Gasketed Plate Heat Exchangers (GPHEs) and Welded Plate Heat Exchangers (WPHEs)

Gasketed Plate Heat Exchangers (GPHEs) and Welded Plate Heat Exchangers (WPHEs)

Gasketed Plate Heat Exchangers (GPHEs) and Welded Plate Heat Exchangers (WPHEs) are types of plate heat exchangers widely used across various industries for their efficiency and versatility. Their primary function is to transfer heat between two fluids without allowing the fluids to mix.

Gasketed Plate Heat Exchangers (GPHEs): GPHEs consist of thin, corrugated metal plates with gaskets around the edges. The plates are arranged in a stacked configuration and held together by a frame. The gaskets seal the plates, preventing fluid leakage and directing the flow of the fluids between alternate plates. The corrugated pattern of the plates increases the surface area and enhances the turbulence, thereby improving heat transfer efficiency. GPHEs disassemble easily for cleaning, maintenance, or expansion.

Welded Plate Heat Exchangers (WPHEs): WPHEs are similar in design to GPHEs, but instead of using gaskets, the plates are welded together, eliminating the need for gaskets and the associated maintenance issues. WPHEs are typically more compact than GPHEs, as they can be built with thinner plates and smaller gaps between them.

There are many industrial and commercial applications for GPHEs and WPHEs however, the two have some performance differences, which can impact their suitability for various applications.


  1. Efficiency: GPHEs offer high thermal efficiency and are suitable for applications with moderate temperature and pressure requirements.
  2. Maintenance: GPHEs have gasket seals that require periodic maintenance and replacement, making them less suitable for applications with aggressive media or high temperatures.
  3. Flexibility: GPHEs can be easily expanded or reconfigured by adding or removing plates, allowing adaptability to change process conditions.
  4. Cost: Initial costs for GPHEs are typically lower, but maintenance and downtime costs can be higher due to the need for gasket replacement.


  1. Efficiency: WPHEs provide excellent thermal efficiency and are designed for high-pressure and high-temperature applications, making them suitable for harsh operating conditions.
  2. Maintenance: WPHEs have welded plate connections, which eliminate the need for gaskets, resulting in lower maintenance requirements and longer service life.
  3. Flexibility: WPHEs have a fixed plate configuration, meaning they cannot be easily expanded or reconfigured like GPHEs. However, their robust design allows higher operating limits and a more compact footprint.
  4. Cost: Initial costs for WPHEs are typically higher, but they offer lower maintenance and downtime costs due to their welded construction and elimination of gaskets.

For more information, contact:

Energy West, Inc.
1955 West Industrial Circle
Salt Lake City, Utah 84104
Phone: 801-262-4477
Fax: 801-261-0862