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GC ACCESSORIES | GAS MANAGEMENT
Gas Pressure System Accessories
Switching pressure: 200 psig/170 psig (1,379/1,172 kPa)
Inlet connections: flexible SS pigtails (36")
Line regulator: 0 to 150 psig (0–1,034 kPa)
Automatic Switchover System for Noncorrosive Gases (Critical Purity)
High-purity automatic switchover systems provide a continuous supply of high-purity
gas to the laboratory, process, or instrument to allow you to replace a depleted gas
source without interruption in the gas supply. Continuous gas supply is achieved by
setting the two regulators at slightly different pressures and discharging one side of the
system at a time. These models include flexible, all-stainless-steel pigtails with armor
casing. The CGA connection on each pigtail has a check valve in the gland to prevent
contamination and minimize purging requirements.
Brass Automatic Switchover System with Line Regulator qty. cat.# price
CGA 580 (N 2, He, Ar) ea. 20668580
CGA 350 (H 2, P5) ea. 20668350
CGA 590 (Air) ea. 20668590
Stainless Steel Automatic Switchover System with Line Regulator qty. cat.# price
CGA 580 (N 2, He, Ar) ea. 21593580
*Pressure regulator not included. Order separately.
Protocol Station
The protocol station is designed for convenient wall mounting of high-purity gas regu-
lators. Wall mounting provides ease of use, prevents gas regulator damage, and im-
proves safety. Either chrome-plated brass or 316 stainless steel option is complete with
a 3-foot, flexible, all-stainless-steel pigtail with armor casing. The CGA connection on
the pigtail has an integral check valve in the gland to prevent contamination during
cylinder changeout.
Chrome-Plated Brass Protocol Station* qty. cat.# price
CGA 580 (N 2, He, Ar) ea. 21347
CGA 350 (H 2, P5) ea. 21348
CGA 590 (Air) ea. 21349
Stainless Steel Protocol Station* qty. cat.# price
CGA 580 (N 2, He, Ar) ea. 21327
20668580
21347
Do you have a technical question? Restek’s Technical Service group has answers! Drawing from our
extensive libraries of technical information and many years of collective chromatography experience,
the experts in Technical Service can help you from set-up to method development.
Contact us:
For quick answers to commonly asked questions any time of the day, visit
or contact us directly:
Technical Service
In the U.S.: Phone: 1-800-356-1688, ext. 4 • e-mail:
Outside the U.S.: Contact International Technical Service at
or find a local distributor at