Burst Disc Assembly

For use in North America, this PRD (Pressure Relief Disk) assembly aka "burst disk" fits the typical 3/8-24 UNF thread PRD openings of many brands of valves including but not limited to DGX, Thermo, Dive Rite, Sea Elite, XS Scuba, Hollis, Blue Steel, late model OMS and limited Sherwood valves. However, this assembly does NOT fit 1/2-inch PRD openings found on some Sherwood, Harrison, Genesis and early OMS brand valves. A one-piece safety assembly eliminates the possibility of mismatched components and reduces the likelihood of accidental incorrect installation of the safety assembly.

Pressure relief disks are described by their release pressure, not the cylinder service pressure. This PRD is clearly marked with the release pressure in PSI on the hex head and requires 100-120 in-lb of torque for installation. If the PRD is installed in the scuba valve too tightly it will rupture prematurely, and if installed not tightly enough it will leak.