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Pressure Relief Valve Bench Test Record Template

Record bench tests of pressure relief valves: as found and as left pop pressure against the set pressure with an automatic tolerance check, seat tightness and reseat pressure, and the next test date.

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This is the Example sheet from the download, so you can see exactly how the completed pressure relief valve bench test record looks.

Site / unitUtilities

Test bench / gaugeTB 02, gauge cal. 2026 08

Test mediumAir / nitrogen

Test interval (months)36

Relief valves tested (pressures in bar g)

Tag	Service	Size	Set pressure	As found pop	As found result	As left pop	As left result	Reseat	Seat tight?	Test date	Next due	Tested by	Remarks
PSV 1001	Air receiver	1" x 2"	10.00	10.18	PASS	10.05	PASS	9.30	Yes	20 Oct 2026	20 Oct 2029	Tech A
PSV 2102	Steam header	2" x 3"	16.00	16.90	FAIL	16.10	PASS	15.00	Yes	20 Oct 2026	20 Oct 2029	Tech A	As found high; spring adjusted
PSV 3103	Pump discharge	3/4" x 1"	4.00	4.08	PASS	4.05	PASS	3.70	Yes	21 Oct 2026	21 Oct 2029	Tech B

Valves tested:3 · As found failures:1 · As left failures:0

About the Pressure Relief Valve Bench Test Record

Relief valves are tested at intervals to prove they lift at their set pressure and reseat tightly. The as found result matters most: it shows whether the valve would have protected the equipment since the last test, and drives the test interval.

How to fill in this template

Enter the test bench, medium and test interval.
For each valve record the set pressure from the nameplate and the as found pop pressure before any adjustment.
Adjust if needed and record the as left pop and reseat pressure, and whether the seat is tight.
Results show PASS or FAIL against the tolerance; the next due date follows from the interval.
As found failures should be reported: they show the valve would not have protected the equipment as intended.

What the formulas do

Tolerance = ± 0.138 bar for set ≤ 4.83 bar g, otherwise ± 3 % of set.
Result = PASS if |pop − set| ≤ tolerance.
Next due = test date + interval.

Frequently Asked Questions

What is the set pressure tolerance of a relief valve?

Under ASME Section VIII, ± 2 psi up to 70 psi set pressure and ± 3 % above. Other codes may differ.

Why record the as found pop pressure?

It shows how the valve performed in service. A high as found result means the equipment was less protected than designed.

What is reseat pressure?

The pressure at which the valve closes again after lifting; it is lower than the set pressure by the blowdown.

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