 24F536
Maximum Working Pressure: 3500 psi (241 bar, 24 MPa)
3A0526E
ENG
Important Safety Instructions
Read all warnings and instructions in this
manual and the G3 Pump instruction manual
included with your unit. Save these instructions.
NOTICE
All user supplied tubing must be rated for the same
pressure or equipment could be damaged.
Kit Parts:
Ref. Description
1VALVE, vent, 12 VDC, NPT 0100
VALVE, vent, 24 VDC, NPT 1000
VALVE, vent, 12 VDC, BSPP 0001
VALVE, vent, 24 VDC, BSPP 0010
2CABLE, 6 ft, vent valve, 2 pin 1111
3FITTING, grease 1111
4PLUG, dryseal, 1/4 NPTF 3333
5SCREW, cap, socket 2222
6GAUGE, pressure, fluid 1111
7 ADAPTER, NPT to BSPP (not shown) 0011
2
3
1
4
ti15466
Qty
571029 571061 24F536 24F537
5
6
Instructions
Instructions
Pressure Relief Valves
The pressure relief valve
uses a pressure adjustment
screw (a) to set the pressure release point. It is not
intended as a way to
relieve pressure during
normal operation but as a
protective measure in the
event there is an unintended
pressure increase in the
system.
NOTE:
• Do not use this pressure relief valve as a means
of relieving pressure in day-to-day, normal cycle
operation. Use the pressure relief procedure
described in the next section of this manual to
relieve pressure during normal cycle operation.
• Factory set to 3000 psi (207 bar, 20.7 MPa).
The pressure adjustment screw (a) will require periodic
adjustments. Whenever the valve is set/adjusted (after
the set point is found) it is important to ensure that the
valve is not bottomed out and there is at least 1/2 turn of
adjustment remaining. This is determined by turning the
screw (a) 1/2 turn and then back turning it out again.
NOTE: Turning adjument screw (a) clockwise, increases
pressure.
a
ti15463
locking
nut
Relieve pressure in system by using two wrenches
working in opposite directions on pump element and
pump element fitting to only loosen fitting.
NOTE: When loosening pump element fitting, do NOT
loosen pump element. Loosening pump element will
change the output volume.
ti14711
IG. 1
F
Installation
Reference numbers used in these instructions correspond to parts included in Kit and are provided on page
1. Parts identified with an alpha character are user provided or already installed components.
1. Disconnect power source.
Pressure Relief
SKIN INJECTION HAZARD
High-pressure fluid from dispense device, hose leaks, or
ruptured components will pierce skin. This may look like
just a cut, but it is a serious injury that can result in amputation. Get immediate surgical treatment.
Follow Pressure Relief Procedure in this manual, when
you stop dispensing and before cleaning, checking, or
servicing equipment.
2 3A0526E
2. If unit has already been in service, relieve pressure.
Instructions
3. Mount vent valve block (1) to a fixed surface near
the G3 pump using mounting holes (b) and two
socket screws (5).
1
b
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FIG. 2: Mounting Dimension a = 3.25 inches (8.255
cm). Thread 1/4 - 20 UNC-2A
4. Connect end of cable (2) to the G3 (F
IG. 3).
NOTE: Verify correct port on G3 label is selected.
Locate symbol shown in F
IG. 3 on G3 label to select
correct port.
NOTE: If using one of the BSPP Vent Valve Kits, install
adapter (7) into pump element prior to installing pump
element fitting (c) then continue installation, Step 6.
6. Connect inlet tube (c) to pump element fitting (d)
and inlet fitting (e) to manifold port (stamped with an
“I”) (F
IG. 5). Wrench tighten only.
d
e
c
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ti15464
FIG. 5
7. Connect main tube (f) to any manifold outlet (g)
(stamped with an “O”) and injector inlet (h) (F
IG. 6).
Vent Val ve
Symbol
2
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FIG. 3
5. Connect cable connector (2) to solenoid valve (1)
(F
IG. 4).
2
1
g
f
h
FIG. 6
8. Use a wrench to loosen plug (j) from return location.
Remove plug from port (F
IG. 7).
j
ti15544
FIG. 4
3A0526E 3
FIG. 7
ti15468
9. Apply thread sealant (user supplied) to threads (k)
of a tube fitting (m).
NOTE: Although the example shown in F
IG. 8 shows
a 90° elbow fitting, this is only shown for reference.
The user may use what ever fitting best suits their
installation.
10. Install tube fitting (m) in open port.
k
m
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FIG. 8
• Plugs (must be installed in any open outlet port)
(5)
• Pressure Gauge (optional) (7)
Install any of these parts in the remaining outlet
ports on the manifold block.
NOTE: Any port not used by a pressure gauge (7) or
zerk grease fitting (4) MUST have a plug (5)
installed in the opening.
Retrofitting Existing Installations
NOTE: These instructions assume grease is already
loaded in injector valves.
Installation
11. Wrench tighten fitting (m) then torque to 50 in. lbs
(5.6 N•m).
12. Install vent tube (n) between vent port (p) and fitting
(m) (F
IG. 9).
m
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n
p
FIG. 9
13. The kit includes the following additional parts:
• Zerk Grease Fitting (optional) (4)
1. Disconnect power source.
2. Relieve pressure, page 2.
3. Remove existing plumbing installed between pump
element (d) (F
IG. 5) and injector inlet (h) (FIG. 6).
4. Continue installation following Installation Instructions, Steps 3 - 13, on pages 3 - 4.
All written and visual data contained in this document reflects the latest product information available at the time of publication.
Graco reserves the right to make changes at any time without notice.
Original instructions. This manual contains English. MM 3A0526
Graco Headquarters: Minneapolis
International Offices: Belgium, China, Japan, Korea
GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440-1441
Copyright 2010, Graco Inc. is registered to ISO 9001
www.graco.com
7/2010, revised 4/2011
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