ISO63-250 Claw Clamp

Components and Fittings ISO-K ISO-F

When you buy vacuum pump components from Edwards, you can expect the quality and service that only a leading international supplier can provide. We understand that flanges and fittings are critical to the performance of your vacuum system, and supply only high quality products which meet the highest specification.

ISO fittings provide high corrosion resistance in semiconductor processing and excellent repeatability across the range of low to high vacuum applications. The flanges are joined using either claw clamps or bolts with a fluoroelastomer or nitrile centring ring and O-ring.

Double claw clamps slot into a circular groove around the flange (ISO-K figure A) and are secured to provide a simple but secure flange connection. The more conventional method is to use a range of bolt holes and nut/bolts with either a rotatable (ISO-F figure B) or fixed collar flange.

Our components and flange fittings are designed to be leak-tight across the range of vacuum applications, and not intended to provide full structural support. When designing any vacuum system, it is essential that consideration is given to the static and dynamic loads imposed on each connection. If necessary, additional mechanical support should be provided and built into the design. Regular inspection including leak-checking and, where appropriate, periodic replacement of components should be considered to ensure system efficiency and safety is maintained.

Features and Benefits

• Convenience of supply - Single source supplier, able to provide the complete system solution either online or via local supply centres.
• High quality and reliability - Precision material control ensures a dependable vacuum performance on sensitive or demanding applications.
• Comprehensive choice - Complete range for all common flange sizes in aluminium and stainless steel.
• Manufactured to ISO 1609 and DIN 28404 standards
• Nominal diameters 40-630 mm
• ISO-F flanges have fixed hole patterns
• ISO-K flanges are typically joined with claw clamps and can be converted/connected to ISO-F using a rotatable collar or half claws
• For use in high-vacuum applications: pressures > 10-8 mbar