Disc Holders
Holder HIA/HRA Disc Holders
Safety · Rupture Discs
Manufacturer: 
HIA/HRA holders are specifically designed to ensure maximum reliability, optimize flow (due to optimal opening of rupture discs), assure proper orientation in piping system, provide a tight seal, and prevent fragmentation of DonadonSDD rupture discs. Typically, a bursting disc holder is a two-piece unit consisting of a base flange (inlet) and a holddown flange (outlet). The face of the holder is machined to hold the bursting disc and forms a leak-tight metal-to-metal seal, allowing temporary removal of the disc for visual inspection. HRA holders protect the dome of reverse acting discs (SCR, Y90, KRD).
Technical data
- Type
- HIA / HRA
- Disc compatibility
- HIA: DCD, LPD, SCD, GR · HRA: SCR, Y90, KRD
- Dimensions
- From DN15 (½ inch) to DN1000 (40 inches)
- Materials
- Carbon steel, 316L and 304 stainless steel, alloy 201, 400, 625, C276 and more
- Flange standards
- EN 1092-1, ASME, ANSI, BS, AS, SABS, JIS
- Options on request
- Surface finish 3.2–6.3 µm, tongue/groove face (DIN EN 1092-1), ¼" or ½" NPT gauge tap, O-rings, PFA coating
- Accessories
- Nipples, T connectors, excess flow valve, pressure gauge
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