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308 Series Regulator

Electrically-heated, single stage regulator for carbon dioxide and nitrous oxide laboratory applications
3083331-01-320 shown

The 308 Series electrically heated regulator provides primary pressure regulation of high flows of carbon dioxide or nitrous oxide in critical laboratory applications. As carbon dioxide or nitrous oxide passes through the regulator seat, dry ice can form if the flow is too high, causing the regulator to freeze up. The 308 regulator has an integral heating system consisting of three heating cartridges, a primary thermostat for automatic temperature control, and a secondary safety thermostat cutout. This system directly heats the regulator seat to mitigate ice buildup and prevent freeze-up problems. Available with a variety of options installed at the factory, the regulator may be configured as a single station manifold with or without purge, low-pressure alarm, or multiple inlets.

  • Three 50-watt heaters maintain gas flows up to 350 SCFH (165 LPM)
  • NEMA 4 housing ensures safe use in indoor or outdoor environments
  • 316L stainless steel diaphragm prevents inboard diffusion
  • CAPSULE® seat design features integral 360° filtration
  • Low wetted surface area minimizes purge requirements
  • Spectometric helium leak check verifies leak integrity
  • Max inlet pressure (bare body): 3000 PSIG (210 BAR)
  • Body: Chrome-plated brass barstock
  • Bonnet: Chrome-plated brass barstock
  • Gauges: 2 in (50 mm) diameter plated case
  • Seat: PTFE
  • Filter: 10-micron sintered bronze
  • Diaphragm: 316L stainless steel
  • Cv: 0.1
  • Helium leak integrity: 1 x 10⁻⁸ scc/sec
  • Electrical housing: NEMA 4
  • Temperature range (thermostat): 95°F to 120°F (35°C to 49°C)
  • Heaters: 3 @ 50 watts each (110 or 220 VAC)
  • Internal seals: PTFE
  • Ports (bare body): 1/4 in FNPT
  • Conformances: Cleanliness meets or exceeds CGA G-4.1; PED 2014/68/EU; CE marked (220-volt models only); ANSI/ASME B40.1; CRN OH5216
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Document
Language
ID Number
Revision
308 Series Regulators Catalog Page
English
RS308S
AG
Regulators Installation and Operation
English, Spanish, French
ADI2062
M
308 Series Heated Regulators Installation and Operation
English
ADI3005
D
CRN File OH5216
English
CRNOH5216
26

WARNING: This product can expose you to chemicals including Lead, Chromium, Nickel, and 1-3 Butadiene, which are known to the state of California to cause cancer, birth defects, or other reproductive harm. And, this product can expose you to chemicals including Bisphenol A (BPA) which is known to the State of California to cause female reproductive harm. For more information go to www. PSWarnings.ca.gov.

CAPSULE® is a registered trademark of Controls Corporation of America
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