Waterjet Cutting
Used Flow Mach 4c: Sell or Buy at Auction
Flow International is the world's leading manufacturer of waterjet cutting systems: the technology pioneer that invented ultra-high-pressure waterjet cutting. Flow waterjet systems cut virtually any material including metals, composites, glass, stone, and rubber without heat-affected zones. Flow's Mach 500 and Dynamic Waterjet systems are the standard in aerospace, fabrication, and job shop environments.
The Flow Mach 4c is a large-format, high-rail bridge waterjet from Flow International of Kent, Washington, and it is best known as a 5-axis machine: most Mach 4c units carry Flow's Dynamic Waterjet XD head, which tilts the nozzle up to about 60 degrees to compensate for stream taper and to cut bevels and 3D geometry, producing a near-square edge straight off the table. It runs an ultra-high-pressure intensifier pump, typically configured anywhere from Flow's 60,000 psi standard up to the HyperPressure and HyperJet class near 90,000 psi, and it uses abrasive garnet to part metals, composites, stone, glass, and rubber with no heat-affected zone. The number in a listing, for example 4030 or 4020, describes the cutting envelope, and Mach 4c tables are large, commonly running from roughly 6 by 12 feet up to 13 by 22 feet, which places the machine in serious fabrication, aerospace, and precision job shop work rather than at the compact entry end of Flow's line. Driven by Flow's CNC control and software, it suits shops cutting large parts, thick stock, or angled and 3D edges, and KD Auctions markets each unit to that audience through a network of 500,000+ industry contacts. At auction, Mach 4c listings draw the strongest bidding when pump hours are low and the machine is complete and working, meaning the Dynamic Waterjet XD head, its controller and software, the catcher tank, and the abrasive delivery system all come with the unit.
Buying a Used Mach 4c
Metal fabrication shops, aerospace composite manufacturers, stone and tile fabricators, glass processors, job shops, and any manufacturer cutting materials where heat-affected zones are unacceptable. Waterjet cutting has broad cross-industry appeal.
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Flow waterjet systems sell consistently at auction. The brand's technology leadership and broad material-cutting capability attract buyers from multiple industries. Machines with low pump hours and complete cutting heads achieve the strongest results.
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Frequently Asked Questions
What is a used Flow Mach 4c worth at auction?
There is no single number: value tracks the machine's age and pump hours, its pressure configuration (a 60,000 psi standard pump versus a HyperPressure or HyperJet pump), the condition of the cutting head (a standard head versus the 5-axis Dynamic Waterjet XD), the health of the CNC control and software, and the tooling that comes with it, such as the catcher tank and abrasive delivery system. KD Auctions provides a free, AMEA-accredited and USPAP-compliant appraisal covering both orderly liquidation value (OLV) and forced liquidation value (FLV), so you have a clear picture before deciding how to sell.
How do I sell a used Flow Mach 4c waterjet at auction?
After a free valuation, a managed auction with KD Auctions typically runs 6 to 10 weeks from engagement to payout, and when a sale needs work onsite the team can dispatch within 48 to 72 hours. Commission is tailored to the engagement and quoted upfront, and most sellers pay nothing out of pocket. Because the Mach 4c is a large-format 5-axis platform, the strongest interest tends to come from established metal fabricators, aerospace and defense suppliers, and precision job shops that cut large, thick, or beveled parts, and KD Auctions markets each machine straight into that pool through a network of 500,000+ industry contacts.
About Flow
Flow International is the world's leading manufacturer of waterjet cutting systems: the technology pioneer that invented ultra-high-pressure waterjet cutting.
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