Accessory Repairs Valve Repair

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Milton Garrison
5 years ago
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In 2010 we changed the vendor on our spray guns used on the Hydro

The spray guns look similar & are directly interchangeable; however

This document will help you identify the type of spray gun you have

The older style Italian version of the 100010 spray gun has the

Instructions proceed to Section II The newer style China version of

1 In 2010 we changed the vendor on our spray guns used on the Hydro Force sprayers, SX-12 & SX-15. The spray guns look similar & are directly interchangeable; however they do require different repair parts. This document will help you identify the type of spray gun you have and which repair parts you need to order. The older style Italian version of the spray gun has the model number MV960 embossed on the side of the gun body For Repair Instructions proceed to Section II The newer style China version of the spray gun has the word CHINA embossed on the lower end of the gun handle. For Repair Instructions proceed to Section I Technical Procedures Page #1

Section I: Repairing the 100010 Gunjet New Style To service the New

(NA0833) or the High Pressure Hose Assembly (NA0828) or Quick Connect

Remove the seven screws holding the side plate on the Gunjet Body and

Use a 15mm - 6 point Socket wrench to remove the from the top of the

or pitting. Replace as needed. Replace the o-ring. Replace as needed. Remove from and replace seals as needed.

2 Section I: Repairing the Gunjet New Style To service the New Style Gunjet you do not have to remove the Sprayer Extension (NA0833) or the High Pressure Hose Assembly (NA0828) or Quick Connect (BR335) unless you are replacing the valve. Remove the seven screws holding the side plate on the Gunjet Body and remove the side plate to expose the valve. Use a 15mm - 6 point Socket wrench to remove the from the top of the Valve (NA033). Then remove the and from the valve. Then remove the, and. Valve NA033 Gunjet Body Stainless Examine the,, and for signs of wear or pitting. Replace as needed. Replace the o-ring. Replace as needed. Remove from and replace seals as needed. If the valve body, cap or seat is worn or damaged, replace the whole valve (NA033). O-ring O-ring Stainless O-ring Technical Procedures Page #2 Back-up Ring

Re-assemble the Valve using new parts as needed. Repair Kit (NA033A) contains commonly used repair parts for the NA033 Valve. Place the into the and set the on top of the.

3 Re-assemble the Valve using new parts as needed. Repair Kit (NA033A) contains commonly used repair parts for the NA033 Valve. Place the into the and set the on top of the. Place the with the curved seating surface against the. Apply Loctite 242 or similar thread sealant on the threads. With the and Seal Rings in place, thread the into the and tighten. Stainless Place the Valve (Repaired or New) into the Gunjet Frame and replace the Side Plate. Secure the Side Plate with the seven screws. Test the Gunjet and repeat repair procedure, replace the valve or replace the Gunjet if problems persists. Stainless Repair Kit NA033A O-ring O-ring Back-up Ring O-ring Technical Procedures Page #3

Style Gunjet 100010 you do not have to remove the Sprayer Extension (NA0833) or the High

Remove the seven screws holding the side plate on the Gunjet Body and remove the side plate

Use a 15mm - 6 point Socket wrench to remove the from the top of the Valve (NA031).

Sprayer Extension NA0833 Valve NA031 High Pressure Hose Assembly NA0828 Gunjet Body

4 Valve Repair Accessory Repairs Section II Repairing the Gunjet Old Style To service the Old Style Gunjet you do not have to remove the Sprayer Extension (NA0833) or the High Pressure Hose Assembly (NA0828) unless you are replacing the valve. Remove the seven screws holding the side plate on the Gunjet Body and remove the side plate to expose the valve. Use a 15mm - 6 point Socket wrench to remove the from the top of the Valve (NA031). Then remove the and from the valve. Then remove the, and. Sprayer Extension NA0833 Valve NA031 High Pressure Hose Assembly NA0828 Gunjet Body Stainless Examine the, and for signs of wear or pitting. Replace as needed. Replace the o-ring. Replace as needed. Remove from and replace seals as needed. If the valve body or seat is worn or damaged, replace the whole valve (NA031). O-ring O-ring Technical Procedures Back-up Ring O-ring Page #4

Re-assemble the Valve using new parts as needed. Repair Kit (NA031A) contains commonly used repair parts for the NA031 Valve. Place the into the and set the on top of the.

5 Re-assemble the Valve using new parts as needed. Repair Kit (NA031A) contains commonly used repair parts for the NA031 Valve. Place the into the and set the on top of the. Place the with the curved seating surface against the. Apply Loctite 242 or similar thread sealant on the threads. With the and Seal Rings in place, thread the into the and tighten. Place the Valve (Repaired or New) into the Gunjet Frame and replace the Side Plate. Secure the Side Plate with the seven screws. Test the Gunjet and repeat repair procedure, replace the valve or replace the Gunjet if problems persists. O-ring Repair Kit NA031A Stainless O-ring O-ring Back-up Ring Technical Procedures Page #5

Quick Connects are used on the AS08 & AS08R

an o-ring in the female quick connect (BR337)

pressure from sprayer before separating the

Male Quick Connect - BR335 1/4 Female NPT

6 Quick Connects are used on the AS08 & AS08R Hydro Force Sprayers to create a swivel connection between the gun and hose. If the quick connects begin to leak there is an o-ring in the female quick connect (BR337) which can be replaced with a new o-ring (NA0873). Turn off or disconnect solution supply pressure from sprayer before separating the quick connects. Male Quick Connect - BR335 1/4 Female NPT Female Quick Connect - BR337 1/4 Male NPT NEVER SEPARATE QUICK CONNECT WHEN SPRAYER SOLUTION LINE IS PRESSURIZED Viton O-ring NA0873 Technical Procedures Page #6

GUNJET NUMBER AA143-AL-*-10 A C A C

GUNJET NUMBER AA143-AL-*-10 A C A C For spot spraying, tree spraying, livestock spraying and power washing at pressures from 2 to 55 bar. To operate spray gun, handle is rotated 360 from shutoff to maximum flow position. As handle is turned,