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ControlAir康气通 TYPE300仪表空气过滤调压阀选型目录:Type 300 Filter Regulator
The Type 300 Instrument Air Filter Regulator
is designed to provide clean, accurate
air pressure to instruments, valves, and
other automatic control equipment. This
filter regulator has been proven to provide
accurate operating characteristics under
variable conditions. Durable materials
and a standard epoxy paint finish provide
long lasting corrosion resistance in harsh
industrial environments. The Type 300 is a
quality unit that is ideal as an economical
alternative for control of process applications.

Type 300 and Type 310
Principles of Operation
Turning the adjusting screw changes the force
exerted by the range spring on the diaphragm
assembly. In equilibrium of set pressure, the
force exerted by the range spring is balanced
by the force from the output pressure acting
underneath the diaphragm assembly. An unbalanced
state between the output pressure
and the set pressure causes a corresponding
reaction in the diaphragm and supply valve
assemblies. If the output pressure rises above
the set pressure, an upward force is exerted
on the diaphragm assembly causing the relief
seat to lift and open. Excess pressure is
vented to atmosphere until equilibrium is
reached. If the output pressure drops below
the set pressure the unbalanced force of the
range spring causes a downward force on the
diaphragm assembly. The supply valve then
opens until the pressure builds up once more
to the equilibrium condition. Under forward
flow conditions, the range spring force is balanced
by the diaphragm pressure force, with
the supply valve open just enough to maintain
the required equilibrium pressure. When
high flow occurs, a specially designed aspirator
helps maintain downstream pressure and
compensates for droop.

The Type 320 Filter unit is a 40-micron
depth filter that removes dirt, moisture
and other particles from air and gas
lines. Robustly constructed of die-cast
aluminum with a baked epoxy finish, this
unit stands up in corrosive operating
conditions. This filter is an economical
alternative for air supply line applications
that don't require a pressure reducing
regulator.

Warranty
ControlAir, Inc. products are warranted to be free from defects in materials and workmanship
for a period of eighteen months from the date of sale, provided said products
are used according to ControlAir, Inc. recommended usages. ControlAir, Inc.'s liability is
limited to the repair, purchase price refund, or replacement in kind, at ControlAir, Inc.'s
sole option, of any products proved defective. ControlAir, Inc. reserves the right to discontinue
manufacture of any products or change products materials, designs or specifications
without notice. Note: ControlAir does not assume responsibility for the selection,
use, or maintenance of any product. Responsibility for the proper selection, use, and
maintenance of any ControlAir product remains solely with the purchaser and end user.

 

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