2 min read

Hydraulic Valve Performance Test Stands and Clean Oil

By Jim Harlan on Tue, Nov. 29, 2016

The Application

A hydraulic valve manufacturer required pristine fluid (< 14/12/9) to test flow across an 80-micron orifice on their test stand. Gross amounts of contamination in the fluid would skew the test results, invalidating any data collected.

The system held 100 l (26.4 gal ) of ISO VG 32 fluid with a flow rate of 25 lpm (6.6 gpm ).Through observing the manufacturer’s sampling practices, discussing fluid handling best practices and interpreting their lab reports, three independent problems were identified:

Topics: ISO 4406 hydraulic valve samples hydraulic oil
5 min read

[Video] Your Lab Reports Are Probably Wrong -- Here's How To Save Them

By Scott Howard on Tue, Aug. 16, 2016

When looking at a lab report, it is assumed the information on the report is accurate. A certified lab will not usually make an error in the report, but if so, it is obvious and easily fixed. Ever hear the saying "By the time the lab gets the report the error has already been made"? For the most part, this is true. Where people are led off course is believing the particle count on the lab report is the gospel. This is natural, but unfortunately not always the case with a bottle sample unless you already employ the techniques listed in the video below.
Topics: contamination ISO 16889 ISO 4406 samples video lab
4 min read

Is Choosing a Sample Port Location Driving You Mad?

By Jim Harlan on Mon, Jul. 07, 2014

The ideal sample port location depends on the purpose for drawing the sample. There are several reasons to draw samples from your hydraulic or lube systems. The main reason is to ensure that the fluid traveling through your system is not loaded with contamination that will damage your pumps, valves and other components.

Secondary reasons include identifying components that are beginning to wear before they fail (this allows you to be proactive about the component replacement or repair) and verifying filter element performance. Continue reading to learn where to take a sample from for each of these reasons. We’ve also included some general fluid sampling tips at the end of this blog.

Topics: hydraulic fluid fluid cleanliness samples reservoir gearbox contaminination
4 min read

[Video] Proper Bottle Sampling Technique

By Scott Howard on Wed, Feb. 05, 2014

Topics: samples reservoir filter cart video

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