Regasketing

The Heat Exchanger Ontario regasketing service is normally a 10 to 12 day program, depending on the required cleaning, plate size and number of plates. If required, a 2 or 5 day turnaround is possible against a rush surcharge.

The Regasketing service consists of the following 8 steps:
 
Plate Log
The first part of the regasketing service program is the initial log in. Every plate is identified, logged, and visually inspected, to determine if it merits reconditioning. In this process the objective is to identify deformation, obvious pin holes, cracks, corrosion or, even erosion. This type of inspection requires a highly trained and knowledgeable team.

Our team is highly skilled team ensures that your plates receive the very best treatment

Old Gasket Removal
One of the benefits of using the Heat Exchanger Ontario regasketing service is that trained service techs will determine if your gaskets are reusable or not. In some cases we have saved customers thousands of dollars by carefully inspecting gaskets to determine if portions or even all of the old gaskets can be re-used. If the gaskets need to be replaced, Heat Exchanger Ontario service engineers will select the best possible method for removal. This will differ from application to application of service in which the plates have operated and it will differ from plate type to plate type.

We regasket each plate by hand to make sure everything is aligned perfectly

Plate Cleaning
Depending on application of operation, type of fouling, and amount of fouling our engineers will determine the proper cleaning and treatment process needed for the particular model and material. This will vary from case to case as different cleaning techniques are implemented. A carefully selected cleaning solution will be used to assure the quickest possible refurbishment. Different temperatures, agitation, and concentrations will be utilized to assure maximum cleaning efficiency.
 
Dye Penetrant Test
Every plate that Heat Exchanger Ontario services is dye penetrant tested. This will eliminate any plates that may have pinholes, cracks or anything that would cause cross contamination. It is extremely important that every plate is dye tested as 90% of the plates tested have less than 10% failure rate This means that if the plates are random checked or tested at a 10% rate the bad plates will not be identified. Pin holes or cracks can be very costly if put back into operation. It could mean costly down-time and possibly loss of product if cross contamination would occur.

Gasket Groove Preparation
It is imperative that the gasket groove is prepped before applying new gaskets. Left over glue can cause gaskets not to adhere properly and can reduce the operation life dramatically. Heat Exchanger Ontario’s service techs are trained and have over 120 years of combined experience at regasketing plates. Rolled grooves is the #1 cause for external leakage after regasketing. If a rolled groove is not identified the plate pack will not seal properly and will again cause costly down-time. With the Heat Exchanger Ontario regasketing service program this type of deformation will be identified. In most cases Heat Exchanger Ontario will be able to repress the plates. This can save up to 60% of the costs of the new plate and extend the life of the plate for years.

A clean tested plate awaits gasket application

Gasket Application
Gasket application using superior-bonding adhesive is critical in the regasketing process. Selection of adhesive depends on the application and the operation conditions under which the plate heat exchanger will be in service. Media as well as temperatures and pressure are factors when adhesive is selected. If proper adhesive is not used the lifetime of the gaskets will be reduced dramatically. In fact, using improper adhesive can cause improper conformance between plate and gasket and result in rolled grooves, corrosion and can even cause plates to crack during assembly.

Final Quality Control

Before shipment every plate is carefully inspected for gasket straightness, solid bonding, excess adhesive, deformations and plate pack sequence. When drawings are supplied every plate will be returned in assembly order allowing for quick and easy installation.

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