Specifications

8. When is an agitator used in a
pressure feed tank?
When the material being used has
filler or pigment that must be kept
in motion to keep its particles in
proper suspension. An agitator can
be hand, air or electrically driven.
9. What is a single regulated
tank?
This is a pressure feed tank with
one air regulator controlling only
the pressure on the material in the
tank (see figure 4).
Figure 4 - Single Regulated Tank
10. What is a double regulated
tank?
This is a pressure feed tank
equipped with two air regulators
(see figure 5).
One provides regulation for the air
pressure on the material in the tank
(thereby controlling fluid flow). The
other controls atomization air
pressure to the spray gun.
Figure 5 - Double Regulated Tank
11. What are code and non-code
pressure tanks?
Code tanks are manufactured to
rigid standards as specified by the
American Society of Mechanical
Engineers. (ASME) Each step of
manufacture is closely controlled,
and welding of the shell is certified.
Code tanks are designed to
withstand pressures up to 110 psi.
Non-code tanks are normally
restricted to 3 gallons in size or
less. Due to the type of
construction, non-code tanks are
rated at 80 psi or less. Regulations
may restrict the type of materials
and pressures used with a non-
code pressure tank.
12. What materials are used to
construct pressure feed tanks?
The smaller, non-code, light-duty
tanks are made of plated steel and
have lower inlet pressure
restrictions.
The heavy-duty, ASME-code tanks
are made of galvanized or 300
series stainless steel. They also
have plated or stainless steel lids
with forged steel clamps.
When abrasive or corrosive
materials are being sprayed, the
tank shell is coated or lined with a
special material, or a container
insert is used.
13. What are container liners?
They are inserts that are placed
inside the tank to hold the material,
keeping it from direct contact with
the tank walls. They are made of
disposable polyethylene.
Using liners reduces tank cleaning
time and makes color changeover
easier.
14. When would you use a
bottom outlet tank?
1) When you are using very viscous
materials.
2) When continuous, steady
pressure is required, such as when
feeding plural component
proportioning equipment.
3) When you wish to use all the
material in the tank and you are not
using an insert.
15. What would I use if I have
difficulty accurately setting lower
fluid pressures?
An extra-sensitive regulator is
available for use with lower fluid
flow and/or lower viscosity
materials where precise control is
needed.
3. Material Containers (Cont’d)
17