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FSLPDDW - Double Way Rupture Discs

Product Description

FSLPDDW model discs are a simple, reliable, accurate and economical solution for applications requiring extremely low pressure protection (positive or negative). Their primary use is to protect processing and storage tanks, atmospheric vessels and silos with low design pressures, and therefore only able to withstand slight pressures and vacuums, against implosion or rupture. A specially interesting application is in the protection of biogas digesters. FSLPDDW rupture discs are flat composite discs formed by four parts: a slotted, perforated metal part a seal membrane (usually in PTFE but also available in many other metallic or non-metallic materials) a protection section a calibration ring with blades to improve membrane rupture FSLPDDW discs open without fragmentation to prevent product contamination and can be customised to meet a broad range of non-standard specifications and applications. FSLPDDW discs can be designed: for dual pressure and vacuum protection to resist vacuum or counter-pressure

Sizes: 2" (DN50) to 20" (DN500)
Materials: Stainless steel, Alloy 201, Alloy 400, Alloy 600, Alloy 625, Alloy C276, Titanium / Mebrane: PTFE, PFA
Rupture Pressure: 5 - 500 millibar g (depending on material and diameter)
Tolerance: from +/- 5 % to +/- 20%
Temperature: up to 265 °C
Operating Margin: up to 60%
Vacuum Support: Available
Fragmentation: No (membrane only)
Use under valve: Yes
Corrosion Resistance: Good - can be protected with a PTFE membrane
Linings: Yes
Container: Mounted between flanges
Rupture Sensor: Electrical, Magnetic, Inductive, Optical
ATEX EX II 2 GD Certification: Available

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