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© VDL Groep 2026
The use of safety double pipes is recommended for applications with high operational risk or severe environmental hazards.
The gasketless compact heat exchangers combine the high efficiency of a conventionally gasketed plate heat exchanger with the high temperature and pressure resistance of welded designs. The acid-resistant stainless steel plates are joined together using a vacuum brazing process.
Copper or nickel is used as the brazing material.
The standard types consist of 10 to 200 plates.
The wide range of possible variations (number of plates, embossing, and angle) allows the performance values specified by the operator to be optimally achieved.
The unit is designed for temperatures from -160 °C to +400 °C and operating pressures up to 30 bar.
The plates are made of acid-resistant stainless steel, Hastelloy, or titanium.
The one-piece pressed plates are available in sizes ranging from 0.03 m² to 3.25 m².
The plates have a “herringbone embossing” that guarantees turbulent flow and high pressure resistance.
Lateral tensioning bolts clamp the entire plate pack between the fixed frame plate and the movable pressure plate.
The gaskets are made of NBR, EPDM, or Viton. The gaskets can be designed as adhesive or replaceable gaskets.
The use of replaceable gaskets allows for cost-effective gasket replacement.
The gaskets are double-ganged around the channel openings so that a gasket defect is indicated by leakage.
Safety heat exchangers with double plates can be used for increased safety requirements. In the event of a defect, the medium flows through the pressureless safety chamber between the double plates.
