444A Sovereign Court
Ballwin, MO 63011
Phone (636) 227-3333
Fax (636) 227-3319
customerservice@falconflow.com
Specializing in instrumentation and process control components
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Gauges
Please click on the link Below for More Information:
SOLID FRONT PROCESS PRESSURE GAUGES (DRY OR LIQUID FILL)
Solid front, blowout back, field fillable model, designed for the rugged applications of
the process and power industries which must withstand the effects of corrosive
atmosphere, vibration or severe pulsations.

Applications include food processing, refrigeration, storage tanks, OEMs, and high
temperature.
STAINLESS STEEL PRESSURE GAUGES (DRY OR LIQUID FILL)
MODEL 30
1% STAINLESS STEEL PRESSURE GAUGES (DRY OR LIQUID FILL)
Designed for heavy duty service in process and industrial applications such as
chemical, petrochemical, power, food processing and biotechnology. Click here to view
model 30 specifications and dimensions.

MODEL 31
1% SOLID FRONT STAINLESS STEEL PRESSURE GAUGES (DRY OR LIQUID FILL)
Solid front, blowout back, field fillable model, designed for the rugged applications of
the process and power industries. Click here to view model 31 specifications and
dimensions.
INDUSTRIAL/HYDRAULIC PRESSURE GAUGES - DRY OR LIQUID FILLED
Tel-Tru's Model 33 pressure gauge is typically used in OEM applications.
1-1/2% LOW PRESSURE GAUGES
Designed for use where pressure of less than 10 psi is to be measured.
METAL CASE UTILITY PRESSURE GAUGES
Designed for general commercial and industrial markets to measure air, water, oil, gas
or any medium not corrosive to brass.
LOW PRESSURE DIAPHRAGM-ACTUATED UTILITY PRESSURE GAUGES
Designed for use with air, gas, oil and water or any media not corrosive to brass or
bronze and where pressure of less than 10 psi is to be measured.
MECHANICAL CONTRACTOR PRESSURE GAUGES
A utility gauge used with any liquid or gas not corrosive to bronze. Typically used for
HVAC applications.
TEL-TRU Pressure Products

Rugged features make the line of stainless steel gauges a top choice for process, power, hydraulic, and OEM
requirements. A full selection of dial sizes, pressure ranges, and case configurations are available.  All Tel-Tru
pressure gauges meet ASME B40.1.
IMPORTANT INFORMATION TO CONSIDER WHEN SELECTING A PRESSURE GAUGE

All gauge components should be selected based upon knowing the pressure, temperature, and media to
prevent misapplication. Improper installation can damage the gauge and/or cause failure resulting in personal
injury or property damage. The information in this catalog is offered as a guide to assist in the proper selection
of pressure gauges.

The operating conditions of a pressure gauge must always be considered. Pressure gauges should be
protected against sudden pressure changes, temperature changes, pulsation and/or mechanical vibration.
The proper application of accessories will solve most problems.

Pressure gauges should not be exposed to pressures greater than maximum dial reading. It is recommended
that the maximum working pressure be in the middle one-third of the scale range when the pressure being
measured is steady pressure. For fluctuating pressures the maximum working pressure should be no more
than one-third of the full scale range. Compound ranges are recommended when the pressure to be measured
will vary between vacuum and above atmospheric pressures.

Since the measuring element of the pressure gauge may be directly exposed to the measuring media,
complete information about the media exposure of the pressure gauge should be obtained to select the proper
gauge materials. If the media is corrosive or would solidify in the pressure gauge, a diaphragm seal protector
should be used.

The ambient atmosphere in which the pressure gauge is to be installed will have a direct effect on the use, life,
and accuracy of the instrument. The atmospheric condition can attack inner gauge components or allow dirt to
impair the operation of the pressure gauge.

We suggest that users of pressure gauges refer to American National Standard ANSI B40.1 entitled Gauges,
Pressure and Vacuum Indicating Dial Type - Elastic Element for guidance in pressure gauge selection. This
document may be obtained from the American Society of Mechanical Engineers (ASME), United Engineering
Center, 345 East 42nd Street, New York, NY 10017.