Poly-SD Bolted Type Series Rupture Disc Holder

The Typical Poly-SD Bolted Type Rupture Disc Holder is a two-piece unit consisting of a base flange (inlet) and a holddown flange (outlet).

The seating surfaces of these flanges are machined to grip Fike’s Poly-SD Rupture Disc.

When assembled, the crown of the disc protrudes into the holddown flange and the flat portion of the disc is clamped between the base and hold down flanges, providing a metal to metal seal.

Fike’s Bolted Type Rupture Disc Holders can be incorporated into a pressure system by welded or threaded connections bolted between ANSI companion flanges.

The Poly-SD Bolted Type Rupture Disc Holder design is based on ANSI, JIS, and DIN B16.5 dimensional standards to provide compatibility with ANSI flanges.