FSSCDA - ASME approved Rupture Discs

The FSSCDA rupture disc features precision micro-scored petals with four, six, or more radial scores, ensuring fast, controlled opening while minimising the risk of petal separation. This design makes the disc particularly suitable for high burst pressure applications. It can be used with both gases and liquids, including under cycling and pulsating conditions, without reducing safety margins. In an overpressure event, the disc activates within milliseconds and opens cleanly without fragmentation, making it ideal for protecting safety relief valves.

The FSSCDA supports an operating-to-burst pressure ratio of up to 85% and offers excellent corrosion resistance, which can be further enhanced with an optional PTFE lining. In many applications, the disc can also operate under full vacuum conditions without the need for support, providing added flexibility. These discs comply fully with ASME Section VIII, Division 1 requirements.

Key Specifications:

• Sizes: 1" (DN25) to 36" (DN900)

• Materials: Stainless steel, Alloy 201, 400, 600, C276, Titanium

• Burst Pressure Range: 2–413 bar g (30–6000 psi g), depending on size and material

• Krl: 1.33

• Tolerance: ±5% to ±20%

• Temperature Range: –196°C to 600°C

• Operating Margin: Up to 85%

• Fragmentation: None

• Use Under Valve: Yes

• Corrosion Resistance: Very good

• Linings: Optional

• Holder Options: FSHI/A, FSHI/P, FSHI/F, FSHTC

• Rupture Detection: Electrical, Magnetic, Inductive, Optical

• Certifications: ASME (UD Stamp), PED (CE), ATEX EX II 2 GD