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Gasketed Plate

Schmidt® SIGMA Gasketed Plate Heat Exchangers

Plate heat exchangers use corrugated plates stacked between a fixed and movable pressure plate. As virtually all of the material is used for heat transfer, plate heat exchangers can have large amounts of effective heat transfer surface in a small footprint. It is not uncommon that a plate heat exchanger will have the same thermal capacity as a shell and tube five times larger. Our plate heat exchangers incorporate superior design features to ensure long-term performance and customer satisfaction. 

Performance notes. 

  • Unique corrugation pattern pressed onto each plate produces the highest overall heat transfer rate by assuring turbulent flow and excellent fluid distribution across the entire surface
  • True counter current flow and high heat transfer rate allows our plate heat exchangers to economically handle close temperature approach requirements 
  • Highest quality gaskets precisely fit the plate grooves for positive sealing and ease of maintenance
  • Superior clip-on gasket design ensures proper fit during closing of the unit
  • Double sealing design prevents the possibility of mixing the two process fluids; leak detect feature ensures any leakage is to the atmosphere
  • Zinc coated hardware provides long life
  • All bolted construction for easier service
  • Low volumetric fluid hold-up provides quicker response to heating and cooling demands, while reducing costs for more expensive process fluids
  • Readily expanded for greater capacities, or totally new applications
  • Available in a variety of plate sizes for industrial, HVAC, power, or food industry applications

Operating Parameters.

Temperature -40°F – 400°F (-29°C – 200°C)
Pressure Vacuum to 400 psig (30bar)
Capacities In excess of 20,000 GPM (4,500m³/h)
Connections Up to 20 in. (DN500)

Technical Parameters.

Plates  
Standard

AISI 304 stainless steel (1.4301) 
AISI 316L stainless steel (1.4404)
AISI 316TI stainless steel (1.4571)

Exotics

AISI 904 stainless steel, SMO 254, Nickel alloys, pure nickel, Ti and Ti-Pd alloy

Thickness 0.4 mm to 1.15 mm
Gaskets  
Standard Nitrile rubber gasket, EPDM rubber, 
chloroprene rubber
Exotics

HNBR, NBR-HT, FPM/FKM, butyl, PTFE coated (SIGMACOAT), food industry certified gasket, AFM hard gaskets, others available

Attachment Method SIGMAFIX adhesive-free gasket, or glued gasket
Frame Painted carbon steel, or stainless steel (solid and clad)
Connections  
Standard Studded with option for liner, flanges (ANSI, DIN), food stuff connections
Exotics Ti, SMO, hastelloy, and 904L, others available
Codes and Standards ASME, PED, ABS, LRS, GL, BV, GOST

 

Applications.

  • Chemical
  • Pharmaceutical
  • Food and beverage
  • Dairy products
  • Petrochemical/oil mining
  • Power plant central or auxiliary cooling
  • Lube oil cooling