The BWT-VA Series Oil-Water Plate Heat Exchanger (Bühler Water-Oil Heat Exchanger Stainless Steel Series) is engineered and manufactured by Bühler Technologies GmbH – a globally renowned German manufacturer specializing in fluid control solutions and industrial cooling systems. The BWT-VA series represents a heavy-duty cooling solution for hydraulic oil and lubricating oil circuits, utilizing vacuum-brazed stainless steel plate technology to deliver maximum thermal efficiency within a remarkably compact footprint.

In heavy industrial hydraulic systems, energy transformation generates substantial thermal losses within the hydraulic fluid. Without adequate cooling, elevated oil temperatures reduce viscosity, accelerate oil oxidation, destroy rubber seals, and shorten the lifespan of expensive pumps and valves. The Bühler BWT-VA heat exchanger eliminates these operational risks by rapidly transferring heat from the hot oil circuit to circulating cooling water across specialized corrugated stainless steel plates.

Key technical advantages of the Bühler Technologies BWT-VA:
- Premium Corrosion-Resistant Construction: All heat exchanger plates and connection ports in the BWT-VA version are fabricated from high-grade stainless steel (AISI 316L / 1.4404) fused via vacuum brazing. This enables seamless operation even when utilizing aggressive cooling water, river water, brackish water, or operating in corrosive chemical environments where conventional copper or aluminum heat exchangers fail.
- Optimized Corrugated Plate Design: The specialized chevron plate pattern induces strong turbulent flow even at low flow velocities. This maximizes thermal transfer coefficients while suppressing fouling and deposit formation on contact surfaces and minimizing pressure drops.
- Compact Footprint with High Pressure Resistance: Featuring high heat transfer surface density per unit volume, the Bühler BWT-VA is 50% to 70% smaller than traditional shell-and-tube heat exchangers of equivalent cooling capacity, while supporting operating pressures up to 30 bar.
- Energy Efficiency & Reduced Operating Costs: Superior heat exchange efficiency minimizes cooling water consumption and maintains hydraulic oil temperatures at ideal operational ranges (40°C - 55°C), significantly enhancing overall machinery stability.

The Bühler BWT-VA Oil-Water Heat Exchanger is the primary choice for large-scale hydraulic power units, plastic injection molding machinery, CNC machine tools, steel rolling mills, cement plants, thermal and hydroelectric power plants, and marine/offshore installations.

• Manufacturer: Bühler Technologies GmbH
• Product Family / Model: BWT-VA Series (Brazed Stainless Steel Plate Heat Exchanger)
• Device Type: Vacuum-Brazed Stainless Steel Oil/Water Plate Heat Exchanger
• Country of Origin: Germany
• Plate Material: High-grade Stainless Steel AISI 316L / 1.4404
• Brazing Material: Vacuum Copper brazing (Nickel brazing optional for aggressive media)
• Max. Operating Pressure: Up to 30 bar (435 psi)
• Test Pressure: Up to 45 bar
• Operating Temperature Range: -10°C to +150°C (Nickel-brazed versions up to +200°C)
• Cooling Capacity Range: Versatile cooling output from 5 kW to over 200 kW (Model size dependent)
• Max. Oil Flow Rate: Up to 300 l/min - 500 l/min (Depending on exchanger size)
• Max. Water Flow Rate: Up to 250 l/min - 450 l/min
• Fluid Volume: Extremely low internal volume for reduced hydraulic oil priming requirements
• Process Connection Ports: Female threads G3/4", G1", G1 1/4", G1 1/2" or SAE/DIN flange connections
• Compatible Media: Hydraulic oils (Mineral oil, HFC, HFD), Lubricating oils, Technical cooling water, Glycol solutions
• Net Weight: Compact and lightweight, easily mounted on hydraulic power unit frames