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DEVILBISS
SERVICE BULLETIN
SB-21-043-D
The Right Way To Finish"
Replaces SB-21-043-C
PT-500-WB, 510-WB, 511-WB, 520-WB and
521-WB, 2-1/2 GALLON PRESSURE TANK (NON A.S.M.E.)
WATERBORNE COMPATIBLE
IMPORTANT:
Read and follow all
instructions and SAFETY PRECAU-
TIONS before using this equipment.
Retain tor future reference.
DESCRIPTION
Model PT pressure tanks are designed as a
pressure container to supply liquid material at a
constant preset pressure up to a maximum of 80
PSL All models include stainless steel wetted
parts, a sta'1nless steel Jld and polyethylene
liner, allowing use with waterborne materials.
All models are tor light to medium duty use only.
Models:
PT~500-WB:
No regulation, airinleVoutlet, fluid
outlet, safety valve
PT~510-WB:
Single regulation (fluid), air inlet!
outlet, fluid outlet, safety valve
PT-511-WB: Dual regulation (air and fluid), oth-
erwise same as PT-5'10-WB
PT-520~WB:
Single regulation (fluid), air driven
agitator assembly, fluid outlet, safety valve
PT-521-WB: Dual regulation (airandf!uid), oth-
erwise same as
PT -520-WB
WARNING
I
Halogenated hydrocarbon solvents-
for example: 1,1, 1- trichloroet-
hane and methylene chloride - can
chemically react with aluminum,
zinc plating or galvanized materi-
als. If this reaction occurs within
an enclosed container such as this
pressure feed tank, the tank may
explode. Do not use halogenated
solvents with PT type pressure
tanks. Any contact of these mate-
rials and halogenated solvents
within the tank must be avoided,
Do not use PT {Non-ASME) pres-
sure tanks· over 15 PSiwhen using
flammable materials.
NFPA-33-
95, Chapter 6-5.5 specifies only
ASME code tanks can be used with
flammable materials at pressures
greater than 15 PSI.
WARNING
I
Air pressure loads that are· higher
than design loads, or changes to
the pressure feed tank can cause
the tank to rupture or explode.
• A safety valve protects the tank
from over pressurization. During
each use pull the ring on the safety
valve to make sure it operates
freely and relieves air pressure. If
the valve is stuck, does not operate
freely, or does not relieve air pres-
sure, it must be replaced, Do not
eliminate, make adjustments or sub-
stitutions to this valve.
• Changes to the air tank will
weaken it. Never drill into, weld or
change the tank in any way.
• The maximum working pressure
of this tank is 80 psi,
SPECIFICATIONS
Tank Size: 2-1/2 gal (actual capacity is 2. 76
gal)
Height:
9-9/16", (10-1/2" to top of lid)
Maximum Working Pressure (MWP): 80 psi
Air Motor Consumption: 3-6 CFM at 60 psi
Maximum Agitator Air Inlet Pressure:
100
psi
Air Inlet Size:
1 /4" NPS (M)
Fluid Outlet Size:
3/8" NPS (M}
Tank Net Weight:
PT-500-WB
PT-510-WB
PT"511-WB
PT-520-WB
PT-521-WB
20 lbs.
22-1/2 lbs.
24
lbs.
27
lbs.
28-1/2 lbs.
MATERIALS OF CONSTRUCTION -
WETTED PARTS
316 S.S. - Fluid Tube, lid bushing, outlet
elbow and fitting;
303
S.S. - Agitator shaft
(agitated models); molded nylon propeller
(agitated models); polyethylene liner.
NON"WETTED PARTS:
Zinc plated carbon steel tank; #304 stainless
steel, electro- polished
lid.
PT-418 AIR MOTOR DRIVEN AGITATOR
The agitator utilizes an air driven motor to
turn the agitator shaft to which
a
propeller is
attached. The rotation of the propeller mixes
materials which have a tendency to separate
or settle quickly. Material agitation may be
performed at the same time material is being
sprayed without any adverse effect. The air
motor is powerful and smooth running. An
air adjusting valve is included to control the
speed of the agitator. The air motor requires
low air consumption, approximately 3-6
C.F.M. at 60 P.S,I. (Max. input air pressure
100 P.S.I.I
INSTAllATION
Mix and prepare material to be used accord-
ing to manufacturer's instructions. Strain
material through
a
fine mesh screen (60 or
90
mesh) to remove all foreign matter which
is likely to enter and clog material passages.
1.
Always relieve all air pressure in the
tank. Pull the ring on the safety valve
until pressure bleeds down.
2.
Loosen thumb screws, tip lid clamps
back and remove Hd assembly.
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