Semi Weld vs Full Welded PHE Comparison Table
| Choose a SEMI-WELDED PHE if… | Choose a FULLY WELDED PHE if… | |
| Your Situation is… | You have one “difficult” fluid and one “serviceable” fluid. | Both of your fluids are “difficult” (corrosive, high P/T). |
| Your Top Priority is… | Safety against mixing + Ability to clean one side. | Maximum pressure/temperature resistance and total gasket elimination. |
| Your Fluids are… | Side A: Toxic, expensive, or corrosive (e.g., Ammonia, chemical). Side B: Prone to fouling (e.g., Cooling water). | Side A & B: Corrosive, high P/T, or where any leak is unacceptable. |