---
title: Donaldson Hy-Pro Lube & Hydraulic Filtration Industry Blog | vacuum dehydration
description: vacuum dehydration | Learn about hydraulic fluid, lube oil, diesel fuel and industrial fluid contamination, filtration and conditioning on the Donaldson Hy-Pro blog.
---

[![Donaldson Hy-Pro Logo_White](https://www.hyprofiltration.com/hs-fs/hubfs/Hy-Pro%20Logos/Donaldson%20Hy-Pro%20Logo_White.png?width=591&height=265&name=Donaldson%20Hy-Pro%20Logo_White.png)

![Donaldson Hy-Pro Logo 2](https://www.hyprofiltration.com/hs-fs/hubfs/Hy-Pro%20Logos/Donaldson%20Hy-Pro%20Logo%202.png?width=584&height=262&name=Donaldson%20Hy-Pro%20Logo%202.png) 

](https://www.hyprofiltration.com)

[**](https://www.hyprofiltration.com/blog/topic/vacuum-dehydration#tmpmodule_1568675152246189)

[![Distributors](https://no-cache.hubspot.com/cta/default/170326/6a993b6f-f737-4a22-8a35-a45c4da5c3b4.png)](https://cta-redirect.hubspot.com/cta/redirect/170326/6a993b6f-f737-4a22-8a35-a45c4da5c3b4)

![ECATALOG](https://no-cache.hubspot.com/cta/default/170326/interactive-162302555948.png)

**

###### 1 min read

### [Hy-Pro Vac-U-Dry Vacuum Dehydrator (VUD) Explainer Video](https://www.hyprofiltration.com/blog/vud)

 By [Hy-Pro Marketing](https://www.hyprofiltration.com/blog/author/hy-pro-marketing) on Tue, Jul. 26, 2022

[![](https://www.hyprofiltration.com/hubfs/vud.png) ](https://www.hyprofiltration.com/blog/vud)

## Contamination is Complicated; Removing it is Easy

### Check out our latest product explainer video on Hy-Pro's VUD

### The optimized balance between heat, vacuum, process design, and an easy, user-friendly operating system for removal of water and particulate from hydraulic and high viscosity lubricating oils. Equipped with generously sized, high-efficiency filtration, the VUD is the ultimate oil purifier. Keeping fluids clean and dry extends component and bearing life, increases productivity, minimizes downtime, and extends useful fluid life. The VUD is ideal for removing all forms of water, including free, emulsified, and dissolved water and gas from hydraulic and lubricating oils.

 

###### Topics: [contamination](https://www.hyprofiltration.com/blog/topic/contamination) [fluid cleanliness](https://www.hyprofiltration.com/blog/topic/fluid-cleanliness) [vacuum dehydration](https://www.hyprofiltration.com/blog/topic/vacuum-dehydration) [vacuum dehydrator](https://www.hyprofiltration.com/blog/topic/vacuum-dehydrator) [fluid contamination](https://www.hyprofiltration.com/blog/topic/fluid-contamination) [VUD](https://www.hyprofiltration.com/blog/topic/vud) [cutdirtcutcosts](https://www.hyprofiltration.com/blog/topic/cutdirtcutcosts) [hypro](https://www.hyprofiltration.com/blog/topic/hypro)

###### 3 min read

### [Getting to Know Demulsibility](https://www.hyprofiltration.com/blog/getting-to-know-demulsibility)

 By [Hy-Pro Marketing](https://www.hyprofiltration.com/blog/author/hy-pro-marketing) on Thu, Mar. 25, 2021

# Demulsibility

## What is Demulsibility?

Demulsibility is the ability of oil to separate from water. Oil and water naturally separate because like molecules attract each other. Oil sticks with oil, water sticks with water. Oil is "hydrophobic", or "afraid of water," which is a benefit when it comes to fluids like turbine oil. 

