Sigmadual - Semi-Welded Plate Heat Exchanger

The product side is sealed by laser-weldings around the flow channels and with ring gaskets in the port areas.
The flow channels of the service side are sealed by elastomer gaskets, whereas the ports are laser-welded.

Increased operating safety by double welding for product separation.

The modular construction insures a high flexibility. Adjustments to changed operating parameters can easily performed by exchange or adding of SIGMADUAL modules.

The applications are in all industries, especially in the process and refrigeration industries.

Suitable for operating pressures up to 35 barg and temperatures from -29°C up to 200°C.
All current plate and gasket materials are available.

• Industrial Markets            
• Automotive plants           
• Oil and Gas           
• Process Industries          
• Chemical            
• Metal processing           
• Petrochemical Refrigeration             
• Wastewater treatment

Operating parameters

• Temperature: -29°C – 200°C
• Pressure: Vacuum to 35bar
• Capacities: up to 2000 m³/h
• Connections: 3″ to 14″- Studded or Flanged

Technical parameters

• Plates:  
• Standard: AISI 304 (1.4301), AISI 316L (1.4404), AISI 316Ti (1.4571)
• Exotics: AISI 904, SMO 254, Nickel Alloy, Ti, and Ti-Pd Alloy
• Thickness: 0.6 mm to 0.8 mm
• Gaskets:  
• Standard: Nitrile Rubber Gasket, EPDM Rubber, Chloroprene Rubber
• Exotics: HNBR, NBR-HT, FPM/FKM, Butyle, PTFE coated (SIGMACOAT),Food Industry Certified Gaskets
• Attachment Method: SIGMAFIX Adhesive-free Gasket, or Glued Gasket
• Frame: Painted Carbon Steel
• Connections:  
• Standard: Studded with optional 304/316 liner, flange, FPT
• Exotics: Ti, SMO, Hastelloy, and 904L
• Codes and Standards: ASME, PED, ABS, LRS, GL, BV, GOST