FSY90N - NanoScored Rupture Discs
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
Other Products and Services from Flowstar (UK) Ltd
Hattersley 950 PN16 Butterfly Valve - Lever Operated
Medenus RS250 Gas Pressure Regulator & Shut Off Valve
The Medenus RS250 Gas Pressure Regulator and Shut-Off Valve guarantees a consistent outlet pressure, unaffected by fluctuations in the primary inlet pressure. This product excels in dynamic gas usage conditions, providing rapid pressure regulation during abrupt changes in flow rate. Furthermore, the integrated safety shut-off valve ensures secure operation by disabling the system if the pressure exceeds or falls below safe levels.
The Medenus RS250 Gas Pressure Regulator and Shut-Off Valve is compliant with the DVGW Code of Practice G260/262, making it suitable for a range of neutral and non-corrosive gases (additional gases available upon request). The Medenus RS250 features flange connections ranging from DN25 to DN100 and is capable of handling working pressures of up to 8 bar. All gas pressure regulators come certified by DVGW and CE, ensuring high-quality standards.
Our RS series regulators offer a variety of options, including a safety membrane, vent valve, remote release for the shut-off valve (SSV), noise reduction features, and more. For further information, please consult our documentation or contact us directly.
Specifications
- Sizes: 1" (DN25) to 8" (DN200)
- Connections: Flanged PN or ANSI
- Materials:
- Housing: Silumin Casting
- Internal Parts: Stainless Steel
- Disk: NBR (vulcanised)
- Joints & Seals: Diaphragms: NBR
- Medium: Gas
- Inlet Pressure (Max): 8 Barg
- Outlet Pressure Range: 22 to 3000 mBarg
- Temperature: -20 to +60 °C
- Notes: Can be installed in any orientation, gas-tight zero position
Altecnic / Caleffi 309 Series Pressure & Temperature Relief Valve 1/2" 90°C 7 Bar - 309473CST
The Altecnic / Caleffi 309 Pressure & Temperature Relief Valve - 309473CST is designed to effectively control and limit the temperature and pressure of hot water in domestic storage heaters. This essential safety device prevents water temperatures from exceeding 100°C, thereby eliminating the risk of steam formation. When the system reaches predetermined pressure or temperature thresholds, the valve discharges a sufficient amount of water into the atmosphere, ensuring that both temperature and pressure are maintained within safe operating limits. The valve's mechanism operates as follows: - **Temperature Control:** As the temperature in the storage heater rises, the thermostat compound within the temperature sensor, which is submerged in hot water, expands. This expansion causes a thrust pin to move, actuating the obturator and opening the valve. The valve is set to activate at temperatures exceeding 90°C. - **Pressure Control:** When pressure limits are reached, the obturator, which is opposed by a set spring, lifts and fully opens the outlet. The pressure setting is specifically configured according to the maximum allowable pressure within the system. As temperature and pressure subside, the valve automatically re-closes within designated tolerances.
Specifications
Size: 1/2"
Connections: Male x Ø 15 mm with compression fitting for copper pipe
Materials: DZR
Medium: Water
Set Pressure: 7 Barg
Discharge Rating: 10 kW
Temperature Setting: 90 degC
Probe Length: 97mm
Product Code: 309473CST
Notes: WRAS approved, CE marked
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.