Custom Metal Coolant Expansion Tank for Automotive Cooling Systems
Custom Metal Coolant Expansion Tank
,Automotive Metal Coolant Expansion Tank
,Automotive Cooling Systems Metal Coolant Tank
Custom Metal Coolant Expansion Tanks for Automotive Cooling Systems
This coolant overflow recovery tank is specifically designed for automotive cooling systems to provide overflow protection and fluid recovery under fluctuating pressure conditions, while also facilitating routine coolant top-off maintenance. The front of the product features a large knurled filling cap with a built-in O-ring seal, enhancing sealing reliability and operational stability during the filling process. Hose/fluid connectors are located on the side for overflow inlet and return connections, creating a controlled flow path for the coolant as system pressure fluctuates. This integrated design enables unified management of pressure relief, fluid compensation, and maintenance refilling.
Technical Specifications
| Material Types | Carbon Steel / Stainless Steel / Aluminium / Iron, etc. |
| Fabrication Method | Laser Cutting / Metal Bending / Tube Bending / Stamping / Machining / Welding / Riveting, etc. |
| Surface Treatment | Wire Drawing / Surface Grinding / Polishing / Electroplating / Anodising / Powder Coating / Baking Finish / High-temperature Coating / Sand Blasting / Enamelling / Pickling & Passivation, etc. |
| Cutting Precision | ±0.1 mm (±0.004 in) |
| Bending Range | 0.3-10 mm (0.012 - 0.394 in) |
| Pressure Tonnage Range | 35T - 150T |
| Pipe Bending Diameter Range | 6-200 mm (0.236 - 7.87 in) |
| Acceptable Drawing Formats | PDF / DWG / DXF / STEP (.step/.stp) / IGES (.iges/.igs) / SolidWorks files (.sldprt/.sldasm) |
| Production Support | Prototype to Mass Production |
Uses
Suitable for automotive radiator systems, aftermarket cooling systems, engine thermal management systems, and cooling circuits that require coolant overflow recovery and replenishment functions.
One-Stop Sheet Metal Solutions, From Concept to Production
- Product Development Support
We help turn product concepts into manufacturable products. - DFM Cost Optimization
We reduce production costs through design and process optimization. - Consistent Quality Control
We maintain consistent dimensions and quality from prototyping through mass production. - Multi-Process Integration
We minimize communication overhead associated with working with multiple suppliers. - Flexible Production Capacity
We accommodate both small-batch pilot production and mass production needs. - Dedicated Project Management
We provide end-to-end project management and rapid communication and response.

FAQ
Q1: What is the purpose of the knurled cap in the structural design of large-size knurled filling caps?
A1: The knurled texture increases friction during manual operation, making filling and opening more stable, while the built-in O-ring ensures the filling port remains sealed.
Q2: How is secondary contamination or air entrapment prevented after coolant overflows into the reservoir?
A2: The sealed reservoir chamber minimizes contact with outside air, thereby reducing the risk of air entrapment and contamination.
Q3: Does this design affect the radiator's original pressure setting?
A3: No. The overflow reservoir serves solely as an auxiliary storage and buffer unit and does not alter the radiator cap's original opening pressure setting.
Q4: Do the side fittings support flexible installation orientations in different system layouts?
A4: Yes, they do. The routing of the tubing can be adjusted according to the vehicle or equipment layout to accommodate different installation orientations.
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