API RP 13C is the latest labeling procedure for shaker screens. Internationally, API RP 13C is ISO 13501.Now the API Screen Numbers are determined by the D100 separation (Microns).

Introduction of API RP 13C

The new procedure API RP 13C is a revision of the previous API RP 13E, which was based on optical measurements of the screen opening using a microscope and computer analysis. Under API RP 13E, screen designations were based on individual manufacturer test methods which produced inconsistent labeling. So it has many different criterion, and when we choose the shaker screen for the shakers, we are easy to get in trouble, even now with the API RP13C, we must convert the old one to the new label, then we can choose the right screen.

How They Test

The API RP 13C test contain two parts: cut point and conductance. It is a current criterion. Used all over the world.The tests describe a screen without predicting its performance.

The cut point test is based on a time-proven testing method used by ASTM to classify particles by size.

The D100 separation is used for assigning screen designations. D100 means that
100 percent of the particles larger than the test screen will be retained, and all finer particles will pass through.

How to Find the Right Replacement Shaker Screens

As we can find, MI-SWACO, derrick, Nov Brandt, they manufacturer replacement shaker screens for each other. Oh, by the way, GN Solids Control, manufacture all the replacement shaker screens.

In nov brandt, they manufacture screens for Derrick, and mi-swaco, and they give these screens a particular number series to label. As they call the shaker screens used in VSM100, VSM300, which are labeled by 62536 62735 series. Replacement screens for DERRICK is 64127 series; and replacement for Mongoose PT is 64523 series.

In Derrick, they label their shaker screens by dimension, maybe it is more useful for the OEM shaker screen manufacturer. EG. 46*23 means miswaco mongoose. 49*25 means brandt cobra. Want more? Contact GN.