###### Topics: [varnish in hydraulic oil](https://www.hyprofiltration.com/blog/topic/varnish-in-hydraulic-oil) [varnish in turbine oil](https://www.hyprofiltration.com/blog/topic/varnish-in-turbine-oil) [contamination](https://www.hyprofiltration.com/blog/topic/contamination) [water in oil](https://www.hyprofiltration.com/blog/topic/water-in-oil) [dirt](https://www.hyprofiltration.com/blog/topic/dirt) [Phosphate Ester](https://www.hyprofiltration.com/blog/topic/phosphate-ester) [diesel engine](https://www.hyprofiltration.com/blog/topic/diesel-engine) [maintenance](https://www.hyprofiltration.com/blog/topic/maintenance) [steel mills](https://www.hyprofiltration.com/blog/topic/steel-mills) [vacuum dehydration](https://www.hyprofiltration.com/blog/topic/vacuum-dehydration) [rolling mill lubricating oil](https://www.hyprofiltration.com/blog/topic/rolling-mill-lubricating-oil) [filter housing sizing](https://www.hyprofiltration.com/blog/topic/filter-housing-sizing) [micro-dieseling](https://www.hyprofiltration.com/blog/topic/micro-dieseling) [thermal event](https://www.hyprofiltration.com/blog/topic/thermal-event) [ISO 4406](https://www.hyprofiltration.com/blog/topic/iso-4406) [vacuum dehydrator](https://www.hyprofiltration.com/blog/topic/vacuum-dehydrator) [fluid samples](https://www.hyprofiltration.com/blog/topic/fluid-samples) [oil analysis](https://www.hyprofiltration.com/blog/topic/oil-analysis) [metal analysis](https://www.hyprofiltration.com/blog/topic/metal-analysis) [paper mill](https://www.hyprofiltration.com/blog/topic/paper-mill) [hydraulic pump](https://www.hyprofiltration.com/blog/topic/hydraulic-pump) [samples](https://www.hyprofiltration.com/blog/topic/samples) [COD](https://www.hyprofiltration.com/blog/topic/cod) [duplex low-pressure](https://www.hyprofiltration.com/blog/topic/duplex-low-pressure) [gearbox](https://www.hyprofiltration.com/blog/topic/gearbox) [contaminination](https://www.hyprofiltration.com/blog/topic/contaminination) [hydraulic](https://www.hyprofiltration.com/blog/topic/hydraulic) [duplex high-pressure](https://www.hyprofiltration.com/blog/topic/duplex-high-pressure) [cellulose media](https://www.hyprofiltration.com/blog/topic/cellulose-media) [filter elements](https://www.hyprofiltration.com/blog/topic/filter-elements) [filter comparison](https://www.hyprofiltration.com/blog/topic/filter-comparison) [aluminum refinery](https://www.hyprofiltration.com/blog/topic/aluminum-refinery) [lab](https://www.hyprofiltration.com/blog/topic/lab)

###### 5 min read

### [Dynamic Filter Efficiency](https://www.hyprofiltration.com/blog/dynamic-filter-efficiency)

 By [Hy-Pro Marketing](https://www.hyprofiltration.com/blog/author/hy-pro-marketing) on Thu, Mar. 18, 2021

# Dynamic Filter Efficiency

## What is Dynamic Filter Efficiency?

### Dynamic Filter Efficiency matches filter testing with real-life conditions. 

All hydraulic and lube systems have a critical contamination tolerance level that is often defined by, but not limited to, the most sensitive system component such as servo valves or high speed journal bearings. Defining the ISO fluid cleanliness code upper limit is a function of component sensitivity, safety, system criticality and ultimately getting the most our of hydraulic and lube assets. 

###### Topics: [varnish in hydraulic oil](https://www.hyprofiltration.com/blog/topic/varnish-in-hydraulic-oil) [vacuum dehydration](https://www.hyprofiltration.com/blog/topic/vacuum-dehydration) [mining](https://www.hyprofiltration.com/blog/topic/mining) [fluid samples](https://www.hyprofiltration.com/blog/topic/fluid-samples) [total systems cleanliness](https://www.hyprofiltration.com/blog/topic/total-systems-cleanliness) [metal analysis](https://www.hyprofiltration.com/blog/topic/metal-analysis) [coalesce technology](https://www.hyprofiltration.com/blog/topic/coalesce-technology) [cleanliness](https://www.hyprofiltration.com/blog/topic/cleanliness) [COD](https://www.hyprofiltration.com/blog/topic/cod) [lube oil](https://www.hyprofiltration.com/blog/topic/lube-oil) [turbine oil](https://www.hyprofiltration.com/blog/topic/turbine-oil) [glass media](https://www.hyprofiltration.com/blog/topic/glass-media) [demulsibility](https://www.hyprofiltration.com/blog/topic/demulsibility) [servo valves](https://www.hyprofiltration.com/blog/topic/servo-valves)

###### 4 min read

### [Fluid Life Extension](https://www.hyprofiltration.com/blog/fluid-life-extension)

 By [Hy-Pro Marketing](https://www.hyprofiltration.com/blog/author/hy-pro-marketing) on Thu, Mar. 11, 2021

# Extending Fluid Life Saves Money and Helps the Environment

Our mission is to make our customers as efficient as possible, and we achieve that with the highest quality filtration products and total system cleanliness strategies to maximize uptime, productivity and prevent costly fluid contamination related failures. Been there. Done that. Going to do it again tomorrow. But that's not the only way we make our customers efficient. Extending the useful life of in-service fluids pays big dividends in reliability, saves money on premature fluid replacement costs, and reduces the environmental impact of industry by reducing the amount of fluids used and discarded. Enhancing reliability, saving money, and protecting the environment are not only good business, they're our responsibility. To help reduce oil usage, let's first understand why fluids are condemned and prematurely replaced. 

