Chat with us, powered by LiveChat

FSY90RA - Reverse Acting Rupture Discs

Product Description

The FSY90RA rupture discs are compression or reverse circumference micro-scored discs. The camber of the convex disc is not modified by the operating pressure except on reaching reverse pressure. This device works with ratios of up to 95% between operating and rupture pressure and withstands thousands of cycles without jeopardising its reliability. At the moment of reversion, the disc ruptures in a few thousandths of a second along the scored line without fragments and with full opening. FSY90RA discs have lower sensitivity to variations in temperature with respect to conventional discs and therefore are very useful in applications with large temperature variations. They are especially suitable for use with gas and liquids (with the presence of a special gas cushion) and for protecting pressure relief valves. The wide choice of materials and the thickness used make the FSY90RA discs very resistant to corrosion. Greater protection can be obtained using a PTFE lining, which can be applied to the process side of the disc. Vacuum support is not required.

Sizes: 1" (DN25) to 8" (DN200)
Materials: Stainless steel, Alloy 201, Alloy 400, Alloy 600, Alloy 625, Alloy C276, Titanium
Rupture Pressure: 0.2 - 70 bar g (depending on material and diameter)
Tolerance: from +/- 5 % to +/- 20%
Temperature: -196 degC to 600 degC
Operating Margin: 90% - Able to reach 95% depending on the service conditions
Fragmentation: No (will not break up on bursting)
Use under valve: Yes
Corrosion Resistance: Very good
Linings: Yes
Rupture Sensor: Electrical, Magnetic, Inductive, Optical
PED Certification (CE Stamp): Available
ATEX EX II 2 GD Certification: Available

If you need any help please use our online chat below, ring us on 01482 601030 or email