Schmidt® SIGMADUAL Semi-Welded Plate Heat Exchangers

API Heat Transfer SIGMADUAL semi-welded plate heat exchangers feature plates that are welded using advanced laser welding techniques. Two plates are welded together and can be fitted with a Viton® O-Ring and/or Teflon® gasket liner. The resulting plate pack has every other plate fully serviceable, while maintaining integrity of the welded plate pair. This is especially suitable for critical fluids and gases, such as ammonia or caustic process chemicals where fluid loss is not acceptable. In the case of ammonia refrigeration, the reduced volume results in significant savings.

*Teflon is a registered trademark of E. I. du Pont de Nemours and Company Semi-Welded Plate Pair with *Teflon Gasket

Applications

  • Food and Beverages

  • Industrial Equipment

  • Oil and Gas

  • Process Industries

  • Data Centers

Temperature
-40°F - 320°F (-29°C - 200°C)
Pressure
Vacuum to 460psig (35barg)
Capacities
up to 3500 GPM (2000m³/h = 8806GPM)
Connections
3" to 14"- Studded or Flanged
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

Get a Project Estimate

Discuss specs, custom solutions, and integration