###### Topics: [varnish in hydraulic oil](https://www.hyprofiltration.com/blog/topic/varnish-in-hydraulic-oil) [hydraulic fluid](https://www.hyprofiltration.com/blog/topic/hydraulic-fluid) [dirt](https://www.hyprofiltration.com/blog/topic/dirt) [vacuum dehydration](https://www.hyprofiltration.com/blog/topic/vacuum-dehydration) [filter housing sizing](https://www.hyprofiltration.com/blog/topic/filter-housing-sizing) [oil darkening](https://www.hyprofiltration.com/blog/topic/oil-darkening) [mining](https://www.hyprofiltration.com/blog/topic/mining) [fluid samples](https://www.hyprofiltration.com/blog/topic/fluid-samples) [oil analysis](https://www.hyprofiltration.com/blog/topic/oil-analysis) [filter performance](https://www.hyprofiltration.com/blog/topic/filter-performance) [paper mill](https://www.hyprofiltration.com/blog/topic/paper-mill) [fluid transfer](https://www.hyprofiltration.com/blog/topic/fluid-transfer) [filters](https://www.hyprofiltration.com/blog/topic/filters) [filter cart](https://www.hyprofiltration.com/blog/topic/filter-cart) [gearbox](https://www.hyprofiltration.com/blog/topic/gearbox) [LCS](https://www.hyprofiltration.com/blog/topic/lcs) [duplex high-pressure](https://www.hyprofiltration.com/blog/topic/duplex-high-pressure) [indianapolis](https://www.hyprofiltration.com/blog/topic/indianapolis) [filter elements](https://www.hyprofiltration.com/blog/topic/filter-elements) [lube oil](https://www.hyprofiltration.com/blog/topic/lube-oil) [turbine oil](https://www.hyprofiltration.com/blog/topic/turbine-oil) [desiccant](https://www.hyprofiltration.com/blog/topic/desiccant) [demulsibility](https://www.hyprofiltration.com/blog/topic/demulsibility)

###### 1 min read

### [Bearing and Component Life Extension](https://www.hyprofiltration.com/blog/bearing-component-life-extension)

 By [Hy-Pro Marketing](https://www.hyprofiltration.com/blog/author/hy-pro-marketing) on Thu, Mar. 04, 2021

# Extending Bearing and Component Life and Saving Money 

Improving fluid cleanliness means reduced downtime, more reliable equipment, longer fluid life, and fewer maintenance hours. In addition, it also means reduced component replacement and repair expenses. 

###### Topics: [EHC](https://www.hyprofiltration.com/blog/topic/ehc) [hydraulic filters](https://www.hyprofiltration.com/blog/topic/hydraulic-filters) [Gearbox filtration](https://www.hyprofiltration.com/blog/topic/gearbox-filtration) [vacuum dehydration](https://www.hyprofiltration.com/blog/topic/vacuum-dehydration) [filter housing sizing](https://www.hyprofiltration.com/blog/topic/filter-housing-sizing) [oil darkening](https://www.hyprofiltration.com/blog/topic/oil-darkening) [mining](https://www.hyprofiltration.com/blog/topic/mining) [fluid samples](https://www.hyprofiltration.com/blog/topic/fluid-samples) [filtration](https://www.hyprofiltration.com/blog/topic/filtration) [Fluid Analysis](https://www.hyprofiltration.com/blog/topic/fluid-analysis) [total systems cleanliness](https://www.hyprofiltration.com/blog/topic/total-systems-cleanliness) [metal analysis](https://www.hyprofiltration.com/blog/topic/metal-analysis) [fluid transfer](https://www.hyprofiltration.com/blog/topic/fluid-transfer) [fluid analysis guide](https://www.hyprofiltration.com/blog/topic/fluid-analysis-guide) [coalesce technology](https://www.hyprofiltration.com/blog/topic/coalesce-technology) [filter cart](https://www.hyprofiltration.com/blog/topic/filter-cart) [gearbox](https://www.hyprofiltration.com/blog/topic/gearbox) [indianapolis](https://www.hyprofiltration.com/blog/topic/indianapolis) [lube oil](https://www.hyprofiltration.com/blog/topic/lube-oil) [turbine oil](https://www.hyprofiltration.com/blog/topic/turbine-oil) [demulsibility](https://www.hyprofiltration.com/blog/topic/demulsibility)

###### 3 min read

### [Understanding ISO Codes](https://www.hyprofiltration.com/blog/understanding-iso-codes)

 By [Hy-Pro Marketing](https://www.hyprofiltration.com/blog/author/hy-pro-marketing) on Thu, Feb. 25, 2021

