Plate and Frame Heat Exchanger




The Plate and Frame Design is an Exceptional Choice!

No other technology is more compact, efficient, or flexible than Standard Xchange Plateflow, not even other competitors such as Alfa Laval, Tranter, Danfoss and Kelvion can compare.

  • Easy to install and move
  • Readily expandable and easy to inspect or clean
  • Opening or closing the unit typically does not require disconnecting the piping
  • Plateflow has vertical flow, so inlet and outlet connections are above and below each other and on the same plane for easy installation
  • Tightening bolt design allows opening and closing the unit from frame plate
  • Studded connections withstand higher piping loads than nozzles
  • With studded connection, no welding is required

Compact Design

Plateflow heat exchangers provide more heat transfer in less space.  The Plateflow design is compact and efficient.

  • Plateflow models have higher surface area to volume ratios than conventional shell and tube heat exchangers
  • Plateflow offers superior heat transfer coefficients compared to shell and tube heat exchangers.  This obtained through the unique plate designs that generate high turbulence.
  • Plateflow offers “true” countercurrent flow.  This maximizes the mean temperature difference between the fluids

These attributes allow Plateflow to perform with one-third to one-fifth the surface area of a conventional shell and tube heat exchanger for the same application.  The superior heat transfer capabilities make Plateflow an exceptional choice for heat transfer applications like heat recovery, applications with viscous fluids and large temperature cross situations.

Versatility and Adaptable Construction 

A wide variety of plate construction materials are available, included 304 or 316 Stainless Steel, Titanium Hastelloy, Incolloy, and other metals.  Various connection types are available to match the application requirements.  Gasketed, semi-welded, double wall and free flow plates are designed to meet a wide variety of applications.


Plateflow models include a one-piece molded gasket.  This standard gasket designed with two rings to confine each fluid to the appropriate port region of the plate, a field region of the gasket to confine the fluid to the heat transfer area of the plate and a vented region in between.  This design creates a double gasket with a leak path to atmosphere through the vented region to prevent any cross contamination of the fluids due to a gasket failure.  A leak due to a gasket failure is detected as a leak to atmosphere prior to any chance for cross contamination.


The nature of the basic Plateflow design includes a double gasketing feature for extra protection against gasket failure.  With double-wall units, that additional protection is extended to guard against plate failure as well.  Two plates are positioned together with a unique sealing mechanism at the port holes to form one assembly with an air space between the plates.  This unique feature protects against contamination of one fluid by another.  If one of the plates should corrode and develop a leak, the fluid would enter the air space and exit to the atmosphere, instead of entering the opposing passageway.

Welded Plate

The semi-welded Plateflow design expands the application envelope of plate heat transfer technology to applications that are aggressive to standard elastomers and other applications where leak prevention is critical.

The semi-welded Plateflow design utilizes two plates laser welded together to form a cassette.  The cassettes form channels within which the welded-side fluid flows.  Two ring gaskets and a field gasket are used between adjacent cassettes in the same fashion as a gasket in the standard Plateflow design.  The ring gaskets confine the welded side fluid between the adjacent cassettes and can be made of Chloroprene or a more traditional elastomer gasket.  The design eliminates the welded-side’s exposed gasket surface by approximately 90%.  The semi-welded Plateflow is exceptional for refigerant, aggressive chemical, or any application where reducing the fluid’s contact with elastomers is desired.


Free-Flow units offer the same features of the basic Plateflow models, with the added benefit of exceptional clog-resistance for high-fiber or coarse-fiber applications.

To stand above other competitors like APV, API Schmidt, Paul Mueller and Taco, the Standard Xchange Free-flow models feature minimum or no metal-to-metal contact points between adjacent plates to reduce points for particles to catch on the plates.  Free-flow models can handle fluids with particulate, pulp or fibrous materials up to 6mm in diameter and 5mm long.  The free-flow feature is heat reclamation in pulp and paper or chemical processing, where wash water, white water, fibrous water slurries or high viscosity fluids are used.

Industry Codes Available

  • ASME Section VIII Division 1 with U-1 Stamp Construction
  • ASME Section II with N Stamp Construction
  • Canadian CRN
  • EC Pressure Equipment Directive
  • China ML
  • Brazil NR-13
  • API 662
  • ASCE-7, IBC, UBC
  • AHRI Standard 400
  • Others Upon Request