DeVilbiss TGHV Series Service Bulletin

IMPORTANT: Before using this equip-
ment, read all Safety Precautions and
Instructions. Keep for future use.
Note
Certain air quality regulations require
no more than 10 psi pressure at the
spray gun nozzle. Follow instructions
in this Service Bulletin to maintain
maximum 10 psi at nozzle if such regu-
lations apply to your operation.
Figure 1
TGHV-635 Gravity Feed
Figure 2
TGHV-530 Pressure/
Suction Feed
DESCRIPTION
Models:
TGHV-635 Gravity Feed Spray Gun with
Stainless Steel Cup (stamped TGHV-535
on gun body)
TGHV-530 Pressure or Suction Feed Spray
Gun
The TGHV is an HVLP spray gun used for
detail, repair, shading, and highlighting
operations, and is available in either pres-
sure/suction or gravity feed. Models in-
clude the #90HV air cap, and "F" (.041 in./
1.0 mm) fluid tip.
Gravity feed model TGHV-635 includes an
8 oz. stainless steel cup.
TGHV HVLP SPRAY GUNS
SPECIFICATIONS
Gun Body: Forged Aluminum, stainless steel
fluid passages
Wetted Parts:
(TGHV-530) 300 S.S., Acetal, Polyethylene,
PTFE
Teflon®
(TGHV-635) 300 S.S., Polyethylene, Teflon®
Weight: TGHV-530 - 19 oz. (530g)
TGHV-635 - 24.4 oz. (688g)
with 8 oz. cup
Air Cap: #90 HV
Fluid Tip: F (.041", 1.0 mm)
Air inlet: 1/4" NPS(M)
Fluid Inlet: 3/8" NPS(M) - TGHV-530
1/4" BSP(M) - TGHV-635
Air Inlet Approx. 35 psi inlet = 10 psi
Press./CFM: cap pressure, 6.7 CFM
Fluid Pressure: 100 psi maximum - TGHV-530
Pattern: 1/8" to 3-1/2"
INSTALLATION
Connect air hose from a filtered, regulated
air supply to spray gun inlet connection on
gun handle.
TGHV-530 Pressure/Suction Feed: Attach
fluid hose (pressure feed) or suction cup
(suction feed) to 3/8" NPS(M) fluid inlet
connection. Tighten with a wrench.
TGHV-635 Gravity Feed: Assemble cup
(31) to 1/4" BSP(M) side inlet fitting on
gun. Tighten wing nut hand tight. Rotate
elbow and cup slightly to securely tighten.
OPERATION
This gun may be used with most
common coating and finishing mate-
rials. It is designed for use with mildly
corrosive and non-abrasive materials.
If used with highly corrosive or abra-
sive materials, frequent and thorough
cleaning will be required, and parts
will need replacing more often.
Protective coating and rust inhibi-
tors have been used to keep the gun
in good condition prior to shipment.
Before using the gun, flush it with
solvent so that these materials will be
removed from fluid passages.
Adjust inlet air pressure at the supply regu-
lator. Air pressure can also be controlled at
the gun by using the air adjusting valve
(27). Adjust pressure to the lowest setting
to maintain acceptable atomization and
minimize overspray (bounce-back). Ap-
PTFE proximately 35 psi inlet pressure (mea-
sured at gun inlet, flowing) results in 10
psi cap pressure.
Air cap pressure can be verified by using an
"air cap test kit" (see Accessories ,
page 5).
sure compliance of 10 PSI max. cap pres-
sure - this reading must be taken at the
spray gun handle inlet fitting.
- cap number must correspond with baffle
number to assure 10 PSI cap pressure.
( Operation continued on page 5)
Note
Figure 3 Baffle
Note
SERVICE BULLETIN
SB-2-192-F
Replaces SB-2-192-E
Repair Kit KK-5048
Note
The baffle assembly and #90HV air cap
supplied with the TGHV are designed to
limit air cap pressure to 10 psi, with
approximately 35 psi gun inlet pres-
sure. Using other air caps may affect
spray results, and result in improper air
cap pressures. See Fig. 3.
1 Maximum air pressure required to as-
2 Air cap number located on face of cap
2
1