When purchasing personnel inquire about plate-and-frame heat exchangers, they are often stuck on one question: within the same BR series, why do different manufacturers offer very different gasket temperature ratings and plate materials, and why do later maintenance costs also differ significantly? The answer to this question is often not on the quotation sheet, but in whether the medium and operating conditions are checked thoroughly during the selection stage.
Plate material needs to match the corrosiveness of the medium. In common configurations, 304 stainless steel is suitable for general clean water and low-corrosiveness media, 316L performs more stably in environments containing chloride ions or weak corrosiveness, and titanium plates are used for seawater or strongly corrosive media. During procurement, suppliers should be required to provide the medium name and concentration, and technical personnel should calculate and determine the material to avoid early perforation of plates caused by using a material that is too low-grade. The BR-160 plate-and-frame heat exchanger can provide a variety of plate material options, making it easy to configure according to the actual medium.
The gasket is one of the key maintenance points of a plate-and-frame heat exchanger. If the temperature rating is selected too low, problems may not be visible in the short term, but under continuous high-temperature operating conditions it will accelerate aging, cause leakage, and may even require shutdown for replacement. During procurement, the maximum working temperature should be clearly written into the technical requirements, with a reasonable margin reserved. The BR-160 plate-and-frame heat exchanger offers a variety of gasket options that can be configured according to the medium temperature, reducing unplanned downtime caused by improper gasket selection.
Failure to adjust the pass arrangement according to the actual pressure drop is a common on-site problem. As the number of passes increases, the heat exchange area is used more fully, but the pressure drop also rises; as the number of passes decreases, the pressure drop falls, but the heat exchange effect may be insufficient. Before selection, please provide the medium name, inlet and outlet temperatures, flow rate, and allowable pressure drop so that the number of plates and pass arrangement can be calculated. The plate spacing and pass arrangement of the BR-160 plate-and-frame heat exchanger are adjustable, making it easy to achieve a balance between heat exchange capacity and pressure drop.
During shutdown maintenance, check whether the gaskets are hardened, cracked, or displaced, and whether the plate sealing surfaces are scratched or have deposits. When cleaning, avoid using chemicals corrosive to the plate material, and tighten the clamping bolts evenly in a diagonal sequence to prevent uneven stress on the plates. For spare parts procurement, it is recommended to stock gaskets according to actual operating conditions and record the replacement cycle to facilitate subsequent maintenance arrangements.
