ISO 4406

These are the ISO 4046 cleanliness codes for oil particle count.  These tests are usually done with a laser particle count to measure the size of the micron as well as the quantities of particles per 1 ml of oil.

Bomba Oilgear PVWJ

Cuadro de referencia rápida para intercambiar bombas Oilgear de la serie PVWJ con otras bombas que pueden ser más disponibles por medio de Technical Union. Referencia de bombas alternativas para Oilgear PVWJ.

Pall Filters

This is my review about the company of Pall Filters.  Some of the world's largest hydraulic filter manufacturer, at least from my point of view.  Enjoy.