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Medium-Pressure Material Pump
Description
The major components of the pump models in the
7896 series consist of a reciprocating air motor and a
double-acting pump tube. The pump tube is divorced
from the motor which:
• protects the motor from product contamination
• allows separation without product leakage
The pump tube is designed to enable the delivery of a
variety of materials. These medium-pressure (22:1)
pumps contain a bung adapter [2 " NPTF (m)] that allows
operation directly from original drums or bulk containers.
Models 7896-A5 and 7896-B5
Each pump model is designed with a pump tube length
to accommodate different size containers. See Figure 1.
NOTE: Each model can be hoist-mounted.
Refer to Page 2 for details.
Specifications
Air Motor
Piston Diameter / Stroke
Air Inlet/Outlet
Inches
Centimeters
6 / 4
15.2 / 10.2
For air motor data, refer to Service Guide SER 323640-4
Pump Tube
Max. Material
Pressure
Material
Outlet
psi
Bars
1 " NPTF
2200
152
* For detailed information, refer to Figure 2
Table 1 7896 Model Series Specifications
This document contains confidential information that is the property of Alemite Corporation
670754
and is not to be copied, used, or disclosed to others without express written permission.
Service Guide
Max. Air Pressure
psi
Bars
3/4 " NPTF (f)
100
7
Delivery/Minute
Displacement/
(Approximate)*
Cycle
gal
l
ci
cc
7
26.5
9.62
157.6
Alemite Corporation
167 Roweland Drive, Johnson City, Tennessee 37601
www.alemite.com
©
Copyright
Container Size
Pump
Model
gal
7896-A5
55
7896-B5
5
Figure 1 Medium-Pressure Pump Model 7896 Series
2004 by Alemite Corporation
7896-A5
7896-B5
X
l
Inches
m
Inches
200/205
62-5/8
1.59
32-1/2
-
43
1.09
12-7/8
SER 7896-A5
Revision (2-04)
Y
Cm
82.6
32.7
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Table of Contents
Related Manuals for Alemite 7896 Series
Summary of Contents for Alemite 7896 Series
- Page 1 167 Roweland Drive, Johnson City, Tennessee 37601 www.alemite.com © Copyright 2004 by Alemite Corporation SER 7896-A5 This document contains confidential information that is the property of Alemite Corporation 670754 Revision (2-04) and is not to be copied, used, or disclosed to others without express written permission.
-
Page 2: Performance Curves
(liters) per minute (X axis) to air consumption in cubic feet (liters) per minute (right Y axis) and to material discharge pressure in psi/Bars (left Y axis). Figure 2 Delivery versus Discharge Pressure and Air Consumption Revision (2-04) Alemite Corporation... - Page 3 See Figure 3-B 328031 172207-4 Lockwasher, 1/2 " 328037 Nut, 1/2 " -20 331070-C1 331070-D1 Legend: Part numbers left blank (or in italics) are not available separately Figure 3-A Medium-Pressure Material Pump Model 7896 Series - Exploded View Alemite Corporation Revision (2-04)
- Page 4 SER 7896-A5 Medium-Pressure Material Pump Figure 3-B Medium-Pressure Material Pump Model 7896 Series - Exploded View Revision (2-04) Alemite Corporation...
- Page 5 Kit, Major Repair See Figure 4 331916 Kit, Changeover See Figure 5 393004 Kit, Upper V-Packing (includes 8 V-Packings for upper end of tube) 393005 Kit, Lower V-Packing (includes 5 V-Packings for lower end of tube) Alemite Corporation Revision (2-04)
- Page 6 X171018-31 O-Ring, 1-3/4 " ID x 1-7/8 " OD 171700-80 Ball, 1-1/4 " Dia. 327646 Spacer 330973 Body, Valve 330302 Spring NOTE: Part numbers in italics are not available separately Figure 4 Major Repair Kit 393003 Revision (2-04) Alemite Corporation...
- Page 7 Washer, 1.254 " 331009 Ring, Female 330704 Ring, Female (Brass) X171018-32 O-Ring, 1-7/8 " ID x 2 " OD 326069-24 V-Packing, (Teflon) NOTE: Part number in italics is not available separately Figure 5 Changeover Kit 331916 Alemite Corporation Revision (2-04)
- Page 8 SER 7896-A5 Medium-Pressure Material Pump Revision (2-04) Alemite Corporation...
- Page 9 (2" x 4") onto the surface of Upper Mounting (16). See Figure 6. 4. Lower the Air Motor onto the wood block. Figure 6 Separation of Air Motor from Pump Tube with use of Wooden Block Alemite Corporation Revision (2-04)
-
Page 10: Optional Procedures
Figure 3-B 34. Unscrew Valve Seat (20) with Screw (21) as required. V-Packing (Buna-N and Teflon) O-Ring, 1-3/4 " ID x 1-7/8 " OD O-Ring, 1-7/8 " ID x 2 " OD Table 4 Lubricated Components Revision (2-04) Alemite Corporation... - Page 11 Medium-Pressure Material Pump SER 7896-A5 Refer to Figure 3-B Parts List for Parts Identification Figure 7 Pump Tube Assemblies 331070-C1 and 331070-D1 - Section View Alemite Corporation Revision (2-04)
- Page 12 26. Screw the Extension Cylinder (knurled end first) [with • V-Packings (24) [concave surface upward] ..Qty 5 Loctite 222] into the Body assembly. • Male Ring (38) [flat surface upward] ....Qty 1 • Do not tighten at this time. • Washer (22)............Qty 1 Revision (2-04) Alemite Corporation...
- Page 13 (12). The pump must cycle with an initial air oil may overflow the opening of the Packing Screw on pressure setting of 15 psi (1 Bar). initial start-up. This is due to the position of Rod (11) [not at top dead center]. Alemite Corporation Revision (2-04)
-
Page 14: Initial Start-Up
14. Set the air pressure to 100 psi (6.9 Bar). 15. Operate the control valve into the container momentarily. * Lubricate the V-Packings once again after 8 hours of operation. Thereafter, lubricate once every 24 hours of operation. Revision (2-04) Alemite Corporation... -
Page 15: Installation
Should oil (solution) overflow the torque hole in the Packing Screw, tighten the Packing Screw clockwise an additional 1/8 turn. IMPORTANT: After 8-10 hours of operation, inspect the Packing Screw for leakage once again. Tighten an additional 1/8 turn as required. Alemite Corporation Revision (2-04) -
Page 16: Troubleshooting Chart
6. Worn or damaged Valve Seat (40) 7. Worn or damaged V-Packings (24) 8. Worn or damaged Rod (11) 9. Worn or damaged Cylinder (43) 10. Worn or damaged Spring (37) Changes Since Last Printing Changed Stop Washer 318866 to 317419 Revision (2-04) Alemite Corporation...
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