SER 7783-A4
SERVICE INSTRUCTIONS
7783-A4 , 7783-B4 and 7783-C4
Low Pressure Fluid Lubricant Pumps
7783-A4
7783-B4
7783-C4
DESCRIPTION
Model 7783 Series Pumps are single-action, low pressure units de-
signed to deliver fluid lubricants from original containers or bulk
tanks.
The differences in the pumps are that model 7783-A4 is used with
55-gallon drums , model 7783-B4 is used with 16-gallon drums and
model 7783-C4 is a stub pump and can be used with extensions .
All models produce a 6:1 material-to-air pressure ratio. The maximum
operating air pressure of 200 psi would,therefore, create a maximum
material pressure of 1200 psi.
The pumps are capable of supplying a high volume of lubricant at a
low rate of speed (e.g.-At 100 psi air pressure,the pump delivers 10
gallons of SAE No. 140 gear oil per minute).
NOTE:
The air motor (323440-4) is packed with lubricant at the fac-
tory and should require no additional lubrication
.
SPECIFICATIONS
PUMP
:
Ratio ..............................................................................................:6:1
Recommended Operating Air Pressure ..............................50-175 psi
Maximum Operating Air Pressure ........................................... 200 psi
Maximum Operating Material Pressure .................................1200 psi
Displacement ..............................................................9.8 cu. in./cycle
Weight (basic pump, approx.) ................................................... 50 lbs.
Dimensions (Figure 1):
“A” (Model7783-A4) ...................................................... 51-23/32”
(Model 7783-B4).........................................................44-7/32”
(Model Tl83-C 4) ..........................................................32-1/8”
“B” (Model 7783-A4) ................................................................33”
(Model7783-B4) ......................................................... 25- 1/2”
(Model 7783-C4) ...................................................... 13-13/22”
Figure 1:
Series 7783 Low-Pressure Pump
AIR MOTOR:
Air Inlet ........................................ ....................................3/4” NPTF
Air Outlet ...........................................................................1 /4” NPTF
Material Outlet ....................................................................1/2” NPTF
Piston Diameter ......................................................................... 4-1/4”
Stroke................................................................................................4”
GENERAL SAFETY REQUIREMENTS
Because these units are incorporated into pressure pumping systems,
it is good practice to observe and use the following safety precautions:
1
Do not exceed the pressure rating of any component in the system.
2
Protect all material and air supply lines from damage or puncture.
FOR FURTHER SERVICE, CONTACT YOUR LOCAL ALEMITE DISTRIBUTION CENTER
Alemite , LLC
167 Roweland Drive, Johnson City, Tennessee 37601
www .alemite.com
396686
SER 7783-A4
Revision (3-15)
1