CONCOA 483 Series Regulator
Four-Port, Brass Barstock, High Flow Pipeline Regulator for High Purity Inert Gas Applications
The CONCOA 483 Series regulator is designed for high flow inert gas applications, including bulk gas distribution, high purity chamber pressurization, and liquefied hydrocarbon analysis. Its internal pressure equalization minimizes delivery pressure variations typical in pipeline systems. Rated to full cylinder pressure, the 483 Series ensures safe operation even in the event of primary pressure control failure.
Features
Balanced stem seat design maintains constant delivery pressure at high flows
Rear panel mount simplifies installation
Pipe-away relief valve safely vents exhaust gases
Spectrometric helium leak check confirms leak integrity
Specifications
Max inlet pressure (bare body): 3000 PSIG (210 BAR)
Body: Brass barstock
Bonnet: Chrome-plated, die-cast zinc
Gauge: 2 in (50 mm) diameter brass
Seat: PCTFE
Filter: 40‑micron 316L stainless steel mesh
Temperature range: -40°F to 140°F (-40°C to 60°C)
Diaphragm: 316L stainless steel
Cv: 1.0
Helium leak integrity: 1×10⁻⁸ scc/sec
Internal seals: PTFE
Ports (bare body): 1/2 in FNPT (inlet/outlet); 1/4 in FNPT (gauge/relief valve)
Conformances: CGA G‑4.1, ANSI/ASME B40.1, PED 2014/68/EU, CRN OH5216
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Product Specifications
Sizes Available: 3/4", 1", 1.1/4", 1.1/2", 2" Connections: Screwed BSPP Materials: Stainless Steel (69.2) Disk Material: Viton Joints & Seals: Suitable for Liquids Set Pressure Range: 0.3 to 5.7 Barg (depending on size) Temperature Range: (69.2) -60 to +130°C, (69.3) -10 to +130°C Design Compliance: TUV Certified Important Note: The Brass variant (69.3) is no longer available.
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Flowstar (UK) Ltd
Wiltshire Road, Kingston-upon-Hull, East Riding of Yorkshire, HU4 6PA, United Kingdom
Flowstar (UK) Ltd is a leading global supplier of safety, relief, and reducing valves. With strong partnerships across major manufacturers, we deliver precise, reliable valve solutions tailored to your needs. Email enquiries to sales@flowstar.co.uk or call us on +44 (0)1482 601030.