Short answer
A leak check, a proof test and a burst test are not performed for the same purpose. While one evaluates tightness or behavior under a defined load, the burst test is a destructive evaluation aimed at the strength limit of the sample; the results cannot be used in place of one another.
Technical explanation
The methods within the scope of hydrostatic testing are intended to measure the behavior of the product under defined conditions. Burst pressure is not used as working pressure. An assembly passing a proof test does not show that it is compatible with all chemicals or guarantee its entire fatigue life. Similarly, the burst result of a prototype does not mean that every assembly in series production has been individually checked.
Topic-specific checkpoints
| Item | Description |
|---|---|
| Leak evaluation | Tightness under specified conditions |
| Proof test | Acceptance evaluation at a defined load |
| Burst test | Destructive investigation of the strength limit |
| Impulse test | Behavior under cyclic loading; a separate method |
How to evaluate it in practice
In quotations and reports, state the purpose of the test clearly instead of writing only ‘pressure test’. Record the sample selection, product identification, acceptance criterion and delivery scope. Physically and digitally separate samples that have undergone destructive testing from usable stock. Use a data validation rule to prevent a burst result from being transferred into the working pressure field of the product card. Test safety and application details must be defined in the authorized laboratory procedure. Do not compare leak, proof or burst results until the test purpose, pressure, duration and sample identification have been defined.
Original editorial recommendation; not a clause of a standard.
Frequently asked questions
Can a hose with a high burst pressure result be used at a higher pressure?
A single test result does not change the manufacturer's working pressure limit; the product must be re-evaluated for the new use.
Source coverage
-
S013
ISO 1402:2021 ISO · accessed 2026-10-19 Official abstract: hydrostatic test methods for hoses and hose assemblies
-
S017
Parker Safety Guide, Publication 4400-B.1 Parker Hannifin · accessed 2026-10-20 PDF page 2; 2.2 Pressure