Gas Plumbing - Agilent Technologies 7820A GC Site Preparation Manual

Gas Plumbing

WA R N I N G
Two-stage regulation
Main supply
on/off valve
Main gas supply
Trap size and shape will vary by manufacturer.
Figure 3 Recommended traps and plumbing configuration from a carrier gas cylinder
7820A GC Site Preparation Guide
All compressed gas cylinders should be securely fastened to an
immovable structure or permanent wall. Compressed gases
should be stored and handled in accordance with the relevant
safety codes.
Gas cylinders should not be located in the path of heated oven
exhaust.
To avoid possible eye injury, wear eye protection when using
compressed gas.
On/off valve
Shutoff valve
Indicating oxygen trap
Big universal trap
(combination trap for moisture,
hydrocarbons, and oxygen)
• Agilent strongly recommends two-stage regulators to
eliminate pressure surges. High-quality, stainless-steel
diaphragm-type regulators are especially recommended.
• On/off valves mounted on the outlet fitting of the two-stage
regulator are not essential but are very useful. Be sure the
valves have stainless-steel, packless diaphragms.
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