Double Sided Flanges, crafted from durable 304 stainless steel (304ss), are designed to fit between two flanges of the same size to enable easy installation of thermocouple gauge tubes or up-to-air valves without compromising vacuum conductance or pumping speed. These flanges provide a convenient solution to add instrumentation or access points in ultrahigh vacuum (UHV) systems with minimal impact on performance.

Each assembly requires two gaskets and longer bolts to accommodate the added flange thickness. Designed with a nonrotatable geometry and clearance bolt holes on most sizes, these flanges maintain compatibility with standard Conflat® components for seamless integration.

Key Features

UHV Rated: Vacuum integrity tested to 1x10⁻¹³ Torr (1.33×10⁻¹¹ Pa)
High Temperature Rated: Bake-out capable up to 450°C (842°F)
Material: Constructed from corrosion-resistant 304 stainless steel
Geometry: Nonrotatable design for precise sealing alignment
Gasket Options: Supports standard OFE copper gaskets or optional FKM elastomer gaskets
Bolt Holes: Clearance bolt holes on most flange sizes for easy installation
Compatibility: Fully Conflat® compatible for use in ultrahigh vacuum systems

Applications

Double Sided Flanges are widely used in UHV systems for vacuum instrumentation integration such as thermocouple gauge tubes, up-to-air valves, vacuum gauges, and vacuum interrupters. Their minimal impact on pumping speed and conductance makes them ideal for scientific research laboratories, semiconductor processing equipment, surface analysis tools, and vacuum system maintenance where additional access points or sensors must be installed without disrupting system performance.