Two-Stage Pressure Regulators; Pressure Regulator-Gas Supply Tubing Connections - Agilent Technologies ALS Handbuch

7890 Series GC Site Preparation

Two-stage pressure regulators

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.

Pressure regulator-gas supply tubing connections

Use PTFE tape to seal the pipe-thread connection between the pressure
regulator outlet and the fitting to which you connect the gas tubing.
Instrument grade PTFE tape (part number 0460-1266), from which volatiles
46
Two-stage regulator
Adapter to 1/8-inch female
Swagelok fitting
GC, GC/MS, and ALS Site Preparation Guide