Technical insights
Selection guides, comparisons and troubleshooting notes for process control equipment — written for engineers specifying, installing and maintaining valves, positioners and transmitters, not for search engines.
Every specification quoted in these articles is traceable to a manufacturer datasheet or product manual, cited on the article itself. Where two documents disagree, we say so rather than pick the convenient number.
Selection Guides
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How to select a valve positioner: linear vs rotary, smart vs electro-pneumatic
A decision guide to specifying a valve positioner: actuator motion, single or double acting, feedback options, area classification and when smart pays.
7 min read 4 products -
Specifying a dust collector pulse valve: the ASCO Series 353
Sizing and specifying ASCO Series 353 pulse valves for pulse-jet baghouses: orifice and Kv by size, diaphragm choice, pilot options and spare kits.
7 min read 1 product
Comparisons
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I/P converters explained: selecting between the YT-930 and YT-940
What an I/P converter does, how the Rotork YTC YT-930 and YT-940 differ on protection concept and supply banding, and why converters fail in service.
7 min read 4 products -
YT-3300 vs YT-3301 vs YT-3303 vs YT-3350: choosing a Rotork YTC smart positioner
Four Rotork YTC smart positioners on one electronics platform. Housing, mounting side, remote sensor, orifice, switches and certificates compared.
7 min read 5 products
Troubleshooting
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Air preparation for valve positioners: why the filter regulator matters
Instrument-air quality decides whether a positioner holds position. What the YTC manuals require, the fault codes bad air produces, and YT-200 sizing.
7 min read 5 products
Standards & Certification
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Reading a Rosemount 3051 model code: ranges, output, SIL and manifolds
Decode a Rosemount 3051 model string field by field: measurement type, range codes, HART vs Fieldbus, housing, SIL 2/3 to IEC 61508 and manifolds.
7 min read 1 product
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