model 100 pages

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Model 10 Pneumatic Precision Regulator
Features

Model
10

• Control sensitivity of 1/8" water column
allows use in precision processes.

• Pressure balanced supply valve prevents
supply pressure changes from affecting the
setpoint.
• Optional check valve permits dumping of
downstream pressure when supply is
opened to atmosphere.

• Separate control chamber isolates the
diaphragm from the main flow to eliminate
hunting and buzzing.

• An aspirator tube compensates
downstream pressure droop under flow
conditions.
The Model 10 is designed for
applications that require high
capacity and accurate process
control. A poppet valve which is
balanced by utilizing a rolling
diaphragm, insures a constant
output pressure even during wide
supply pressure variations. Stability
of regulated pressure is maintained
under varying flow conditions
through the use of an aspirator tube
which adjusts the air supply in
accordance with the flow velocity.

Options

Low Bleed (B)
Low Flow (L)
Check Valve (C)
Non-Relieving (N)

• Canadian Registration Number (CRN)
certification for all territories and provinces.

• NO Yellow Metals available for harsh
media.

Operating Principles

The Model 10 Series regulator use the
force balance principal to control the
movement of the Valve Assembly that
controls the output pressure. When the
regulator is adjusted for a specific set
point, the downward force of the Positive
Bias Spring moves the Diaphragm
Assembly downward. The Supply Valve
opens and allows air to pass to the
Outlet Port. As the set point is reached,
the downward force exerted by the
Positive Bias Spring is balanced by the
force of the downstream pressure that
acts on the Diaphragm Assembly. The
resultant force moves the Supply Valve
upward to reduce the flow of air to the
Outlet Port.
Outlet pressure is maintained as a result of
balance between forces acting on the top
and bottom of the Diaphragm Assembly.
Option that reduces the bleed rate below that of a standard unit and can be used when
bleed or consumption is an issue. A reduction in sensitivity will result from the lower bleed
rate.
Option that increases the bleed rate above that of a standard unit to improve response in
low flow applications.
Internal check valve that permits rapid dumping of downstream pressure through the supply line and exhaust port when supply pressure is removed.
Option that includes no relief function or continuous bleed. Units with this feature must
operate with a continuous downstream flow to regulate properly and prevent the output
from equalizing with supply line pressure.

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800-334-8422
www.fairchildproducts.com