GESTRA VDM Mixing Cooler | High-Efficiency Steam Desuperheater Solution

GESTRA VDM Mixing Cooler | High-Efficiency Steam Desuperheater Solution
GESTRA VDM Mixing Cooler | High-Efficiency Steam Desuperheater Solution
GESTRA VDM Mixing Cooler | High-Efficiency Steam Desuperheater Solution

GESTRA VDM Mixing Cooler | High-Efficiency Steam Desuperheater Solution

  • Max. service pressure
    • 0.5 bar g
    • 7 psig
  • Max. temperature
    • 111 °C

Steel EN reference: S235JR+N (ASTM equivalent: A 283 Grade C).
Austenitic stainless steel on request.

Mixing coolers are used to cool hot waste water that can no longer be used for heat recovery and is therefore discharged into a pit or drain.
Typical applications are, for example: process plants where contaminated, hot waste water is being formed, steam boiler plants where the blowdown is cooled with untreated water, mixing cooler for flash steam.
When the VDM is used to cool the blowdown from a steam boiler, by using of cooling water it may cause the formation of sludge by precipitation of carbonates. This can be avoided by flushing regularly, and if necessary by the addition of acid.

Hot-water flowrate [t/h] *) 0.3 0.6 1.5 3 5 8.5 15
Volume l 50 100 250 390 850 1370 2100
Dimensions [mm] D 324 400 600 600 800 1000 1200
H 625 625 700 1200 1450 1450 1450
H1 795 825 980 1480 1806 1882 1960
H2 1095 1125 1278 1778 2106 2182 2260
H3 435 450 490 690 928 966 1005
L 624 700 900 900 1100 1300 1500
N8 Hot-water inlet DN 40 40 40 65 100 100 150
N7 Mixed-water outlet DN 40 40 80 100 150 200 200
N1 Vent DN 40 40 80 100 150 200 300
N3 Cooling-water inlet DN 15 15 20 25 40 50 50
N2 Cooling-water inlet DN on request
N5 Drain DN 25 25 25 40 40 40 80
Materials Steel EN reference: S235JR+N (ASTM equivalent: A 283 Grade C)
Approx. weight [kg] 85 95 105 140 250 340 420

*) When considering the use of the VDM as a blowdown receiver, it is essential to take account of the maximum possible flowrates from all blowdown valves connected to the VDM.

Standard design for hot-water flowrates of up to 15 t/h. Higher flowrates on request.

  1. Vessel without equipment
  2. Vessel with equipment, but supplied

The mixing coolers are made of 5 mm steel plate in welded construction. The inside is untreated, the outside provided with an antirust paint. The equipment is supplied with all necessary connections and supports.

On request: Additional cooling-water spray nozzle, vessel made of austenitic stainless steel.

Flanged to EN 1092-1 PN 16.

GESTRA VDM Mixing Cooler | High-Efficiency Steam Desuperheater Solution

GESTRA: The Ultimate Solution for Industrial Steam & Fluid Control Systems

The GESTRA VDM Mixing Cooler is a premium steam desuperheater engineered to deliver accurate, reliable, and energy-efficient steam temperature control in demanding industrial environments. Designed by GESTRA, a global leader in steam and condensate management solutions, the VDM Mixing Cooler ensures optimal steam conditions while protecting downstream equipment and improving overall system efficiency.

Whether used in power plants, chemical processing, food & beverage, oil & gas, or manufacturing industries, the GESTRA VDM Mixing Cooler provides unmatched performance and long-term operational reliability.

A GESTRA VDM Mixing Cooler is a direct-contact steam desuperheater that precisely reduces superheated steam temperature by injecting finely atomized cooling water directly into the steam flow. The result is uniform, controlled, and safe steam temperatures that meet process requirements without thermal shock.

✅ Precise Steam Temperature Control

The GESTRA VDM Mixing Cooler ensures accurate desuperheating, preventing overheating and ensuring stable downstream processes.

✅ High Thermal Efficiency

Optimized water injection and mixing technology guarantee efficient heat transfer and minimal energy loss.

✅ Robust Industrial Design

Manufactured from high-quality materials, the VDM Mixing Cooler withstands high pressure and temperature conditions for long service life.

✅ Equipment Protection

By eliminating excessive steam temperatures, it protects valves, heat exchangers, turbines, and pipelines from thermal damage.

✅ Low Maintenance Requirements

Simple construction and proven design reduce downtime and maintenance costs.

  • Direct steam-to-water mixing technology
  • Fast response time to temperature changes
  • Uniform temperature distribution
  • Suitable for high-pressure steam systems
  • Designed for vertical or horizontal installation
  • Compatible with GESTRA control valves and automation systems

The GESTRA VDM Mixing Cooler is widely used in:

  • Power generation plants
  • Steam distribution networks
  • Chemical and petrochemical industries
  • Food and beverage processing
  • Pharmaceutical manufacturing
  • Paper and pulp mills
  • Oil & gas facilities

Its versatility makes it the ideal solution for any process requiring accurate steam desuperheating.

Compared to conventional steam coolers, the GESTRA VDM Mixing Cooler offers:

  • Superior temperature accuracy
  • Faster control response
  • Longer operational lifespan
  • Lower total cost of ownership
  • Proven German engineering quality

GESTRA’s decades of experience in steam technology make the VDM Mixing Cooler a trusted solution worldwide.

Optimized steam temperature control directly improves energy efficiency, reduces steam losses, and minimizes fuel consumption. By maintaining ideal steam conditions, the GESTRA VDM Mixing Cooler supports sustainable and cost-effective industrial operations.

What is the function of a GESTRA VDM Mixing Cooler?

It reduces superheated steam temperature to a controlled level using direct water injection.

Is GESTRA VDM Mixing Cooler suitable for high-pressure systems?

Yes, it is specifically designed for high-pressure and high-temperature steam applications.

Can it be integrated into existing steam systems?

Absolutely. The GESTRA VDM Mixing Cooler is compatible with most industrial steam networks.

Does it require special maintenance?

No. Its robust design ensures minimal maintenance requirements.

If you are looking for a high-quality steam desuperheater with proven performance, the GESTRA VDM Mixing Cooler is the ideal choice. It delivers precision, reliability, and efficiency that industrial operations demand.

📩 Contact us today for technical consultation, pricing, and availability of GESTRA VDM Mixing Cooler for your steam system.

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