# ISO Cleanliness Codes Explained

The ISO Cleanliness Code (per ISO4406-1999) is used to quantify particulate contamination levels per milliliter of fluid at 3 sizes - 4µ, 6µ, and 14µ. It is expressed in 3 numbers (example 19/17/14) where each number represents a contaminant level code for the correlating particle size. The code includes all particles of the specified size and larger. For a detailed breakdown and a handy ISO code cheat sheet, see our [ISO Code Guide & Cheat Sheet](https://www.hyprofiltration.com/blog/iso-4406-cleanliness-codes)![Example of an ISO cleanliness code showing particle counts in hydraulic fluid at 4, 6, and 14 micron sizes.](https://www.hyprofiltration.com/hs-fs/hubfs/Screen%20Shot%202021-02-23%20at%202.50.37%20PM.png?width=283&name=Screen%20Shot%202021-02-23%20at%202.50.37%20PM.png)It is important to note that each time a code increases, the quantity range of particles is doubling. Inversely, as a code decreases by one the contaminant level is cut in half. 

###### Topics: [hydraulic fluid](https://www.hyprofiltration.com/blog/topic/hydraulic-fluid) [dirt](https://www.hyprofiltration.com/blog/topic/dirt) [hydraulic filters](https://www.hyprofiltration.com/blog/topic/hydraulic-filters) [Gearbox filtration](https://www.hyprofiltration.com/blog/topic/gearbox-filtration) [vacuum dehydration](https://www.hyprofiltration.com/blog/topic/vacuum-dehydration) [filter housing sizing](https://www.hyprofiltration.com/blog/topic/filter-housing-sizing) [plastic injection molding manufacturer](https://www.hyprofiltration.com/blog/topic/plastic-injection-molding-manufacturer) [oil darkening](https://www.hyprofiltration.com/blog/topic/oil-darkening) [mining](https://www.hyprofiltration.com/blog/topic/mining) [fluid samples](https://www.hyprofiltration.com/blog/topic/fluid-samples) [total systems cleanliness](https://www.hyprofiltration.com/blog/topic/total-systems-cleanliness) [metal analysis](https://www.hyprofiltration.com/blog/topic/metal-analysis) [filter performance](https://www.hyprofiltration.com/blog/topic/filter-performance) [paper mill](https://www.hyprofiltration.com/blog/topic/paper-mill) [fluid transfer](https://www.hyprofiltration.com/blog/topic/fluid-transfer) [filters](https://www.hyprofiltration.com/blog/topic/filters) [hydraulic valve](https://www.hyprofiltration.com/blog/topic/hydraulic-valve) [coalesce technology](https://www.hyprofiltration.com/blog/topic/coalesce-technology) [filter cart](https://www.hyprofiltration.com/blog/topic/filter-cart) [cleanliness](https://www.hyprofiltration.com/blog/topic/cleanliness) [COD](https://www.hyprofiltration.com/blog/topic/cod) [hydraulic oil](https://www.hyprofiltration.com/blog/topic/hydraulic-oil) [gearbox](https://www.hyprofiltration.com/blog/topic/gearbox) [duplex high-pressure](https://www.hyprofiltration.com/blog/topic/duplex-high-pressure) [compressor](https://www.hyprofiltration.com/blog/topic/compressor) [filter elements](https://www.hyprofiltration.com/blog/topic/filter-elements) [lube oil](https://www.hyprofiltration.com/blog/topic/lube-oil) [turbine oil](https://www.hyprofiltration.com/blog/topic/turbine-oil) [desiccant](https://www.hyprofiltration.com/blog/topic/desiccant) [demulsibility](https://www.hyprofiltration.com/blog/topic/demulsibility)

[All posts](https://www.hyprofiltration.com/blog/all)

### Featured

### Sign up for updates

## Have a Question for Donaldson Hy-Pro?

[![Contact Us](https://no-cache.hubspot.com/cta/default/170326/82b6a151-2481-4e91-9cac-0d88a5679d18.png)](https://cta-redirect.hubspot.com/cta/redirect/170326/82b6a151-2481-4e91-9cac-0d88a5679d18)

[**](https://www.linkedin.com/company/hy-pro-filtration) [**](https://www.youtube.com/c/hyprofiltration)

[![Donaldson Hy-Pro Logo](https://www.hyprofiltration.com/hs-fs/hubfs/Hy-Pro%20Logos/Donaldson%20Hy-Pro%20Logo%202.png?width=130&height=58&name=Donaldson%20Hy-Pro%20Logo%202.png "Donaldson Hy-Pro Logo")](https://www.hyprofiltration.com)

Donaldson Hy-Pro 6810 Layton Road Anderson IN, 46011 | +1 (317) 849-3535 | info@hyprofiltration.com | All Rights Reserved 2026

**