The ELK-213 has a 7-litre, steel pressurevessel. The pressure vessel is designed and manufactured in accordance with current pressure vessel standards (PED 97/23 EC §3.3) for a maximum working pressure of 3.0 bar (0.3 MPa).

The 30 mm polyurethane insulation is enclosed in a durable, lacquered steel jacket.

Model	Energy Efficiency Class, product label
ELK 213