Gasketed plate heat exchangers

Plate & frame construction

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Design and function

Gasketed plate heat exchangers consist of a set of adjoining embossed plates with apertures.

The plates are assembled at a 180° angle to each other, resulting in a flow gap. The gasket, which is mechanically secured or glued onto every plate, ensures that the flow gaps are securely sealed to the outside and from the second medium involved in the heat exchange.

The plate assembly is mounted in a frame and compressed with tightening bolts between the fixed plate and the movable plate.

The gaskets of a plate heat exchanger experience a normal fatigue process over the course of their service life. Depending on the conditions of use, the plate assembly can be re-tightened several times until the lower limit is reached.

The connections of the media involved in the heat exchange are on the fixed plate, but can also be on the moveable plate for multiple-pass flows. (see “Flow diagram”).

Our product range includes single and multiple-pass plate heat exchangers with heat exchange surfaces of up to 2,000 m².

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Technical data

Heat exchange surface per plate: 0.04 - 3 m²
Max. operating pressure: 25 bar
Max. operating temperature: 200°C


Our plates come with a double gasket at the inlet and outlet to prevent mixing of the two media. If designed as a safety heat exchanger, double plates are provided with a special gasket system.

Special series

  • Safety plate heat exchangers (FPDW)
  • Stainless steel versions for food and pharmaceutical applications
  • Plate heat exchangers in redundant configuration, installed as a compact unit on base frame, incl. switch-over valve, thermostat and safety valves

Combination of plates and gaskets

FUNKE heat transfer plates are known for their thermodynamically and hydraulically optimised embossing, resulting in compact and cost-effective solutions.

Platten für gedichtete Plattenwärmetauscher

Standard plate materials

  • 1.4301 (AISI 304)
  • 1.4404 / 1.4401 (AISI 316L/AISI 316)







Special plate materials

Depending on the application different plate materials are being used:

  • 1.4539 (N08904 / 904L)
  • 1.4547 (254 SMO / S31254)
  • 2.4066/2.4068 (Nickel 200 / Nickel 201)
  • 2.4602 (Alloy C-22)
  • 2.4819 (Alloy C-276)
  • 2.4605 (Alloy 59)
  • 3.7025 (Titan Gr. 1) / 3.7225 (TiPd, Titan Gr. 11)
  • Tantal

Gasket material

  • NBR in various qualities
  • EPDM in various qualities
  • Chloroprene
  • Butyl
  • FPM (Viton) in various qualities
  • etc.

Gasket attachment

  • Mechanically secured gaskets (standard)
  • Glued gaskets
Benefits of FUNKE gasketed plate heat exchangers

Your benefits
at a glance

Plate pack

  • High thermal conductivity
  • Highly efficient self-cleaning
  • Unique FUNKE offset design
  • Optical gasket identification (colour coding)


  • Compact design
  • Highly flexible (upgrade/downgrade)
  • Easy to service and maintain
  • Modular system means short production times
  • Tiered plate guiding bar (easier plate installation)


  • Rubber mouldings
  • Metal liners
  • Welding neck flange
  • Tri-Clamp
  • Dairy pipe
  • Aseptic

Possible applications

HVAC Industry Power Plants Chemistry/
Renewable Energies Technology
District heating/cooling Hydraulics Central cooling Rafineries and processing
(PE, PP etc.)
Geothermal plants
Thermal power stations Automotive industry Lubricating oil cooler Basic chemistry
Acids, alkalines etc.)
Solar power plants
Heating, ventilation, air conditioning Process Technology
(thermal plants, plastics etc.)
Generator cooling Special chemistry
(Adhesives, coatings etc.)
Water power plants
Swimming pool technology Surface treatment Auxiliary system cooling Fine chemistry Bioenergy
Supply technology Compressor systems   Pharmaceutical industry Wind power plants
  Food industry     Fuel cell technology

Device usages

  • Energy recovery
  • Cooling/heating products
  • Creating/condensing steam
  • Product temperature control

PWT Explosionszeichnung

Design of a
plate heat exchanger

  1. Fixed plate
  2. Movable plate
  3. Support column
  4. Carrying bar
  5. Lower plate guiding bar
  6. Carrier roller
  7. Tightening bolt and nuts
  8. Fixing bolts
  9. Rubber/metal liners
  10. Gaskets
  11. Heat transfer plates
  12. Name plate

Flow diagram/media flow

Plate heat exchangers can feature single or multiple-pass configurations depending on the requirements, with the single-pass configuration most commonly used.

The advantage here is that the movable plate can be removed for maintenance and servicing without having to disconnect the process connections as all the connections are located on the fixed plate.

Single-pass PHEs are most commonly used.

In single-pass PHEs, all inlet and outlet pipes are connected to the fixed plate, i.e. on the same side.

Multiple-pass PHEs may be required if there are small temperature differences between the flow media. In these systems, the connection pipes are located on both sides of the fixed and movable plate.

The media flow through the plate package multiple times according to the pass configuration.

Flow diagram

Single-pass Flow diagram
Single-pass flow diagram
all connections are located on the fixed plate

Multiple-pass Flow diagram
Multiple-pass flow diagram
the connections are located on the hard plate and the movable plate

Media flow

Pwt 1
Pwt 2
Pwt 3


Brochure Gasketed Plate Heat-Exchangers

Brochure Gasketed Plate Heat-Exchangers


Ingo Meyer

B. Eng.

Ingo Meyer

Manager PHE
Sales & Thermal Design

FUNKE Wärmeaustauscher Apparatebau GmbH

Zur Dessel 1
31028 Gronau/Leine

T +49 (0) 51 82 / 582-976
F +49 (0) 51 82 / 582-48

Contact via E-Mail

Martin Dierich

Graduate Engineer

Martin Dierich

Product Manager

FUNKE Wärmeaustauscher Apparatebau GmbH

Zur Dessel 1
31028 Gronau/Leine

T +49 (0) 51 82 / 582-629
F +49 (0) 51 82 / 582-48

Contact via E-Mail

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