This is a non-stocked item, please call +44 (0)1482 601030 or email sales@flowstar.co.uk for price and availability.
Forward Acting FSDIFFA rupture discs are composite conventional 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. This
disc has been designed to be mounted between flanges. It is excellent
for use with gas and liquids in static conditions and excellent for low
pressures. FSDIFFA discs react to excessive pressure with total opening
in a few milliseconds. They are therefore recommended for valve
protection. Supports may be provided for vacuum or counter-pressure
protection. Composite rupture discs may also be used for simultaneous
protection from pressure and vacuum.
Sizes: 1" (DN25) to 40" (DN1000)
Materials: Stainless steel, Alloy 201, Alloy 400, Alloy 600, Alloy 625, Alloy C276, Titanium
Rupture Pressure: 0.5 - 5 bar g (depending on material and diameter)
Tolerance: from +/- 5 % to +/- 20%
Temperature: membrane in PTFE/PFA max 265°C, up to 480°C (depending on the membrane)
Operating Margin: up to 70%
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
PED Certification (CE Stamp): Available
ATEX EX II 2 GD Certification: Available
Notes: