HPX-PT ™ P R E-TORQUED H OLDER ASS EMB LY HPX-PT pre-torqued holders incorporate high strength steel socket head cap screws to ensure accurate loading and sealing of the HPX™ rupture disc. The HPX-PT holder allows the disc to be correctly fitted in the workshop using precise recommended torque levels, prior to installation of the complete assembly between the flanges in the process system relief stream. COMMON INSTALLATIONS ENSURES PRECISE INSTALLATION Process equipment having glass or TEFLON® lined flanges that cannot provide the compression required to seal the rupture disc in the holder Installations where the piping arrangement restricts access preventing correct torque loading of the flange fasteners Challenging processes requiring regular removal of the rupture disc and holder assembly for inspection Applications requiring leak testing of the rupture disc assembly prior to installation in the piping system FEATURES Allows a precise torque load to be applied in the controlled environment of a workshop prior to installation Maintains precise loading of the rupture disc where poor flange alignment and gasket cold flow may be an issue Pre-torqued holder screws are protected with NEDOX® surface coating that will not chip, peel or flake off. The NEDOX® coating prevents wear, sticking and galling of the screws, and provides corrosion resistance superior to stainless steel, and chromium or nickel platings SPECIFICATIONS Compatible with the HPX™ rupture disc products Standard sizes ranging from 1” through 8” (25 mm to 160 mm) Available in sizes and bolting classes shown in table on next page STANDARD MATERIALS AVAILABLE Carbon Steel 316 Stainless Steel ® MONEL HASTELLOY® C AVAILABLE OPTIONS Alternate heights Gauge taps in holder outlet Flange studs & nuts, alloy steel or 316 SS J-Hook on holder inlet Corrosion resistance enhancement by adding a TEFLON® coating or TANTALINE® treatment PERFO RMANC E U ND ER PRESS U RE ® CONT’D

H P X - P T ™ P R E - T O R Q U E D H O L D E R A S S E M B LY D ATA S H E E T // PAG E 2 HPX-PT PRE-TORQUED HOLDER WITH SOCKET HEAD CAP SCREWS HPX-PT PRE-TORQUED HOLDER ASSEMBLY HPX-PT HOLDER // Weights, Dimensions & Bolting Classes SIZE OUTSIDE DIAMETER HEIGHT WEIGHT in mm in mm in mm lb kg 1" 25 mm 3.63 92,2 1.80 45,7 3.34 1,51 150 300/600 10/40 10/20 30/40 1 1/2" 40 mm 4.63 117,6 2.04 51,8 6.39 2,90 150 300/600 10/40 10/20 30/40 2" 50 mm 5.25 133,4 2.36 59,9 9.31 4,22 150 300/600 10/40 10 16/20 30/40 3" 80 mm 7.00 177,8 3.21 81,5 22.21 10,07 150 300/600 10/40 10 16/20 30/40 4" 100 mm 8.10...