SIGMADUAL- Semi-Welded Plate Heat Exchanger

sigmadual semi welded plate


API Heat Transfer SIGMADUAL semi-welded plate heat exchangers feature plates that are welded using advanced laser welding techniques.

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.

Contact API Schmidt-Bretten


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

Temperature-29°C – 200°C
PressureVacuum to 35bar
Capacitiesup to 2000 m³/h
Connections3″ to 14″- Studded or Flanged
StandardAISI 304 (1.4301), AISI 316L (1.4404), AISI 316Ti (1.4571)
ExoticsAISI 904, SMO 254, Nickel Alloy, Ti, and Ti-Pd Alloy
Thickness0.6 mm to 0.8 mm
StandardNitrile Rubber Gasket, EPDM Rubber, Chloroprene Rubber
ExoticsHNBR, NBR-HT, FPM/FKM, Butyle, PTFE coated (SIGMACOAT),Food Industry Certified Gaskets
Attachment MethodSIGMAFIX Adhesive-free Gasket, or Glued Gasket
FramePainted Carbon Steel
StandardStudded with optional 304/316 liner, flange, FPT
ExoticsTi, SMO, Hastelloy, and 904L
Codes and StandardsASME, PED, ABS, LRS, GL, BV, GOST