
DVA manufactures vacuum paddle dryers, drum dryers, Nutsche filters, cone dryers, vacuum chambers and vapor filters as custom plant engineering.

DVA Holland-Merten GmbH
Südharz OT RoßlaNew on Amplifa
About DVA Holland-Merten GmbH
DVA Holland-Merten GmbH, based in Südharz OT Roßla, develops, designs and manufactures process machines and apparatus for the process engineering industry, in particular based on vacuum technology. The portfolio includes paddle dryers (Merto-Dry), drum dryers and drum coolers (Merto-Drum), vacuum/pressure Nutsche filters (Merto-Fil), cone dryers and cone mixers, vacuum chambers and vapor filters. The apparatus is manufactured in carbon steel, stainless steel and alloy materials such as Hastelloy and implemented in versions in accordance with ATEX, FDA, GMP, CIP, SIP and AD 2000. The company supplies the chemical and pharmaceutical industries, the organic and food industries, the minerals, ores and building materials sector, as well as environmental technology and other industries such as electrical, automotive and aviation. In addition to manufacturing, DVA offers a pilot plant for feasibility testing, analysis, measurement and control technology, and delivery of peripherals such as vacuum pump units, condensers, temperature control systems and process control systems. Service, assembly and commissioning are also part of the scope of services.
- Site
- Südharz OT Roßla
- Processes
- Paddle dryers / vacuum paddle dryers (Merto-Dry), Drum dryers, drum coolers / vacuum drum dryers (Merto-Drum), (Vacuum/pressure) Nutsche filters (Merto-Fil) – filtering, washing, extracting, crystallizing,, Cone dryers / cone mixers, (Vacuum) chamber construction – freeze dryers, climate & test chambers, (vacuum) drying chambers, Vapor filters (dust separation from process gas), Custom plant engineering / contract manufacturing of process machines and apparatus, Service, assembly and commissioning
- Materials
- Carbon steels, Stainless steels, Hastelloy, Alloy materials, Vacuum technology, ATEX / FDA / GMP / CIP / SIP / AD 2000
- Certificates
- ATEX versions according to zone classification, FDA versions, GMP versions, CIP/SIP systems, AD 2000
- Industries
- Chemical / pharmaceutical, Organic and food industries, Minerals, ores, building materials, Environmental technology, Electrical industry, Automotive industry
- 01
Consulting and design
- 02
Engineering design
- 03
Pilot plant / test runs for feasibility assessment
- 04
Manufacturing and contract manufacturing
- 05
Assembly and commissioning
- 06
Service and analysis
Materials and Processes
Carbon steels
Used for cone dryers, Nutsche filters and vapor filters when no increased requirements for corrosion resistance apply.
Stainless steels
Standard protection for product-contact surfaces, e.g. for cone dryers with hygiene and batch purity requirements.
Hastelloy
High-grade alloy material for aggressive product media, especially in the chemical and pharmaceutical industries.
Vacuum technology
Core process for gentle drying of temperature-sensitive products, e.g. vacuum drum dryers from 10 mbar abs.
ATEX / FDA / GMP / CIP / SIP / AD 2000
Design standards according to which DVA develops, produces and manufactures plants.
Locations

Südharz OT Roßla
DEHeadquarters, engineering design, manufacturing, pilot plant, service and assembly
- Materials
- Carbon steels, stainless steels, Hastelloy, alloy materials
- Paddle dryers / vacuum paddle dryers (Merto-Dry), volume 50–20,000 l, -20 to +400 °C, -1 to 25 bar
- Drum dryers / double-drum dryers / vacuum double-drum dryers (Merto-Drum), heating surface 0.15–38 m², up to 2000 kg/h
- (Vacuum/pressure) Nutsche filters (Merto-Fil), filter area 0.12–12 m², volume 50–12,000 l
- Cone dryers / cone mixers, 50 l to 15 m³
- Vacuum chambers (freeze dryers, climate and test chambers, drying and melting chambers)
- Vapor filters
- Pilot plant with test apparatus
Plants and Apparatus





Inside the production











Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Paddle dryers / vacuum paddle dryers (Merto-Dry)Engineering | – | – | – | – | Carbon steels, Stainless steels, Hastelloy |
| Drum dryers, drum coolers / vacuum drum dryers (Merto-Drum)Engineering | – | – | – | – | – |
| (Vacuum/pressure) Nutsche filters (Merto-Fil) – filtering, washing, extracting, crystallizing,Engineering | – | – | – | – | – |
| Cone dryers / cone mixersEngineering | – | – | – | – | Carbon steels, Stainless steels, Hastelloy |
| (Vacuum) chamber construction – freeze dryers, climate & test chambers, (vacuum) drying chambersEngineering | – | – | – | – | – |
| Vapor filters (dust separation from process gas)Engineering | – | – | – | – | Carbon steels, Stainless steels, Alloy materials |
| Custom plant engineering / contract manufacturing of process machines and apparatusEngineering | – | – | – | – | – |
| Service, assembly and commissioningAssembly | – | – | – | – | – |
| Pilot plant – test apparatus / test runs for feasibility assessmentTesting | – | – | – | – | – |
| AnalysisTesting | – | – | – | – | – |
6 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Paddle dryers / vacuum paddle dryers (Merto-Dry) | DVA Holland-Merten GmbH Merto-Dry | – | Volume 50 to 20,000 l; temperature -20 to +400 °C; pressure -1 to 25 bar | – | Südharz OT Roßla |
| Drum dryers / double-drum dryers / vacuum double-drum dryers (Merto-Drum) | DVA Holland-Merten GmbH Merto-Drum | – | Heating surface 0.15–38 m²; temperature 30–200 °C; vacuum 10–1013 mbar abs; mass flow up to 2000 | – | Südharz OT Roßla |
| (Vacuum/pressure) Nutsche filters (Merto-Fil) | DVA Holland-Merten GmbH Merto-Fil | – | Filter area 0.12–12 m²; volume 50–12,000 l; temperature -10–200 °C; pressure -1–10 bar | – | Südharz OT Roßla |
| Cone dryers / cone mixers | DVA Holland-Merten GmbH | – | Sizes 50 l to 15 m³ | – | Südharz OT Roßla |
| Vacuum chambers (freeze dryers, climate & test chambers, drying chambers, melting chambers) | DVA Holland-Merten GmbH | – | – | – | Südharz OT Roßla |
| Vapor filters | DVA Holland-Merten GmbH | – | – | – | Südharz OT Roßla |
Additional services
Reference customers
Quality and Standards
DVA manufactures in accordance with design standards such as ATEX, FDA, GMP, CIP, SIP and AD 2000. In the pilot plant, test apparatus is operated for feasibility assessment of customer processes, complemented by analysis and measurement and control technology.
| Evidence | Südharz OT Roßla |
|---|---|
| ATEX versions according to zone classification | |
| FDA versions | |
| GMP versions | |
| CIP/SIP systems | |
| AD 2000 |
Company History
Over 40 years on the market as a partner in various industries (according to the website, without year specification)