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IMPORTANT: O-RINGS (7 & 12) AND BACK-UP RINGS (6 & 11) MUST BE 

INSTALLED IN THE CORRECT POSITION AS SHOWN OR THE SPRAY GUN WILL 

LEAK AND PERMANENTLY DAMAGE THE O-RINGS. SEE “FIGURE 2”. 

5.

 

Insert new Stem (9) through Retaining Screw Sub-Assembly (4 thru 7), 

inserting rounded end through O-ring (7). 

6.

 

Install and tighten Retaining Screw Sub-Assembly and Stem into 

Valve Body (2) with new Gasket (5). 

7.

 

Insert new Spring (3) over Stem (9). 

8.

 

Re-assemble into Housing (18). 

NOTE: Be careful not to lose Trigger Spring (3). 

 

 

 
 
 
 
 
 
 
 
 
 
 

 

 

Summary of Contents for GunJet PW4000A

Page 1: ...PW4000A GunJet Spray Gun USER GUIDE spray com MI PW4000A...

Page 2: ...l PW4000AW incorporates a continuous Weep feature to minimize the chance of freezing and with the exception of the valve seat sub assembly the PW4000A and PW4000AW GunJet spray guns are identical and...

Page 3: ...CHARGE NOZZLE A MINIMUM OF 4 0 FEET 1 22 M FROM THE TRIGGER MECHANISM DO NOT ASSEMBLE DISCHARGE NOZZLE DIRECTLY INTO THE SPRAY GUN 1 DO NOT aim gun at any person or any part of the body Fluids under h...

Page 4: ...dopt a secure body stance prior to and during spray operation to safely control the high reactionary force of this unit 3 DO impress on other people in the spraying area the importance of obeying stri...

Page 5: ...ed the maximum operating pressure to be used When spray gun is being used in a possible explosive or flammable environment a grounded type hose should be used 3 Follow your pump and component parts ma...

Page 6: ...move the five Screws 19 and Housing 18 See Figure 1 Page 9 6 Lift out all internal parts leaving all parts assembled Trigger Lock 17 should remain in Housing 18 7 Clamp the Valve Body 2 and remove Ret...

Page 7: ...DAMAGE THE O RINGS SEE FIGURE 2 5 Insert new Stem 9 through Retaining Screw Sub Assembly 4 thru 7 inserting rounded end through O ring 7 6 Install and tighten Retaining Screw Sub Assembly and Stem int...

Page 8: ...8 Figure 1 Figure 2...

Page 9: ...9 PARTS LIST...

Page 10: ...10...

Page 11: ...11...

Page 12: ...North Avenue and Schmale Road P O Box 7900 Wheaton IL 60187 7901 Tel 1 800 95 SPRAY Intl Tel 1 630 665 5000 Fax 1 888 95 SPRAY Intl Fax 1 630 260 0842 www spray com MI PW4000A Spraying Systems Co 201...

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