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Terms

  • Bonded Strength

This exclusive trapezoidal cross section allows the formed foil to bond with the flat interleaving when subjected to heat treating near 2000F for nearly 24 hours.  This results in a very durable assembly that is then coated.  Triangular crimping would limit the contact area and result in very weak bonding.  Trapezoids win!

  • Pre-coated Material

High volume manufacturers like to crimp and coat the material in a continuous process.  Some “manufacturers” buy rolls of coated material rather than coat their own.  The material is then wound or cut/stacked into an element.  This approach makes it impossible to bond the layers together so a variety of pins have to be inserted to provide strength. This ‘loose’ assembly is subject to exhaust stream pulsations (one pulse per cylinder or one per turbine blade) that can ablate the coatings.

  •  Convert Old Catalysts into Cash

Broken, contaminated, worn out catalysts may be worth some cash!  If you can accumulate a few hundred pounds (about 5-6 elements) call PCA, Inc. and we will arrange to pick up your old material, melt it down and write you a check!

  •  Coatings Make a Difference!

Catalysts are coated with two types of coatings: 1) A wash coat that adheres to the special stainless steel or ceramic foundation and 2) A precious metals coat.  The wash coats are available in many chemistries…to enhance some particular aspect. Unfortunately, there can be trade-offs. For instance an automotive grade is meant to enhance NOx and/or CO destruction at the expense of VOC performance.  Precious metals coats can contain platinum, rhodium, palladium and a number of other additives.  Not only do we purchase premium grade coatings and precious metals, we specially process them before we use them to enhance performance.  This is why ADCAT™ catalysts usually offer better performance, size for size, than other brands 

  •  Silencer Grade Confusion

The main point is that there is no industry standard for terms such as “industrial” “residential”, “critical”, “hospital” or “super-hospital” grade to allow comparisons between manufacturers.  The best way to compare is to obtain the attenuation curves for the units.  If a local permitting authority places requirements on a site, then a consultant can generate proper limits in dBA at particular distances from the equipment.  Contact PCA for your sound attenuation needs and we can discuss the necessary details.

  •  Mufflers Only

PCA offers two lines of mufflers, industrial grade and OEM grade for large stationary engines. Available in different performance levels and styles, these mufflers offer solid construction, come with prime coat high heat paint and provide value-based sound control.

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