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IMPORTANT:  Before using this equipment,
read all safety precautions and instructions.
Keep for future use.

DESCRIPTION

The SRI is a small gravity fed spray gun
designed for spraying spot repairs and small
areas. The gun can spray from a small
round to a 9" fan pattern (according to
setup). This product is suitable for use with
both water-based and solvent-based coating
materials.

SPECIFICATIONS

Air Supply
Connection:

Universal 1/4" BSP
and NPS (M)

Maximum Static
Air Inlet Pressure: P

= 7 bar (100 psi)

Nominal Gun Air
Inlet Pressure (with
Gun Triggered):

2 bar (29 psi)

Gun Weight (with
4 oz. Cup and Lid): 390g (13.76 oz.)

MATERIALS OF CONSTRUCTION
FOR WETTED PARTS

Gun Body:

Anodized Aluminum

Nozzle:

303 Stainless Steel

Needle:

303 Stainless Steel

Cups:

Nylon and Aluminum

Cup Lid:

Polypropylene

This gun was manufactured  to provide a
maximum transfer efficiency by limiting air
cap pressure to 10 psi 

(complies with rules

issued by SCAQMD and other air quality
authorities).

This gun will produce approximately 10
psi air cap pressure at 29 psi gun inlet
pressure.  An air cap test kit is available
(see 

Accessories

) which can be utilized

to set the exact air cap presssure.
Air consumption for the SRI is 5.0 SCFM
at 10 psi cap pressure.

This gun comes with either an 8 oz. or 4 oz.
aluminum gravity cup with a polypropylene
lid plus a 4 oz. nylon disposable cup with
a polypropylene lid.

SERVICE  BULLETIN

SB-2-511-A

Replaces SB-2-511
Repair Kit SRI-426

SRi HIGH VOLUME LOW PRESSURE

GRAVITY FEED SPOT REPAIR SPRAY GUN

NOTE

This gun includes 303 series
stainless steel fluid tip and
needle.  This gun 

should not

 be

used with chlorinated solvent
materials. 

See page 2 for poten-

tial hazards.

Important: 

 This gun may be used with most

common coating and finishing materials. It
is designed for use with mildly corrosive
and non-abrasive materials. If used with
other high corrosive or abrasive materials,
it must be expected that frequent and thor-
ough cleaning will be required and the ne-
cessity for replacement of parts will be in-
creased.

INSTALLATION

For maximum transfer efficiency,

 

do not

use more pressure than is necessary to
atomize the material being applied.

1.

Connect the gun to a clean, moisture
and oil free air supply. Fully open air
flow valve (20). Install an air cap test kit
over tip.  When gun is triggered on,
adjust regulated pressure to desired
setting to provide a maximum of 10 psi
at the air cap.  

Do not use more pres-

sure than is necessary to atomize the
material being applied

 

Excess pres-

sure will create additional overspray
and reduce transfer efficiency.

NOTE

If quick connects are required, use
only high flow quick connects ap-
proved for HVLP use such as DeVil-
biss HC-4419 and HC-4719. Other
types will not flow enough air for
proper gun operation.

NOTE

If an air adjusting valve is used at the
gun inlet, use DeVilbiss Model HAV-
500 or HAV-501. Some competitive
adjusting valves have significant
pressure drop that can adversely
affect spray performance. Models
HAV-500 and HAV-501 have
minimal pressure drop, which is
important for HVLP spraying.

2.

Attach the gravity feed cup to the ma-
terial inlet.

NOTE

Protective coating and rust inhibi-
tors have been used to keep the
gun in good condition prior to ship-
ment. Before using the gun, flush
it with solvents so that these ma-
terials will be removed from fluid
passages.

OPERATION

Mix, prepare and strain the material to be
sprayed according to the paint maufacturer's
instructions.

Strain material through a 60 or 90 mesh
screen.

1.

Fill the gravity feed cup with the mate-
rial. Do not overfill. Make sure that the
cup lid vent hole is clear.

