Choose products to compare anywhere you see 'Add to Compare' or 'Compare' options displayed. Compare All Close Shopping cart items Shopping cart items Keyword search Search Submit search mks Search Submit search Products MKS Capacitance Manometers Compact Pressure Transducers General Purpose Pressure Transducers High Performance Pressure Transducers Industrial Pressure Transducers Reference Pressure Transducers View All Capacitance Manometers Mass Flow Controllers & Meters Mass Flow Controllers Mass Flow Meters In Situ Flow Verifiers Flow Ratio Controllers Mass Flow Controller Accessories Vacuum Gauges Vacuum Pressure Transducers Vacuum Pressure Sensors Vacuum Gauge Controllers Vacuum Gauge Accessories Vacuum Gauge Calibration Legacy Vacuum Gauges Gas Analyzers Mass Spectrometers Tunable Filter Spectrometers FTIR Gas Analyzers NDIR Gas Analyzers Vacuum Flanges & Fittings ISO-KF Flanges & Fittings ISO-MF Flanges & Fittings CF Flanges & Fittings Butt Weld Flanges & Fittings Custom Vacuum Fabrication RF & Microwave Generators Microwave Generators RF Power Generators Pressure Controllers & Valves Pressure Controllers Vacuum Isolation Valves Downstream Exhaust Throttle Valves Upstream Flow Control Valves Gate Valves Plasma & Reactive Gas Solutions Remote Plasma Sources Ozone Generators & Systems Dissolved Gas Foreline Plasma Clean Systems Automation, Control & Sensing Heater Jackets & Traps Special Offers Virtual Booth Newport Ophir Spectra-Physics Atotech ESI Solutions Semiconductor Electronics and Packaging Specialty Industrial Support Global Service Technical Support Technical Resources Contact MKS Company About MKS Investor Relations News & Media Careers Contact Contact Us Online Corporate Offices Sales & Application Support Calibration, Service & Repairs Product Technical Support Products Vacuum Flanges & Fittings ISO-KF Vacuum Flange Components ISO-KF Vacuum Flange Piping Fittings ISO-KF Aluminum Conical Reducers 100313515 Conical Reducer, ISO-KF Flange Size NW50 to NW25, Aluminum Model: 100313515 Conical Reducer, ISO-KF Flange Size NW50 to NW25, Aluminum Conical Reducer, ISO-KF Flange Size NW50 to NW25, Aluminum Model: 100313515 Contact Us Loading... Request a Quote Add to List Add to List Create a New List List Name Required Create a New List Cancel Add to List Your Saved Lists: Preferred List" selected> Add to List Create a New List List Name Required or Create a New List Cancel Add to List 1 item(s) added to 100313515 Conical Reducer, ISO-KF Flange Size NW50 to NW25, Aluminum Continue Shopping View All Saved Lists Compare Add to List Add to List Create a New List List Name Required Create a New List Cancel Add to List Your Saved Lists: Preferred List" selected> Add to List Create a New List List Name Required or Create a New List Cancel Add to List 1 item(s) added to 100313515 Conical Reducer, ISO-KF Flange Size NW50 to NW25, Aluminum Continue Shopping View All Saved Lists Overview Overview The 100313515 Conical Reducer is used to reduce a NW50 size ISO-KF vacuum flange to a size NW25 ISO-KF flange and is made of aluminum. This flange size reducer features a high conductance conical between the two flange sizes. Series 31 ISO-KF vacuum components are designed for use at sub atmospheric pressure and use standard interface dimensions defined by the International Standards Organization (ISO) allowing them to be interchangeable with other ISO-KF compliant components. Series 31 components can be used as modular building blocks to create vacuum piping systems. IS-KF flanges are "sexless" with a symmetrical seal so that so that components are rotatable. ISO-KF vacuum flanges are joined by inserting a centering ring between the two flange faces, and securing them with a flange encompassing clamp.
Product Series Overview ISO-KF Aluminum Conical Reducers Technical Specs Technical Specs Component Type Reducer Series Series 31 Material Aluminum Flange Type ISO-KF Flange Size NW50 Flange Size 2 NW25 Length 1.57 in. (40 mm) Inner Diameter 0.87 in. (22 mm) Dimension "A" 0.87 in. Dimension "B" 1.57 in. Technical Specs Component Type Reducer Series Series 31 Material Aluminum Flange Type ISO-KF Flange Size NW50 Flange Size 2 NW25 Length 1.57 in. (40 mm) Inner Diameter 0.87 in. (22 mm) Dimension "A" 0.87 in. Dimension "B" 1.57 in. Conical Reducer, ISO-KF Flange Size NW50 to NW25, Aluminum PART: 100313515 Contact Us Loading... Request a Quote Compare Add to List Add to List Create a New List List Name Required Create a New List Cancel Add to List Your Saved Lists: Preferred List" selected> Add to List Create a New List List Name Required or Create a New List Cancel Add to List 1 item(s) added to 100313515 Conical Reducer, ISO-KF Flange Size NW50 to NW25, Aluminum Continue Shopping View All Saved Lists Overview Technical Specs Need help? Contact an Applications Specialist by sending us an email 100313515 - Drawings & CAD Additional CAD file downloads are not available for this product. CAD File Downloads: Loading... Download Close Close Close 100313515 - Drawings Additional drawings are not available for this product. Close Close 100313515©2026 MKS Inc. All rights reserved.
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