vötschtechnik Explosion-Proof Heating and Drying Ovens, VTUW
Safely Heat & Dry in Explosive Atmospheres
Simultech offers the VTUW series from vötschtechnik (Weiss Technik) — heating and drying ovens built specifically for processes where flammable vapours or solvents may be present. These units are designed to meet strict safety regimes (ATEX / zone 1 & 2) while delivering reliable thermal performance.
VTUW ovens use a combination of circulation air with exhaust air to keep solvent concentrations under safe levels, while providing precise temperature control and uniform heating.
Key Features & Safety Advantages
1. Category 2G / Zone 1 & Zone 2 capable — the design handles operation in hazardous zones.
2. Unlimited combustible substance volume — the series allows virtually unrestricted solvent / flammable material loading while maintaining safety.
3. Support for various explosion groups & classes — compatible with IIA / IIB explosion groups and T1–T4 temperature classes.
4. Flexible heating mediums — can be heated via steam, water, oil, or separate tempering device (which may be located in a non-hazard zone).
5. Energy-efficient operation — uses recirculating air with exhaust air, requiring relatively low fresh air volumes.
6. Clean room version option — a variant of VTUW can be built to meet clean room or cleanliness requirements.
7. Robust safety measures - all components are explosion resistant per zone requirements; fresh air is drawn from neutral areas; additional protective devices can be included.
Typical Technical & Application Details
While Weiss Technik does not always publish full chamber-by-chamber specs in the public domain for VTUW, the series is characterized by:
• Heating by process medium (steam, water, hot oil) or external tempering device
• Operation using a mix of circulation and exhaust to manage vapour levels
• Compliance with 2014/34/EU (ATEX / explosion protection) for safe deployment in hazardous areas
• Capability to process solvents of T1–T4 and IIA / IIB groups
• Potential for custom options: door windows, shelves, flow control valves, condensate collection, temperature conditioning, inert gas purging, and fresh air grids
Applications:
VTUW ovens are suited for processes in industries such as chemical, pharmaceutical, electronics, coatings, and specialty manufacturing — wherever flammable vapours might be present during heating or drying. Examples include solvent-based coatings, impregnation drying, thermal testing of volatile compounds, or processes requiring strict explosion safety.
