CONCOA 325 Series Regulator

Chrome-Plated Brass Barstock, Single Stage Cylinder Regulator for Inert Medical Laboratory Gas Applications

The CONCOA 305 Series regulator is designed for medical laboratory use. It provides point-of-use pressure control for gases in cylinders with pressures below 500 PSIG (35 BAR), or primary pressure control for inert gas applications that can tolerate minor outlet pressure fluctuations due to cylinder depletion. Like most CONCOA regulators, the 305 Series is rated for maximum inlet pressures of 3000 PSIG (210 BAR) or higher, depending on configuration.

The regulator can include a standard 2–15 LPM flow gauge calibrated for carbon dioxide, or a custom 2–15 LPM calibration for any non-corrosive gas or gas mixture. CONCOA uses a thermal mass flowmeter to size the outlet orifice according to the specific gas and desired flow. While the 305 Series features medical-standard inlet and outlet connections, it is not intended for therapeutic use in humans. For applications requiring constant outlet pressure or flow, CONCOA recommends the 315 Series two-stage regulator.

Features

• 316L stainless steel diaphragm prevents inboard diffusion

• CAPSULE® seat design with integral 360° filtration

• Wide pressure delivery range: 0–15 PSIG (0–2 BAR) to 0–500 PSIG (0–35 BAR)

• Optional 2–15 LPM flow gauge calibrated for carbon dioxide or a user-specified gas

• Low wetted surface area reduces purge requirements

Specifications

• Max inlet pressure (bare body): 3000 PSIG (210 BAR)

• Body: Chrome-plated brass barstock

• Bonnet: Chrome-plated, die-cast zinc

• Gauges: 2 in (50 mm) diameter plated case

• Seat: PTFE

• Filter: 10-micron sintered bronze

• Temperature range: -40°F to 140°F (-40°C to 60°C)

• Diaphragm: 316L stainless steel

• Cv: 0.1

• Helium leak integrity: 1×10⁻⁸ scc/sec

• Internal seals: PTFE

• Ports (bare body): 1/4 in FNPT

• Conformances: CGA G-4.1; PED 2014/68/EU; ANSI/ASME B40.1; CRN OH5216

**Product Specification** **Sizes Available:** 1/8", 1/4" **Connections:** - Tri-Clamp (ASME BPE or DIN 32676) - Male Union (DIN 11851 / 11864-1) - Varivent Flange (DIN 11864-2) - Flanged PN16 or ANSI 150 R/F - Screwed to ISO 228 **Materials:** - Stainless Steel 316L or 304 - Disk Options: EPDM, PTFE (FDA Approved), AF100, or Viton - Joints & Seals: Diaphragm materials include EPDM, PTFE (FDA Approved), AF100, or Viton **Suitable Medium:** Steam, Gases, and Liquids **Maximum Inlet Pressure:** 16 Barg **Outlet Pressure Range:** 1 to 7.7 Barg --- Explore our high-quality stainless steel valves, meticulously crafted to meet your industrial needs. Perfect for applications involving steam, gases, and liquids, these valves are designed to ensure reliability and efficiency. With multiple connection options and durable material choices, our valves are the ideal solution for both new installations and retrofitting existing systems. Trust in our engineering expertise to provide the best functionality and performance in any operating environment.

Please note that Auld Valves Ltd has ceased trading. However, we encourage you to contact us as we may offer alternatives within our product range.

The Auld Standfast Reducing Valve provides precise self-operated pressure control with an accuracy of ±1%. This reliable valve is suitable for steam, gas, and liquids, offering a control valve range from dead tight to full bore. Featuring a high-lift main valve piston with a soft face, it includes four flow trims for adjustments from full to ultra-low flow. Available in 14 sizes and 7 material options, our range also includes pilot controllers, encompassing remote and electronic variants. The Auld Standfast Reducing Valve remains unaffected by fluctuations in inlet pressures, ensuring consistent performance.

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