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Plate & Gaskets | Data Sheets

Alfa Laval TL6.

Alfa Laval TL6

DATA SHEET

Alfa Laval TL6

Plate heat exchanger

General heating and cooling duties.

Typical capacities

Liquid flow rate
Up to 20 kg/s (317 gpm), depending on media, permitted pressure drop and temperature program.

Plate types
TL6B

Frame types
FM, FG and FD

Standard Materials

Frame plate
Mild steel, Epoxy painted

Nozzles
Carbon steel
Metal lined: Stainless steel, Titanium
Rubber lined: Nitrile, EPDM
Pipe: Stainless steel

Plates
Stainless steel Alloy 316 / Alloy 304 Titanium, Alloy 254 SMO, Alloy C-276

Gaskets
Nitrile, EPDM, HeatSeal™, HNBR, Viton®G

Technical Data

Pressure vessel codes PED, ASME, pvcALS™
Mechanical design pressure (g) / temperature
FM  pvcALS™      1.0 MPa / 180ºC
FM  PED                1.0 MPa / 180ºC 
FG  pvcALS™      1.6 MPa / 180ºC
FG  PED                1.6 MPa / 180ºC
FG  ASME             150 psig / 320ºF
FD  pvcALS™       2.5 MPa / 180ºC
FD  PED                2.5 MPa / 180ºC
FD  ASME             300 psig / 320ºF

Connections

Pipe connections (not for frame type FD)
Straight threaded     Size 50 mm   ISO G2”, NPT 2”
Threaded inlet port  Size 50 mm   ISO G2”
Straight threaded     Size 65 mm   ISO G2 ½”, NPT 2 ½”

Flange Connections
FM   pvcALS™   Size 50 / 65 mm    DIN/GB/GOST PN16, ASME Cl.150
FM   PED             Size 50 / 65 mm    DIN PN16, ASME Cl. 150
FG   pvcALS™   Size 50 / 65 mm     DIN/GB/GOST PN16, ASME Cl. 150
FG   PED             Size 50 / 65 mm     DIN PN16, ASME Cl. 150
FG   ASME          Size 50 - 65 ASME   Cl.150
FD   pvcALS™   Size 50 / 65 mm     DIN/GB/GOST PN40, ASME Cl.300
FD   PED             Size 50 / 65 mm     DIN PN40, ASME Cl. 300
FD   ASME          Size 50 / 65 mm     ASME Cl. 300

Maximum heat transfer surface
102.0 m2 (1097 sq.ft)

Measurements mm (inch)
Type                       H                       W                    h
TL6-FM / PED / pvcALS™      1264 (49.8")     320 (12.6")    137 (5.4")
TL6-FG / PED / pvcALS™      1264 (49.8")     320 (12.6")    137 (5.4")
TL6-FG / ASME                       1299 (51.1")        320 (12.6")    142 (5.6")
TL6-FD / PED / pvcALS™       1264 (49.8")     330 (13.0")    137 (5.4")
TL6-FD / ASME                       1308 (51.5")       330 (13.0")    142 (5.6")

The number of tightening bolts may vary
depending on pressure rating.

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WHEN SHOULD A PLATE & FRAME HEAT EXCHANGER BE SERVICED?

As a heat exchanger becomes fouled with dirt, debris or scale, often the modulating valve provides additional hot or cold liquid to help compensate for the loss of efficiency of the heat exchanger.

Over time the control valve will continue to open fully. Unfortunately, on the hottest or coldest days, even with the valve fully open the heat exchanger cannot meet the thermal transfer requirements and the situation becomes critical.

Monitoring just the operating temperature provides a false sense of security. Recording the difference in the outlet and inlet pressures provides a more accurate result of the amount of fouling.

Fouling equal to the thickness of a piece of paper represents a 20% loss of thermal efficiency. In addition, the energy cost for pumps increases since the pump must work harder to overcome the increased pressure resistance through the PHE

How Effective Is Using High Pressure Water to Clean Plate & Frame Heat Exchangers?

Plate and frame heat exchangers (PHEs) are vital for efficient heat transfer in industries like HVAC, food processing, and power generation. Fouling from scale, rust, or organic matter can reduce performance, increase energy costs, and risk system failures.

