Two-Stage Pressure Regulators; Pressure Regulator-Gas Supply Tubing Connections - Agilent Technologies 7820A GC Site Preparation Manual

Two-stage pressure regulators

Pressure regulator-gas supply tubing connections

7820A GC Site Preparation Guide
To eliminate pressure surges, use a two-stage regulator with
each gas tank. Stainless steel, diaphragm-type regulators are
recommended.
The type of regulator you use depends on the gas type and
supplier. The Agilent catalog for consumables and supplies
contains information to help you identify the correct regulator,
as determined by the Compressed Gas Association (CGA).
Agilent Technologies offers pressure-regulator kits that contain
all the materials needed to install regulators properly.
®
Use Teflon tape to seal the pipe-thread connection between the
pressure regulator outlet and the fitting to which you connect
the gas tubing. Instrument grade Teflon tape (part number
0460-1266), from which volatiles have been removed, is
recommended for all fittings. Do not use pipe dope to seal the
threads; it contains volatile materials that will contaminate the
tubing.
7820A GC Site Preparation
2 stage regulator
Adapter to 1/8-inch female
Swagelok fitting
1
21