2.

Open the spreader adjustment valve
(6) (Fan) by turning the valve stem
counterclockwise.

3.

Close the fluid needle adjusting screw
(12) by turning clockwise.

4.

Turn on air supply and set gun inlet
pressure to lowest recommended pres-
sure for material being sprayed. Best
atomization will occur with 10 psig air
cap pressure. However, some materi-
als can be sprayed at lower pressures,
improving transfer efficiency.

5.

Spray a test area by turning fluid needle
adjusting screw (12) counterclockwise
until a full coat is obtained.

If the finish is too sandy and dry, the
material flow may be too low for the
atomization air pressure being used.

If the finish sags, there is too much material
flowing for the atomization air pressure
being used.

Both of the above can be corrected by
increasing or decreasing the atomization air
pressure or the material flow. Pattern width
can be altered by turning spreader adjust-
ment valve (6), either clockwise to decrease
the width or counterclockwise to increase
the width.

See Spray Gun Guide, SB-2-001 latest
revision, for details concerning setup of
spray guns.

Содержание SRI-630G

Страница 1: ...20 Install an air cap test kit over tip When gun is triggered on adjust regulated pressure to desired setting to provide a maximum of 10 psi at the air cap Do not use more pres sure than is necessary to atomize the material being applied Excess pres sure will create additional overspray and reduce transfer efficiency NOTE If quick connects are required use only high flow quick connects ap proved f...

Страница 2: ...xcessive duration of the activity 5 Tool vibration 6 Repeated pressure on a body part 7 Working in cold temperatures CTD s can also be caused by such activities as sewing golf tennis and bowling to name a few Adequate exhaust must be provided to keep air free of accumulations of flammable vapors Smoking must never be allowed in the spray area Fire extinguishing equipment must be present in the spr...

Страница 3: ...le replace both at the same time Using worn parts can cause fluid leakage See Chart 1 It is recommended that the fluid tip seal 5 is replaced whenever the fluid tip is removed Also replace the needle packing at this time Lightly lubricate the threads of the fluid tip before reassembling Torque to 6 7 ft lbs Do not over tighten the fluid tip To prevent damage to fluid tip 4 or fluid needle 10 be su...

Страница 4: ... Part No Description Req 18 SRI 9 Trigger SRI 1 19 SRI 412 Trigger Stud Screw Kit 1 20 SRI 402 Air Control Valve 1 21 SRI 40 Air Inlet Adaptor 1 22 SRI 478 K12 Cup Lid Kit Nylon Cup 1 4 ea color 12 23 54 4458 Cup Lid Kit 1 4 oz Aluminum Cup Kit of 1 ea Cup Lid 24 54 4539 Lid Kit 1 Kit of 3 for 4 oz Aluminum Cup 25 Wrench SRI 1 26 SRI 51 K12 Funnel Kit 12 1 27 81 381 Cup Lid Kit 1 8 oz Aluminum Cup...

Страница 5: ...high for atomization air Material flow exceeds air cap s capacity Spreader adjustment valve set too low Atomizing pressure too low Material too thick Atomization air pressure too high Fluid flow too low Spreader adjusting valve set too high Loose or damaged fluid tip seat Baffle seal installed incorrectly Material level too low Container tipped too far Obstruction in fluid passage Dry or loose flu...

Страница 6: ...ick Connects For HVLP Guns Air High Flow Type HC 4720 Coupler 1 4 NPT F HC 1166 Stem 1 4 NPT M HC 4419 Stem 1 4 NPT F HC 4719 Coupler 1 4 NPT M NPS M KK 5060 Air Cap Cleaning Kit Consistsof 2brushes 1wirepick Helpskeep air cap clean and per forming properly 192218 Scrubs Hand Cleaner Towels Spray Gun Lube SSL 10 2 oz bottle Compatible with all paint materials contains no silicone or petroleum dist...

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