GESTRA VDM Mixing Cooler | High-Efficiency Steam Desuperheater Solution

Pressure / Temperature Rating

GESTRA VDM Mixing Cooler | High-Efficiency Steam Desuperheater Solution

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

Materials

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

Application

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.

Capacity Range

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

Supply

Vessel without equipment
Vessel with equipment, but supplied

Design

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.

Connections

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

GESTRA VDM Mixing Cooler – Precision Steam Temperature Control You Can Trust

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.

What Is a GESTRA VDM Mixing Cooler?

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.

Key Benefits of GESTRA VDM Mixing Cooler

✅ 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.

Technical Features of GESTRA VDM Mixing Cooler

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

Applications of GESTRA VDM Mixing Cooler

The GESTRA VDM Mixing Cooler is widely used in:

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

Why Choose GESTRA VDM Mixing Cooler Over Other Desuperheaters?

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.

GESTRA VDM Mixing Cooler and Energy Efficiency

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.

Frequently Asked Questions (FAQ)

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.

Buy GESTRA VDM Mixing Cooler – Reliable Steam Control Solution

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.