A pass on a bench ticket is not a justification. When an auditor asks why this PSV goes three years between tests and that one goes twelve months, the answer is the run of in-tolerance as-found readings behind it — and that run is usually scattered across a filing cabinet, a shop cert and someone’s memory. This keeps the register, judges every reading, and holds the evidence per valve.
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The set-pressure tolerance changes at 70 psig. Below it a valve gets a flat two psi either way; above it the band opens to three percent of set, which is a different number for every valve on the site. Worked out in your head at the bench, that is where a marginal reading quietly gets written up as a pass.
A 60 psig valve is in tolerance from 58 to 62 psig. Anything outside that is a failed as-found reading, whatever the as-left says afterwards.
A 250 psig valve gets 242.5 to 257.5. A 1,440 psig valve gets 1,396.8 to 1,483.2. The app computes the band from the stamped set pressure and shows it before you save.
A valve that will not lift is recorded as a failed as-found test regardless of what happens after it is freed. It breaks the streak and demands a corrective action.
Type the as-found and the verdict appears immediately: deviation in psi, deviation as a percentage, and the exact band it was measured against. No mental arithmetic at the bench, no marginal reading talked into a pass.
Interval is a per-valve figure, not a site-wide setting. Change one valve to twelve months and its next-due date moves; the register can be filtered to overdue and due-within-30-days without anyone rebuilding a sheet.
Every valve carries its consecutive in-tolerance count and the date of its last failure. That is the specific thing an auditor wants when the interval is longer than the default, and it is on the screen rather than reconstructed from paperwork.
An out-of-tolerance as-found, a seat leak or a no-lift will not save without a corrective action written against it. The gap that normally opens between finding a problem and recording what was done about it is closed at entry.
A valve shop with a metal roof and a wellsite forty miles out have the same problem. Everything runs on the device, offline, once the page has been opened.
Add to home screen on a phone or tablet and it opens full screen, no browser bar, no account, no login to remember at six in the morning.
High contrast for a screen in direct sunlight, with a dark theme a tap away for a night shift. It remembers which you picked.
No account, no server, no sync. The register lives in your browser storage, backs up to a JSON file, and exports to CSV whenever you want it elsewhere.
Every valve carries one status, worked out from its own interval and its own last reading.
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