Alemite 7835-SDTR1 Service Manual Download Page 1

      

Service Guide

7835-SDTR1

Alemite Corporation

PO Box 473515, Charlotte, North Carolina 28247-3515

www.alemite.com

Copyright 

© 

2000 by Alemite Corporation

This document contains confidential information that is the property of Alemite Corporation

670653

and is not to be copied, used, or disclosed to others without express written permission.

Figure 1   Pump Model 7835-SDTR1

 

Description

NOTE: The components within the fluid-wetted path of
this pump are stainless steel and Teflon.

CAUTION

This pump is tested in mineral oil. Flush the pump thor-
oughly with a solvent compatible with the product dis-
pensed as required.

The major components of pump model 7835-SDTR1 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. This medium-pressure (5:1) pump includes a bung adapter 
[2 " NPTF (m)] that allows operation directly from original 55-gallon 
(200/205 l) drums

Specifications

Air Motor

Pump Tube

Piston

Diameter x Stroke

Air Inlet

Maximum

Air Pressure

In

Cm

psi

Bars

3 x 1-5/8

7.6 x 4.1

1/4 " NPSI (f)

200

13.8

For details on the air motor, refer to Service Guide SER 338905

See Figure for performance curves.

Material

Outlet

Max. 

Material 
Pressure

Max. Free-Flow 

Delivery/Minute *

Recommended 

Continuous 

Delivery/Minute

Displacement

per Cycle

psi

Bars

Gallons

Liters

Gallons Liters

In 

3

Cm 

3

3/4 " NPTF (f) 1000

69

4.5

17

2.75

10.4

3.6

59

See Figure 2 for performance curves.
* SAE 10 oil at 75 ° F (24 ° C) and 100 psi [6.9 Bars] air pressure.

Table 1   Pump Model 7835-SDTR1 Specifications

Medium-Pressure Stainless Pump

SER 7835-SDTR1

Revision 8-00

1-800-548-1191-http://[email protected]

Summary of Contents for 7835-SDTR1

Page 1: ...roduct contamination allows separation without product leakage The pump tube is designed to enable the delivery of a variety of materials This medium pressure 5 1 pump includes a bung adapter 2 NPTF m...

Page 2: ...l discharge back pressure to be overcome within the system This chart contains curves based on four different air pressures The curves relate delivery in gallons liters per minute X axis to air consum...

Page 3: ...m 1 321639 4 3 328030 Coupler 1 4 NPTF f 1 328030 3 4 321639 Cover 1 328034 2 5 Tube Assembly Pump 1 See Figure 3 B 330050 6 6 Bar Adjustment 1 338904 5 7 Washer Flat 1 4 3 338905 1 8 Screw 1 4 20 x...

Page 4: ...835 SDTR1 Medium Pressure Stainless Pump Revision 8 00 4 Alemite Corporation Figure 3 B Medium Pressure Stainless Pump Model 7835 SDTR1 Exploded View 1 800 548 1191 http www partdeal com info partdeal...

Page 5: ...ess Steel 1 319188 20 22 317426 Spacer Stainless Steel 1 319334 27 23 318854 Adapter Stainless Steel 1 322321 9 24 331745 Washer Lipped 1 19 Stainless Steel 1 322322 15 25 323126 Cup 1 187 ID x 1 805...

Page 6: ...Revision 8 00 6 Alemite Corporation SER 7835 SDTR1 Medium Pressure Stainless Pump 1 800 548 1191 http www partdeal com info partdeal com...

Page 7: ...rom the Coupling Bung Adapter 20 Remove Bung Adapter 32 from the Cylinder as required Overhaul NOTE Refer to Figures 3 A and 3 B for component identification on all overhaul procedures Prior to perfor...

Page 8: ...acking Rod 31 bore of Cylinder Table 3 Components Lubricated in Clean Mineral Oil 4 Install Packing Rod 15 threaded end first into the top of the Outlet Body Allow the threaded end to extend from the...

Page 9: ...onnect Air Motor to Pump Tube 27 Position the Outlet Body vertically in the vise 28 Pull Packing Rod 15 above the Outlet Body 29 Slide the Air Motor Assembly onto the Packing Rod 30 Push Air Motor Ass...

Page 10: ...material is once again free of air 16 Set the air pressure to the normal operating pressure 17 Operate the control valve into a container 18 Shut off the control valve Visually inspect the pump for e...

Page 11: ...not sufficiently tight 2 Worn or damaged Packing Rings 11 3 Damaged Packing Rod 15 1 Tighten Packing Nut 9 with use of torque bar 2 Replace Packing Rings 11 3 Inspect Packing Rod 15 and replace as ne...

Page 12: ...ision 8 00 12 Alemite Corporation Every effort has been made to ensure that the information within this publication is accurate Please send any comments or inquiries to chris schrader btrinc com 1 800...

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