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RAH HolderHolders

Pre-Torque Holder design for use with Reverse Acting Series Disks (RA Series). Cutting Edge Technology Allows Use with Multiple Disk Types.

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Features
Specifications
Installation
Datasheets & Brochures

RAH Series offers one unique holder design that fits with multiple types of ZOOK Reverse-Acting metal rupture disks (RA4, RA6, RA8, RAX)
Pre-Torque Design allows for:
1. Pre-assembly of a rupture disk into a holder prior to field installation
2. Removal of the assembly from the piping system for inspection without disturbing the seal integrity of the rupture disk
3. Pre-torque bolts properly seat the disk by engaging the holder bite
Disk Dome is contained within holder’s inlet, which prevents damaging the disk during installation into mating flanges
Locating Pin allows only reverse-acting type disks to be mounted into holder
Fluoropolymer coated socket head cap screws resists corroding to holder assembly and provides easy removal without special sockets
Polyethylene cap screw covers prevents debris from building up in cap screw heads
Sizes 1” thru 12”
Standard cast holder materials: Carbon Steel (WCB), Stainless Steel (CF3M), Hastelloy (CW12MW)
Holder information is permanently affixed to the O.D. of holder
Bubble tight metal-to-metal bite and disk seal
Flow direction arrows on disk tag and holder provides permanent visual verification that holder assembly is properly oriented in the piping system
ANSI, DIN, and JIS Flange class and type specific, guards against installing an assembly into mating flanges with a different pressure rating than the rupture disk holder
Positioning hole in mounting lug is located in the exact position as the mating flange and allows for proper alignment. It can also be used as an extra “hand” when installing into horizontal piping
For custom materials and alternative flanges (types/ratings) ZOOK offers custom inserts (RAHI) or full flanges (RAH7) and custom overall heights

RAH Installation DataSheet

RAH DataSheet
RA Series DataSheet
PTFE Sleeved Holder Inlet

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