HPX Insert Holder UK & Ireland | ESI Technologies Group

HPX Insert Holder

HPX’s holders are designed to optimise flow, assure proper orientation of the HPX Rupture Disc in your piping systems, provide a tight seal, and prevent fragmentation of the rupture disc.

Characterised by best-in-class certified Kʀ factors of 0.29 for gas/vapour relief or 0.38 for liquid relief for the insert and HPX-PT Holders, and a Kʀɢʟ factor of 0.97 for gas/vapour/liquid relief for the Double Disc holder.

Correct orientation of the rupture disc in the holder is assured by the three alignment pins in the holder inlet that properly align and orient the rupture disc in the holder. An optional J-Hook can be used to orient the holder in its mating flanges. The flow arrows on the holder and rupture disc tags confirm proper flow direction.

HPX Rupture Disc insert holders are available for ASME, JIS or DIN class flanges.

Product Benefits

A durable tapered sealing surface on the holder inlet that, along with proper installation and handling. provides a bubble-tight (with no air bubbles detected with leak detection fluid) metal-to-metal seal between the holder inlet and rupture disc.
The holder inlet protects the rupture disc dome during the installation of the assembly into the piping system.
The holder outlet bore incorporates an arcuate that provides a radiused hinge for the rupture disc petal to form around preventing fragmentation of the rupture disc.
As standard, the holder will come with a spiral groove facing per ASME B16.₅, which will provide a surface finish between 125 and 250 micro-inches (3.2 to 6.3 micrometres)
1″- 8″ HPX holders can be directly coupled with a safety relief valve. HPX-RH and HPX-PT-RH are not designed to be directly coupled with a safety relief valve. The 10″ (250mm) and 12″ (300mm) HPX holders require a spool piece when used under a safety relief valve.

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