Resideo BA295I Stainless Steel Backflow Preventer

If you are purchasing a new valve and require a pressure test certificate, please ensure to add this item to your order. Please note that for NABIC valves, a separate certificate is necessary, which is available free of charge.

The FSLPDDW Double Way Rupture Discs are sophisticated composite conventional discs constructed from four key components: a slotted, perforated metal section, a sealing membrane (typically made from PTFE, but also available in various metallic and non-metallic materials), a protective section, and a calibration ring. Designed to be installed between flanges, these discs are ideal for use with gases and liquids in static conditions, particularly at low pressures. The FSDIFDW discs promptly react to excessive pressure, achieving complete opening within milliseconds, making them an excellent choice for valve protection. Vacuum or counter-pressure support options are also available. Additionally, composite rupture discs offer simultaneous protection from both pressure and vacuum.

Specifications

Sizes: Ranging from 2" (DN50) to 40" (DN1000)

Materials: Available in Stainless Steel, Alloy 201, Alloy 400, Alloy 600, Alloy 625, Alloy C276, Titanium. Membrane options include PTFE, PFA, Stainless Steel, and Aluminium.

Rupture Pressure: Between 0.5 - 5 bar g (varies by material and diameter)

Krl:

Tolerance: +/- 5% to +/- 20%

Temperature: PTFE/PFA membrane maximum temperature up to 265°C, or up to 480°C depending on the membrane type

Operating Margin: Up to 70%

Vacuum Support: Not Available

Fragmentation: None (membrane only)

Installation under Valve: Yes

Corrosion Resistance: Good - can be enhanced with a PTFE membrane

Linings: Yes

Container: Installed between flanges

Rupture Sensor Options: Electrical, Magnetic, Inductive, Optical

PED Certification (CE Mark): Available

ATEX EX II 2 GD Certification: Available

To request our Rupture Disc Request Form, please download it, complete it, and send it to sales@flowstar.co.uk.

Product Specification

Sizes Available: 1/2", 3/4", 1", 1.1/4", 1.1/2", 2" Connections: Male BSP Inlet x Female BSP Outlet Materials: Body: Gunmetal; Spring: Stainless Steel; Internal Parts: Brass / Gunmetal Disk Options: PTFE or Viton Suitable Mediums: Air, Vapours, Gases, Liquids, and Steam Set Pressure Range: 0.2 to 20 Barg Temperature Range: -60 to +225°C Maximum Notes: Approved to PED and GOST-R standards

Discover our exceptional range of high-performance valves designed for a variety of applications. Complying with the latest industry standards, our valves ensure reliability and durability across all mediums. With a diverse selection of sizes and materials, including gunmetal and stainless steel, our products are tailored to meet your specific needs and operate efficiently in challenging environments.