Straight and Conical Reducers—All Flange Types
Zero-Length Reducer ConFlat® (CF) UHV Flanges (Standard)
Zero-Length Reducer flanges used to adapt two different size knife-edge flanges that need bolted together where the small flange profile is imperial tapped.
Zero-Length Reducer ConFlat® (CF) UHV Flanges (Metric)
Zero-Length Reducer flanges used to adapt two different size knife-edge flanges that need bolted together where the small flange profile is metric tapped.
ConFlat® (CF) UHV Straight Reducer Nipples
ConFlat® (CF) UHV Conical Reducer Nipples
Conical reducer nipples adapt two different flange sizes where the large flange is fixed and the small flange is rotatable. The connecting tube is conical such that it is sized for both the small and large flange.
KF (QF) HV Conical Reducer Nipples (304L SS)
KF (QF) HV Conical Reducer Nipples (Aluminum 6061-T6)
KF (QF) conical reducer nipples in Aluminum 6061-T6 feature two KF clamp style connections on both ends, each having a different size to accommodate varying diameters of vacuum lines. The conical shape helps in reducing the diameter smoothly.
KF (QF) HV Straight Reducer Nipples (304L SS)
KF (QF) straight reducer nipples in 304L Stainless Steel feature two KF clamp style connections of different sizes on each end, used to connect two vacuum lines of different diameters in a straight configuration.
ISO-K HV Reducing Nipples (Clamped)
ISO-K High Vacuum (HV) Clamp Style Straight and Conical Reducing Nipples in 304L Stainless Steel
ASA HV Reducer Full Nipples (Flat Flanges)
Reducer nipples adapt two different flange sizes. Available in flat fixed and flat rotatable options.
ASA HV Reducer Full Nipples (Grooved Flanges)
Reducer nipples adapt two different flange sizes. Available in grooved fixed and grooved rotatable options.
ASA HV Reducer Full Nipples (Grooved & Flat Flanges)
Reducer nipples adapt two different flange sizes. ASA full nipples available with options to choose flanges on either side being grooved or flat and fixed or rotatable.
Straight & Conical Reducers for Vacuum and Process Line Transitions
ThinFilmMaterials provides a complete line of Straight & Conical Reducers designed to connect vacuum components of different diameters while maintaining leak-tight performance and mechanical stability. These reducers are available with all major flange types, including CF (ConFlat®), KF (QF/NW), ISO, and ASA, ensuring seamless integration into a wide range of vacuum and process systems.
Our Straight & Conical Reducers are fabricated from high-grade stainless steel or aluminum, with precise dimensions, smooth internal surfaces, and high vacuum compatibility. Straight reducers maintain a uniform internal diameter across the transition, while conical reducers provide a tapered shape to minimize turbulence and conductance loss.
Key Features:
Reducer types: Straight and conical (tapered) profiles
Flange options: CF, KF, ISO-F, ASA, tube weld, or custom
Materials: 304L/316L stainless steel, aluminum (on request)
Vacuum rating: Suitable for HV and UHV applications
Surface finish: Vacuum-compatible with smooth internal bores
Sizes: Available from 0.5″ to 12″ OD transitions
Applications:
Straight & Conical Reducers are widely used in:
Vacuum system transitions between dissimilar pipe sizes
Chamber ports to pumping or instrumentation lines
Gas delivery and exhaust lines in deposition equipment
Load-lock interface and vacuum plumbing adjustments
Custom research setups requiring flange-type adaptation
All Straight & Conical Reducers from ThinFilmMaterials are manufactured to tight tolerances, with optional custom lengths, electropolished finishes, and cleaning for UHV service. Whether you’re matching a small instrument to a large process chamber or adapting between regional flange standards, we offer precision reducers to meet your needs.