Graco GL-1 Injector User Manual
GL-1 Injector
Automatic Lubrication System
Graco’s captured seals and improved poppet
design are the best in the business!
• Test results show the difference: GL-1 injectors showed no seal
leakage, bypass or reset failures at 360,000 cycles
• This performance leaves the competition in the dust
Precision-honed Components
for Reliable Operation in the
Harshest Environments
System Setup Tips
• Run branches off main line and “Tee Out”
to banks of injectors instead of in-series
• Locate injectors as close to bearings as
possible to minimize line length to bearing
to enable max pressure to reach injectors
• Place pressure switch beyond last injector
• Use large diameter tubing (1/4 in.) to
lessen restrictions
• Make sure you have enough pressure to
achieve normal 2,500 psi (172 bar)
• Make sure you vent down to the minimum
reset pressure of your smallest injector
To adjust:
1. Loosen the lock nut
2. Rotate 5/8 inch output adjustment
nut clockwise to decrease grease
output–decrease the travel of
the piston
Technical Specifications
Maximum operating pressure 3500 psi (241 bar)
Minimum operating pressure 1850 psi (128 bar)
Suggested operating pressure 2500 psi (172 bar)
Reset pressure 600 psi (4.1 bar)
3
Output volume per cycle 0.008–0.08 in
Recommended fluids Uses NLGI #2 grease down to 32˚ F (0˚ C)
Instruction manual 308953
Design Guide 309015
Zerk Fitting Outlet 1/8 in npt
Supply Line Outlet 1/8 in npt
Inlet 3/8 in npt
Adjustment Screw
Visual Indicator Pins
Lock Nut
Zerk Fitting with Cap
Supply Line Outlet
(0.13–1.13 c3)
3. Rotate 5/8 inch output adjustment
nut counter-clockwise to increase
grease output–increase the
travel piston
©2014 Graco Inc. 340447 Rev. C 01/14 All other brand names or marks
are used for identification purposes and are trademarks of their respective
owners. All written and visual data contained in this document are based
on the latest product information available at the time of publication. Graco
reserves the right to make changes at any time without notice.
Mounting Holes
Same as the competition for
an easy retrofit
Lubricant Inlet
Ordering Information
114901 One GL-1 Injector and Manifold
114902 Two GL-1 Injectors and Manifold
114903 Three GL-1 Injectors and Manifold
114904 Four GL-1 Injectors and Manifold
114905 Five GL-1 Injectors and Manifold
114909 Replacement GL-1 Injector
GL-1 Series Accessories
115120 GL-1 Injector Outlet Adapter Kit
115119 GL-1 Clear Plastisol Injector Cover
114916 GL-1 & GL-11 Zerk Fitting and Cap Kit
Contact us today!
Call 800-533-9655 to speak with a Graco representative,
or visit www.graco.com for more information.
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