Even if you get some extra closing force and have a higher inlet pressure, you still might not be able to fully seal and you'll see creep. It's going to embed itself in that seat, causing a small leak path that is between the poppet and the seat. The space between the seat and the poppet is very small to create those pressure drops. You can imagine a whole system is built, and maybe there's a pesky little burr still sitting in there now as it zips down the line. We see that quite frequently on system startups. The one here on the right looks like a tubing burr. They represent debris that we sometimes see in regulator seats. In the slide above, we see two pictures of regulators that have been returned to us. Essentially, creep is a seat leak and it is typically caused by some sort of debris or damage on the seat. Creep is the rise in outlet pressure when there's no flow. This is the most common issue we see in the field. One regulator issue you may run into is creep. This article and accompanying video are an excerpt from the Swagelok® Regulator Selection & Optimization Webinar presented by Swagelok Field Engineer Supervisor Jon Kestner. My Sales and Service Center: Swagelok Pittsburgh / Tri-State Area.Installation And Bending Safety Essentials.About Swagelok Pittsburgh | Tri-State Area.Electronic Desktop Technical Reference (eDTR).Leak Detectors, Lubricants, and Sealants.
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