Manufacture, general overhaul and reproduction of industrial pumps and castings for water and wastewater
DIA Pumpen GmbH
LangenfeldNew on Amplifa
About DIA Pumpen
DIA Pumpen GmbH manufactures centrifugal pumps, channel impeller pumps, diaphragm pumps, side channel pumps and submersible motor pumps for clean liquids, wastewater, dirty water and slurries, as well as complete systems such as vacuum pump systems, wastewater pumping systems and mobile chopping pumps. The company also specializes in manufacturer-independent maintenance and general overhaul of large wastewater centrifugal pumps from various manufacturers, including the reproduction of no longer available castings such as impellers, wear plates and shafts in small quantities using patterns. Production is carried out in grey cast iron, spheroidal graphite cast iron, bronze, cast steel, stainless steel and aluminium; diaphragm pumps are also available with rubber lining. Every repaired machine is run on the company's own test bench before delivery, with a test report on request. The company was founded in 1999 in Langenfeld and continues the product range of the DIA Pumpenfabrik Hammelrath & Schwenzer GmbH & Co. KG, founded in Düsseldorf in 1896.
- Site
- Langenfeld
- Processes
- Manufacture of centrifugal pumps (self-priming SZ/A, volute casing, single-stage, open impeller), Manufacture of centrifugal pumps in block design with electric motor SZ/GE, Manufacture of centrifugal pumps in block design with petrol or diesel engine SZ/GB+GD, Manufacture of self-priming channel impeller pumps SZK/SZR (single-channel, two-channel, sludge d, Manufacture of diaphragm pumps SM (oscillating positive displacement pump, flap valves), Manufacture of diaphragm pumps SL (ball valves, single-cylinder), Manufacture of diaphragm pumps SH (ball valves, one to three cylinders), Manufacture of side channel pumps SON/SRN (self-priming)
- Materials
- Grey cast iron, Spheroidal graphite cast iron, Bronze, Cast steel, Stainless steel, Aluminium, Rubber lining, Cast reproduction from patterns
- Certificates
- Test bench run before delivery, Test report on request, ISO 9001
- Founded
- 1999 (pred
- Industries
- Wastewater/water treatment, Industrial pump technology, Drainage, Excavation pit/drainage water applications
- 01
Consulting and design
- 02
Cast reproduction of impellers, wear plates and shafts
- 03
Manufacture of pumps and pump units
- 04
Assembly and painting
- 05
Test bench run with test report
- 06
Service, spare parts supply and general overhaul
Materials & Processes
Grey cast iron
Base material for volute casings and pump parts of centrifugal pumps, channel impeller pumps and diaphragm pumps.
Spheroidal graphite cast iron
Material for heavily stressed casing and impeller components with contaminated and abrasive media.
Cast steel
Used for highly stressed pump parts with abrasive and solids-laden liquids.
Bronze
Material for corrosive media in centrifugal pumps and diaphragm pumps.
Stainless steel
For pump components with corrosive and abrasive liquids.
Aluminium
Material for diaphragm pumps of the SM series.
Rubber lining
Wear-protection lining for diaphragm pumps with abrasive media such as sludge and suspensions.
Cast reproduction from patterns
Reproduction of no longer available castings (impellers, wear plates, shafts) in small quantities.
Langenfeld Site
Langenfeld
DEHeadquarters, sales, manufacturing, service
- Lot size
- Single-unit production, small series
- Materials
- Grey cast iron, spheroidal graphite cast iron, bronze, cast steel, stainless steel, aluminium
- Test bench for pumps
Pumps & Components
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Manufacture of centrifugal pumps (self-priming SZ/A, volute casing, single-stage, open impeller)Engineering | – | – | – | – | Grey cast iron, Spheroidal graphite cast iron, Bronze, Cast steel, Stainless steel |
| Manufacture of centrifugal pumps in block design with electric motor SZ/GEEngineering | – | – | – | – | Grey cast iron, Spheroidal graphite cast iron, Bronze, Cast steel, Stainless steel |
| Manufacture of centrifugal pumps in block design with petrol or diesel engine SZ/GB+GDEngineering | – | – | – | – | Grey cast iron, Spheroidal graphite cast iron, Bronze, Cast steel, Stainless steel |
| Manufacture of self-priming channel impeller pumps SZK/SZR (single-channel, two-channel, sludge dEngineering | – | – | – | – | Grey cast iron, Spheroidal graphite cast iron, Bronze, Cast steel, Stainless steel |
| Manufacture of diaphragm pumps SM (oscillating positive displacement pump, flap valves)Engineering | – | – | – | – | Grey cast iron, Aluminium, Bronze, Stainless steel |
| Manufacture of diaphragm pumps SL (ball valves, single-cylinder)Engineering | – | – | – | – | Grey cast iron, Rubber lining |
| Manufacture of diaphragm pumps SH (ball valves, one to three cylinders)Engineering | – | – | – | – | Grey cast iron, Rubber lining |
| Manufacture of side channel pumps SON/SRN (self-priming)Engineering | – | – | – | – | – |
| Reproduction of castings (impellers, wear plates, shafts) using patterns forCasting | – | – | – | – | Grey cast iron, Spheroidal graphite cast iron, Bronze, Cast steel, Stainless steel |
| Manufacturer-independent maintenance and general overhaul of wastewater centrifugal pumps incl.Testing | – | – | – | – | – |
| Repair of pumps from all manufacturers (including third-party products), spare parts supply,Assembly | – | – | – | – | – |
| Single-unit production of pumps and systems to customer specificationsEngineering | – | – | – | – | – |
| System technology: vacuum pumping systems, wastewater pumping systems, mobile chopping pumps,Engineering | – | – | – | – | – |
1 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Test bench for pumps (test run before delivery, test report possible) | – | – | – | – | Langenfeld |
Additional services
Quality & Testing
All repaired machines are run on the company's own test bench before delivery; a test report is prepared on request. After the general overhaul, wear parts, bearings and clearances correspond to as-new condition or better.
| Evidence | Langenfeld |
|---|---|
| Test bench run before delivery | |
| Test report on request | |
| ISO 9001 |
Company History
- 1896
Foundation of the DIA Pumpenfabrik Hammelrath & Schwenzer GmbH & Co. KG on 1 June 1896 in Düsseldorf-Bilk.
- 1998
Shareholders' resolution to liquidate; discontinuation of all sales activities as of 31.1.1999.
- 1999
Foundation of DIA Pumpen GmbH on 1 February 1999 in Langenfeld by former employees; Georg Hoffmann appointed managing director; takeover of know-how, technical equipment and data processing as well as continuation of the entire product range.
- 2003
Steadily increasing demand for maintenance and general overhaul of large wastewater pumps from various manufacturers; consistent focus on this segment.