Hattersley Fig 1432L PN20 Double Regulating Valve - Low Flow - DN15

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

The FSY90N Nano Scored Rupture Disc is a reverse-acting, micro-scored compression disc designed for high reliability and precision pressure relief. Its convex shape remains stable under operating pressure and only inverts at the set reverse pressure. Capable of operating at up to 95% of its burst pressure, the disc withstands thousands of pressure cycles without loss of performance. When activation occurs, it opens fully within milliseconds along the scored pattern, producing no fragments.

FSY90N discs are less affected by temperature fluctuations than conventional rupture discs, making them ideal for processes with wide temperature variations. They are suitable for gas and liquid applications (with a gas cushion where required) and are commonly used to protect pressure relief valves. A broad selection of materials and thicknesses provides excellent corrosion resistance, with optional PTFE lining available for enhanced chemical protection. Vacuum support is not required.

Key Specifications:

• Sizes: 1" (DN25) to 8" (DN200)

• Materials: Stainless steel, Alloy 201, 400, 600, C276, Titanium

• Burst Pressure Range: 0.2–70 bar g (depending on size and material)

• Tolerance: ±5% to ±20%

• Operating Margin: 90% standard, up to 95% in suitable conditions

• Temperature Range: -196°C to 600°C

• Fragmentation: None – clean, full opening

• Use Under Valve: Yes

• Corrosion Resistance: Very good

• Linings: Optional

• Holders: FSHR/A, FSHR/P, FSHR/F, FSHTC

• Rupture Detection: Electrical, magnetic, inductive, optical

• Certifications: ASME (UD Stamp), PED (CE), ATEX EX II 2 GD

**FSDIFDW Double Way Rupture Discs: High-Performance Pressure Relief Solutions** The FSDIFDW Double Way Rupture Discs are expertly engineered composite conventional discs, constructed from four essential components: a slotted, perforated metal section, a seal membrane (primarily made from PTFE, but also available in various metallic and non-metallic materials), a protective layer, and a calibration ring. Designed for installation between flanges, these discs excel in static applications involving both gases and liquids at low pressures. Responding to excessive pressure, the FSDIFDW rupture discs achieve full opening in mere milliseconds, making them an ideal choice for valve protection. For applications requiring vacuum or counter-pressure protection, support options are also available. These composite rupture discs can effectively provide simultaneous protection against both pressure and vacuum scenarios. **Specifications** - **Sizes:** Available in 2" (DN50) to 40" (DN1000) - **Materials:** Stainless steel, Alloy 201, Alloy 400, Alloy 600, Alloy 625, Alloy C276, Titanium; Membrane options include PTFE, PFA, Stainless steel, and Aluminium - **Rupture Pressure:** Ranges from 0.5 to 5 bar g (dependent on material and diameter) - **Krl:** - **Tolerance:** ± 5% to ± 20% - **Temperature Resistance:** Membrane options in PTFE/PFA withstand up to 265°C, with some materials performing up to 480°C (depending on membrane type) - **Operating Margin:** Up to 70% - **Vacuum Support:** Not available - **Fragmentation:** None (membrane only) - **Use Under Valve:** Yes - **Corrosion Resistance:** Good; can be enhanced with a PTFE membrane - **Linings:** Available - **Container Type:** Installed between flanges - **Rupture Sensor Options:** Electrical, Magnetic, Inductive, Optical - **PED Certification (CE Stamp):** Available - **ATEX EX II 2 GD Certification:** Available For more information or to request a quotation, please download our Rupture Disc Request Form and send the completed document to sales@flowstar.co.uk. By choosing FSDIFDW Double Way Rupture Discs, you ensure effective and reliable pressure relief for your industrial applications.