SCHMIDT® SIGMAWIG ALL WELDED PLATE HEAT EXCHANGERS

Product catalog summary

Introduction
SIGMAWIG all welded plate heat exchangers are designed for high reliability in thermal processes such as cooling, heating, pasteurizing, evaporation, and condensation. They are particularly suitable for the chemical and pharmaceutical industries, industrial cooling, and heat balancing systems.

Specifications
The SIGMAWIG exchangers operate at pressures up to 25 bar and temperatures up to 250°C. They are constructed without gaskets, using TIG welding seams to prevent leakage and diffusion, making them ideal for handling aggressive or environmentally hazardous media.

Applications
SIGMAWIG exchangers are used in various applications, including chemical reaction control, temperature equalization, solvent cooling/heating, DEMI-water processing, and heat recovery in chemical processes. They are also effective in refrigerant evaporation and condensation.

Design and Construction
The exchangers feature a compact design with a fishbone geometry for optimal heat transfer through high fluid turbulence. The welded plate pack is clamped into a pressure frame, with standard connections including flanges and threads. All parts in contact with the product are made of stainless steel, with special alloys available upon request.

Connection Types
Standard flanged connections are available, including options with internal expansion joints for frequent temperature changes. Studded ports with O-ring sealing offer cost efficiency and flexibility for on-site modifications.

Advantages
The SIGMAWIG exchangers provide high security in critical processes, efficient heat transfer, and minimal space requirements. They are proven in over 10,000 installations worldwide.

Technical Details
The exchangers are available in various models (ST3, ST12, ST18, ST30, ST40) with different specifications for nozzle size, operating temperature, flow rate, and dimensions.

Global Presence
API Heat Transfer has a global presence with manufacturing facilities and sales support worldwide, ensuring comprehensive customer service.

Contact Information
For more information, contact API Heat Transfer through their global headquarters in Buffalo, NY, or visit their website.

Catalog excerpts

SCHMIDT® SIGMAWIG ALL WELDED PLATE HEAT EXCHANGERS

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SIGMAWIG – opens up new fields of application SIGMA plate heat exchangers are recognized world-wide for quality and reliability in thermal processes such as cooling, heating, pasteurising, evaporation and condensation. To meet the increasing requirements for plate heat exchangers in special applications, a new type of plate heat exchangers without gaskets called SIGMAWIG was developed particularly for:  Chemical industry  Pharmaceutical industry  Industrial cooling  Heat balancing systems The SIGMAWIG construction makes it possible to noticeably extend the application of plate heat exchangers...

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SCHMIDT® SIGMAWIG ALL WELDED PLATE HEAT EXCHANGERS-3

SIGMAWIG – one application out of a vast multitude More than 10.000 SIGMAWIG prove under tough process conditions SIGMAWIG – main connection types STANDARD FLANGED CONNECTION Availability of a variety of flanges—ranging from standards such as EN 1092 to ASME 16.5 as well as a number of other standards upon request. FLANGED CONNECTION WITH INTERNAL EXPANSION JOINTS A construction for applications with frequent temperature changes that is proven in more than 1,000 installations. STUDDED PORT WITH O-RING SEALING BETWEEN PLATE PACK AND PRESSURE FRAME The advantages of this connection type are not...

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SCHMIDT® SIGMAWIG ALL WELDED PLATE HEAT EXCHANGERS-4

SIGMAWIG – the optimal choice for critical process parameters Advantages Weldings replace gaskets Higher security level at critical process conditions e.g., Steam, thermal oil edible oil e.g., Condensation of refrigerants high pressure heating or low temperature networks Compact design Minimum space required, minimum installation, minimum piping Efficient heat transfer Homogeneous countercurrent flow Small liquid content Optimized control of process, higher level of security, when handling dangerous products Proven design, long-term experience in practice in a wide field of applications SIGMAWIG...

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SCHMIDT® SIGMAWIG ALL WELDED PLATE HEAT EXCHANGERS-5

SIGMAWIG – the all welded plate heat exchanger Technical details SIGMAWIG all welded plate heat exchangers are similar to gasketed plate heat exchangers because of the number of corrugated plates and do not include gaskets. The plates are sealed hermetically by TIG welded seams. The loading capacity of these connection exceeds the strength of gaskets. Cross section of plate pack The fishbone geometry of the flow channels built by the plates effects high turbulences on the fluids, which result in optimum heat transfer. The countercurrent flow arrangement allows most efficient heat transfer. The...

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SCHMIDT® SIGMAWIG ALL WELDED PLATE HEAT EXCHANGERS-6

A world of heat transfer solutions API Heat Transfer’s global presence includes manufacturing facilities, R&D locations, and sales support throughout the world, all focused on one goal—to better serve our customers. Langenmorgen 4 75015 Bretten Germany 2777 Walden Avenue Buffalo, NY, 14225 USA 156 Qingqiu Street, 3rd District Suzhou Industrial Park Suzhou, Jiangsu 215126 China For more information about our heat transfer products, contact our API Heat Transfer sales representative or visit apiheattransfer.com or apiheattransfer.de GLOBAL HEADQUARTERS 2777 Walden Avenue | Buffalo, NY 14225 USA...

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