The Hypertherm 420368 Water Tube Assembly is a critical engineering component designed exclusively for the XPR170 and XPR300 plasma cutting systems. In the realm of high-definition plasma cutting, thermal management is not merely a safety feature; it is a core operational parameter that dictates cut quality, consumable life, and torch longevity. The XPR class of systems utilizes high-amperage arcs constricted to extreme densities, generating significant thermal loads that must be dissipated rapidly to prevent component failure.
This OEM water tube assembly is engineered to facilitate the precise delivery of coolant to the most thermally stressed areas of the torch, specifically the electrode and nozzle interface. The geometry of the tube is manufactured to strict tolerances to ensure laminar flow where possible and turbulent flow where heat transfer coefficients need to be maximized. Any deviation in the dimensions of this tube, which can occur with non-OEM replications, may lead to localized hotspots, premature coolant boiling (vapor lock), and subsequent arc instability.
Technicians and maintenance personnel understand that the cooling loop is the lifeline of a liquid-cooled plasma system. The 420368 assembly includes the necessary sealing geometries to integrate seamlessly with the torch body, preventing coolant leakage into the shield gas or plasma gas channels—a scenario that typically results in immediate consumable destruction and potential torch head damage. When servicing an XPR torch that is exhibiting flow errors or overheating symptoms, replacing the water tube assembly with this genuine Hypertherm part restores the system to its factory-specified thermal dynamics.
Technical Specifications & Compatibility:
| Additional Information |
|---|
| Packaging Description:1 of each, 1 per each |
| Item:Water Tube, Accessory |
| Compatible Brand/Model:Hypertherm XPR170, Hypertherm XPR300 |
| Product Type:Torch Coolant Tube Assembly |
| Part Number:420368 |
