FSDIFFA - Forward Acting Rupture Discs

**FSDIFFA Forward Acting Rupture Discs: Reliable Pressure and Vacuum Protection** The FSDIFFA Forward Acting Rupture Discs are advanced composite devices designed from four essential components: a slotted, perforated metal section, a sealing membrane (available in PTFE along with various other metallic and non-metallic materials), a protective cover, and a calibration ring. These rupture discs are expertly engineered to be installed between flanges, making them ideal for use with gases and liquids under static conditions and at low pressure levels. FSDIFFA discs respond swiftly to excessive pressure, achieving total opening in just a few milliseconds, thus providing effective valve protection. Additionally, supports can be included for vacuum or counter-pressure applications. These composite rupture discs also offer the capability for simultaneous protection from both pressure and vacuum. **Specifications:** - **Sizes:** Ranging from 1" (DN25) to 40" (DN1000) - **Materials:** Available in Stainless Steel, Alloy 201, Alloy 400, Alloy 600, Alloy 625, Alloy C276, and Titanium - **Rupture Pressure:** Ranges from 0.5 to 5 bar g, depending on material and diameter - **Tolerance:** From +/- 5% to +/- 20% - **Temperature Range:** PTFE/PFA membrane can withstand temperatures of up to 265°C, with certain membranes enduring up to 480°C - **Operating Margin:** Up to 70% - **Fragmentation:** None (membrane only) - **Use Under Valve:** Yes - **Corrosion Resistance:** Good – can be enhanced with a PTFE membrane - **Linings:** Yes - **Container:** Mounted between flanges - **Rupture Sensor Options:** Electrical, Magnetic, Inductive, Optical - **PED Certification (CE Mark):** Available - **ATEX EX II 2 GD Certification:** Available For further inquiries, please download our Rupture Disc Request Form and send the completed document to sales@flowstar.co.uk. Secure your systems with FSDIFFA Forward Acting Rupture Discs—your reliable solution for pressure and vacuum management.

View Product on Company Website

Other Products and Services from Flowstar (UK) Ltd

Reliance RWC Red 2116 Rubber Seat Pressure Relief Expansion Cartridge 2 Bar ZRC209020

Replacement cartridge for Reliance Valves Pressure Relief Valves. Our Reliance Valves Pressure Relief Valve Cartridges are single-piece replacements designed for most units and combination relief valves. Easy to install, these cartridges come with a durable EPDM boot that withstands high system temperatures. Click here to explore our complete range of Reliance (RWC) Relief Valves.

Features and Benefits:

Durable EPDM boot ensures a secure seal once fitted to the valve body.
Compatible with Reliance Valves heating pressure relief valves.
Designed exclusively for use with central heating systems.

Specification

Size: 1/2" & 3/4"
Pressure: Preset at 2 bar
Part Number: ZRC209020
Type: Replacement cartridge for heated system pressure relief valves

Hattersley Fig 100YL PN25 Ball Valve

Features & Benefits

• Resistant to dezincification
• Lightweight, compact, and easy to install and operate
• More durable to damage during installation
• Available in sizes ranging from 1/4" to 2"
• Compliant with BS EN 331:1998 testing standards

Specifications

• UK End Connection: BS EN 10226-2:2005 (formerly BS21 Taper)
• US End Connection: ANSI B1.20.1:1983
• Operator Type: Lever
• Specification: Quarter turn mechanism with PTFE seats and stem seals
• Tested by GL Industrial Services, meeting the essential requirements of BS EN 331:1998

Pressure/Temperature Rating

• -10 to 100 °C at 25 Barg
• 110 °C at 23.5 Barg

Hattersley Fig 100TH PN25 Ball Valve - T-Handle

Features & Benefits

• Dezincification resistant• Light, compact and easy to install and operate• Improved leak protection• More resistant to damage during installation• WRAS Approved for use on hot and cold water systems up to 85°C• Conforms to BS EN 13547• T-Handle sizes 1/2” to 1”• Lockshield sizes 1/2” to 2”

Specification

• UK End Connection: BS EN 10226-2:2005 formerly BS21 Taper.• US End Connection: ANSI B1.20.1:1983.• Operator: T-Handle/Spanner/Socket.• Specification: DZR Brass (CW602N) Body Ball Valve, in accordance to BS EN 13547, two-piece construction, Floating Stainless Steel SS304 Ball, Anti Blow-out stem, PTFE seats, Threaded Ends, PN25 Rated. WRAS approved.• Suitable for use on Group 2 Gas, Group 1 and Group 2 Liquids as defined by Pressure Equipment Directive 2014/68/EU, as amended.• Not suitable for use on Group 1 Gases or unstable liquids.

Pressure/Temperature Rating

• -10 to 100 degC - 25 Barg• 120 degC - 21.8 Barg

View All

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.

Learn More Visit Website