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reverse acting knife blade rupture disc (yd series)


reverse acting knife blade rupture disc (yd series)-j9九游会真人游戏第一品牌

solid metal design.

designed for non-fragmentation.

sizes : 25mm - 600mm


operation ratio: 90%

vacuum support required:no

suitable for gas or liquid service

standard holder: ydja

reverse acting knife blade rupture disc (yd series)

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the convex of reverse acting rupture disc is on the high pressure process side. when the solid metal disc is compression-loaded, the disk reverses with the knife blades on the upper holder cutting it to relieve pressure.

note: types and specifications of safety devices need to be calculated and selected according to the specific working conditions of the protected equipments and systems before quotations. 

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technical features:

• non-fragmentation design

• operating ratios up to 90% of the low end of burst tolerance

• suitable for gas or liquid service 

• standard manufacturing design range and total tolerance ensures marked rating on disk tag does not exceed the mawp of equipment

• withstands full vacuum without additional support 

• wide range of standard and exotic materials available 

• sizes from 25mm to 600mm 

• burst ratings from 0.5barg to 150 barg

• use of rupture discs in combination with safety valves

• 3-dimensional stainless steel tag engraved with complete disc specifications


 •fluoropolymer liners can prevent corrosion of rupture discs 

note: the maximum temperature rating of rupture disks supplied with liners is lower than the base disk material. 

protection of safety relief valves

 • use of rupture discs in combination with relief valves can prevent corrosion of the relief valve internals.

 • tell-tale assembly:pressure gauge、tee、excess flow valve、tube


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