A common question is: How effective is using high pressure water to clean plate & frame heat exchangers?

High-pressure water jetting is highly effective for removing stubborn deposits, but its success depends on proper execution

What Is High-Pressure Water Cleaning for PHEs?

High-pressure water jetting uses a concentrated water stream, often at pressures up to 2,500 bar (36,000 psi), to dislodge tough fouling like scale, marine growth, or debris from PHE plates. This method, is particularly effective for severe fouling that Clean-in-Place (CIP) or chemical flushing cannot fully address. It often requires disassembling the PHE for precise cleaning.

Effectiveness of High-Pressure Water Cleaning

High-pressure water cleaning is effective for PHEs because it:

  • Removes Stubborn Deposits: It clears hardened scale, calcium carbonate, and biological fouling, restoring heat transfer efficiency methods.
  • Targets Complex Geometries: The high-pressure stream reaches tight spaces and corrugated plate designs, ensuring thorough cleaning.
  • Reduces Chemical Use: It minimizes reliance on harsh chemicals, making it eco-friendly when wastewater is managed properly.

How High-Pressure Water Cleaning Works

  • Disassembly: PHEs are dismantled to access plates, as high-pressure cleaning typically requires manual application, per industry standards.
  • Jetting: Technicians use high-pressure water jets, as practiced by Heat Exchanger Ontario, to remove debris without damaging plates.
  • Rinsing and Inspection: Plates are rinsed and checked for damage (e.g., cracks or pinholes) using dye penetrant testing
  • Reassembly: Plates and gaskets are reinstalled, ensuring proper sealing, as emphasized.

Limitations of High-Pressure Water Cleaning

  • Risk of Damage: Excessive pressure can harm delicate plates or gaskets, especially in stainless steel or titanium PHEs
  • Time and Labor: Disassembly and cleaning can take 2–3 days, as noted in traditional methods, compared to faster CIP systems.
  • Wastewater Management: High-pressure cleaning generates significant wastewater, requiring proper treatment to meet environmental regulations

Best Practices for High-Pressure Water Cleaning

  • Combine with Chemical Cleaning: Pair high-pressure jetting with chemical flushing for severe fouling
  • Use Professional Services: Experts like T.H. Industrial Solutions ensure proper pressure settings to protect components.
  • Monitor Fouling: Schedule cleaning when differential pressure reaches 7–10 psi, indicating fouling
  • Environmental Compliance: Manage wastewater to comply with regulations

When to Use High-Pressure Water Cleaning

High-pressure water cleaning is ideal for PHEs with severe fouling, such as marine growth or hardened scale, where CIP or chemical methods are insufficient. It’s commonly used in industries like power generation or marine applications. For routine maintenance, CIP or chemical flushing may be preferred to avoid disassembly,

Conclusion

High-pressure water cleaning is highly effective for cleaning plate and frame heat exchangers, particularly for tough deposits, but requires expertise to avoid damage and manage wastewater. Industry leaders like T.H. Industrial Solutions offer professional services to ensure safe, efficient cleaning.

T.H. Industrial Solutions Inc. (THS) has been servicing industrial plate and frame heat exchangers as with shell and tube heat exchangers.  Professionally solving process problems across Canada since 2009. THS head office is located in Pickering, Ontario with a 6,000 square foot service center in Hamilton, Ontario.

Today there are fewer qualified people in this industry that know the products and understand the applications. Utilizing hands on experience and knowledge that has been gained by our THS sales and service technicians for over the past 30 years, we will take the time to understand what you require and strive to provide a prompt, educated and accurate response at a competitive price.

Our Heat Exchanger Cleaning Services, along with heat exchanger gasket replacement systems, and knowledge of heat exchanger gasket materials make THS your Industrial Heat Exchanger Service Solution

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HEAD OFFICE

1550 Bayly Street, Unit 15
Pickering, ON L1W 3W1

T 905 831-4963

SERVICE CENTER

76 Harlowe Road, Unit 4 - 7
Hamilton, ON L8W 3R6

T 905 318-0777
F 905-318-8422

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