Our Bolted Holder assembly is available with any combination of either weld-neck or threaded inlet and outlet connections. Full diameter flat-faced inlet and outlet flanges are available and designed to be used between ANSI companion flanges. The Bolted Rupture Disc Holders are designed to be used with or in place of ANSI B16.5. Standard materials of construction are carbon steel and 316 Stainless Steel. Other materials are available upon request.