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KOREX – Fertigung

KOREX manufactures AIR-SEP® pressure maintenance stations for pressure maintenance, expansion, degassing and make-up water supply in heating, cooling and refrigeration systems.

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KOREX Verfahrenstechnik GmbH

Gilching near MunichNew on Amplifa

1976AIR-SEP® process developed
over 20,000AIR-SEP® systems sold
12European sales countries
21Service points national and international
HRB 209362, Amtsgericht MünchenCommercial register

About KOREX Verfahrenstechnik

KOREX Verfahrenstechnik GmbH, based in Gilching near Munich, develops, produces and distributes energy- and cost-saving devices and systems for performance optimization of heating, cooling and solar systems. The core product is the AIR-SEP® pressure maintenance station, which combines pressure maintenance, expansion, adiabatic degassing, fully automatic make-up water supply and cleaning in a single unit. The systems are used in closed heating systems, chilled water cooling systems, systems with antifreeze agents, deep-freeze circuits down to -50 °C as well as in local and district heating systems. The stainless steel expansion and degassing vessel is made of material 1.4301, the cladding made of Sendzimir galvanized sheet steel; for aggressive media the company delivers the systems completely in stainless steel, including the pressure maintenance pump, overflow valve, lid, bases and claddings. In addition, system accessories such as magnetite filters, water treatment, make-up unit PRO and individual custom solutions up to the megawatt performance range are offered. Manufacturing takes place at the location in Germany, distribution in Germany via the three-stage specialized wholesale trade as well as to 12 European countries with 21 service points.

Site
Gilching
Processes
Development and production of AIR-SEP® pressure maintenance stations (pressure maintenance,, AIR-SEP® thermal pre-degassing unit (patented) for deep-freeze circuits down to -50°C, Manufacture of AIR-SEP® systems completely in stainless steel for aggressive media (pressure, Consulting/design (online design), Development, production and distribution of pressure maintenance stations, Maintenance by factory customer service, Custom solutions/individual system construction, Sales representatives/distribution via specialized wholesale trade
Materials
Stainless steel (expansion/degassing vessel), Sendzimir galvanized sheet steel (cladding), Stainless steel (centrifugal pump: shaft, impellers, chambers), Stainless steel 1.4301, Sendzimir galvanized sheet steel
Certificates
Design according to VDI 4708 and DIN EN 12828, Accessories according to DIN 1988 / DIN EN 1717 with DVGW-tested system, Annual maintenance by factory customer service (warranty up to 5 years)
Industries
Heating industry, Refrigeration and air conditioning technology, Local and district heating, Solar systems, Plant engineering
  1. 01

    Consulting and online design

  2. 02

    Development and construction

  3. 03

    Manufacture of vessels and assemblies (stainless steel 1.4301, galvanized sheet

  4. 04

    Assembly and wiring of the pressure maintenance stations

  5. 05

    Factory pre-setting

  6. 06

    Distribution via specialized wholesale and sales representatives

  7. 07

    Maintenance by factory customer service

Materials and Processes

1.4301

Stainless steel 1.4301

Material of the expansion and degassing vessel as well as media-carrying assemblies such as pump shaft, impellers, chambers, lid and bases.

StZ

Sendzimir galvanized sheet steel

Material of the anthracite-grey, distance-mounted cladding with insulating effect.

Location

Standort Gilching

Gilching

DE

Headquarters with development, production and sales

Part weight / size
Device weight 81–536 kg (type AS-T 100 to 2400)
Materials
Stainless steel 1.4301, Sendzimir galvanized sheet steel

Products and Components

AIR-SEP® pressure maintenance station type AS-T 150 (Gen5)
AIR-SEP® pressure maintenance station type AS-T 150 (Gen5)Stainless steel and sheet metal fabrication · Heating and refrigeration technology
AIR-SEP® pressure maintenance station with technical level
AIR-SEP® pressure maintenance station with technical levelAssembly · Heating, cooling and refrigeration systems
AIR-SEP® type AS-T 100/150
AIR-SEP® type AS-T 100/150Pressure maintenance · Local and district heating
AIR-SEP® with thermal insulation
AIR-SEP® with thermal insulationSystem completion · Refrigeration systems
AIR-SEP® with PE make-up water tank
AIR-SEP® with PE make-up water tankMake-up unit PRO · Cooling technology
AIR-SEP® Gen5 view
AIR-SEP® Gen5 viewStainless steel fabrication · Plant engineering

Inside the production

Schematic diagram AIR-SEP® type AS-T 100–2400 (Gen5)
Schematic diagram AIR-SEP® type AS-T 100–2400 (Gen5)
Dimensional diagram AIR-SEP® type AS-T 100–2400 (Gen5)
Dimensional diagram AIR-SEP® type AS-T 100–2400 (Gen5)
AIR-SEP® system component
AIR-SEP® system component
AIR-SEP® in system use
AIR-SEP® in system use
AIR-SEP® pressure maintenance in system context
AIR-SEP® pressure maintenance in system context

Industries

Heating industryRefrigeration and air conditioning technologyLocal and district heatingSolar systemsPlant engineering

Processes & technical limits

ProcessesToleranceMax. partWeightLot sizeMaterials
Development and production of AIR-SEP® pressure maintenance stations (pressure maintenance,Engineering––––Stainless steel 1.4301, Sendzimir galvanized sheet steel
AIR-SEP® thermal pre-degassing unit (patented) for deep-freeze circuits down to -50°CEngineering––––Stainless steel
Manufacture of AIR-SEP® systems completely in stainless steel for aggressive media (pressureAssembly––––Stainless steel

Additional services

Consulting/design (online design)Development, production and distribution of pressure maintenance stationsMaintenance by factory customer serviceCustom solutions/individual system constructionSales representatives/distribution via specialized wholesale trade

Quality

AIR-SEP® pressure maintenance stations are designed according to VDI 4708 and DIN EN 12828. The factory completely pre-set and wired devices are monitored via the SmartControl control system with pressure sensors, pressure transducers and level sensors.

EvidenceGilching
Design according to VDI 4708 and DIN EN 12828
Accessories according to DIN 1988 / DIN EN 1717 with DVGW-tested system
Annual maintenance by factory customer service (warranty up to 5 years)

Company History

  1. 1976

    Development of the first AIR-SEP® process; KOREX Verfahrenstechnik GmbH took over the complete know-how including development, production and sales.

  2. 2025

    AIR-SEP® pressure maintenance stations of the 5th generation with new dynamic overflow unit available.

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