Table of Contents
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Description
The major components of the stub pumps in the model 9968
series consists of an air-operated motor and a pump tube. The air
motor connects directly to a double-acting reciprocating pump
tube. These low-pressure stub pumps (5:1 ratio) are designed to
deliver all grades of oil.
Pump Extensions
Extensions that screw directly into the pump's fluid inlet allow
the pump to accommodate different size drums and tanks.
Extensions are accessory items and are not included with the
pump. See Table 2.
Models 9968 Series Comparison
Model 9968 and 9968-M * include a 2 " NPTF (m) bung
adapter that allows installation directly onto original containers or
bulk tanks. The bung adapter is not included with model 9968-A.
* Model 9968-M contains components (See Table 1)
manufactured with BSPT(P) thread connections that include:
• air motor model 339413-A1
• a fluid outlet adapter in the pump tube's body
Specifications
Air Motor
Piston Dia. x Stroke
Air Motor
Model
in.
339413
3 x 3-5/16
7.6 x 8.4
339413-A1
For details on the air motors, refer to Service Guide SER 339413
Pump Tube
Pump
Fluid
Model
Outlet in Body
9968, 9968-A 1/2 " NPTF (f)
9968-M
1/2 " NPTF (f) **
* For detailed information, refer to Figure 3
** Includes a 1/2 " BSPP (f) x 1/2 " NPTF (m) fluid outlet adapter
Table 1 Low-Pressure Stub Pump Specifications
670789
and is not to be copied, used, or disclosed to others without express written permission.
Service Guide
Low-Pressure Stub Pump
Maximum Air
Air Inlet
cm
1/4 " NPTF (f)
1/4 " BSPT (f)
Max.
Delivery/Min.
Fluid
(Approximate)*
Pressure
psi
bar
gals
liters
750
52
7
26.5
167 Roweland Drive, Johnson City, Tennessee 37601
www.alemite.com
Copyright
This document contains confidential information that is the property of Alemite, LLC
Pressure
psi
bar
150
10.3
Displacement
per Cycle
Pump Model
3
3
in
cm
9968
9968-A
7.2
118
9968-M *
* With BSPT(P) Thread Connection Components (See Table 1)
Figure 1 Stub Pump Model 9968 Series
Alemite, LLC
©
2010 by Alemite, LLC
9968
9968-A
9968-M
Bung Adapter
Included
Not Included
Included
Model 9968-M Shown
SER 9968
Revision (8-10)
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Related Manuals for Alemite 9968
Summary of Contents for Alemite 9968
-
Page 1: Specifications
See Table 2. Models 9968 Series Comparison Model 9968 and 9968-M * include a 2 " NPTF (m) bung adapter that allows installation directly onto original containers or bulk tanks. The bung adapter is not included with model 9968-A. - Page 2 SER 9968 Low-Pressure Stub Pump Figure 2 Low-Pressure Stub Pump Model 9968 Series - Exploded View Revision (8-10) Alemite, LLC...
- Page 3 338091 Ring, Back-Up 338106 (15) 338090 Tube 338120 (16) 326750-B1 Adapter, Bung, 2 " NPTF (m) Model 9968, -M (1d) 339375 Washer, 1-1/8 " OD 339412 Spring, Tapered 339413 172270-13 Ball, 1-1/16 " Dia 339413-A O-Ring, 1-11/16 " ID x 1-7/8 " OD...
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Page 4: Performance Curves
338977 * 318040-4 * w/ sealing gasket Table 2 Low-Pressure Stub Pump Model 9968 Series Accessories Performance Curves A pump’s ability to deliver fluid is based on the pressure (psi/bar) and quantity (cfm/lpm) of air supplied to the motor and the amount of fluid discharge [back] pressure to be overcome within the system. - Page 5 Low-Pressure Stub Pump SER 9968 Alemite, LLC Revision (8-10)
- Page 6 Step for Model 9968 and 9968-M Only Release all pressure within the system prior to 2. Remove the Bung Adapter from the Tube as required.
- Page 7 (14) into the Body. components for any imperfections. Ensure a smooth and clean contact is obtained when assembled. Step for Model 9968-M Only EXAMPLE: Place Ball (25) into Foot Valve 9. Screw Adapter (29) [with Loctite 242] into the Body (27).
- Page 8 16. Screw and seat the Tube assembly into the Body. • Make sure both Rings are not visible. Step for Model 9968 and 9968-M Only 17. Slide Bung Adapter (22) onto the Tube. 18. Screw the Foot Valve assembly into the Tube.
- Page 9 Low-Pressure Stub Pump SER 9968 With air pressure at zero: Attach Air Motor to Pump Tube 2. Connect a product hose to the pump’s fluid outlet. 23. Clamp the pump assembly in a soft-jaw vise at Bung • Direct the hose into an appropriate collection Adapter (22) or Body (8).
- Page 10 SER 9968 Low-Pressure Stub Pump Troubleshooting Chart Pump Indications Possible Problems Solution Pump does not cycle 1. Air motor not operating properly 1. Inspect air motor and rebuild or replace as 2. Pump tube jammed and/or contains necessary loose components 2.
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