ISO 5782-2:1997 pdf download – Pneumatic fluid power – Compressed air filters
1 Scope
This part of ISO 5782 specifies tests, procedures and a method of presenting the results concerning the parameters which define the main characteristics to be included in the supplier’s literature of filters conforming to ISO 5782-i.
The scope of this part of ISO 5782 is
– to facilitate the comparison of filters by standardizing test methods and presentation of test data;
– to assist in the proper application of filters in compressed air systems.
The tests specified are intended to allow comparison between the different type of filters; they are not production tests to be carried out on each filter manufactured.
2 Normative references
The following standards contain provisions which, through reference in this text, constitute provisions of this part of ISO 5782. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this part of ISO 5782 are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below.
Members of IEC and ISO maintain registers of currently valid International Standards.
ISO 3:1973, Preferred numbers – Series of preferred numbers.
ISO 2944:1974, Fluid power systems and components – Nominal pressures.
ISO 3448:1992, Industrial liquid lubricants – IS0 viscosity classification.
ISO 5598:1985, Fluid power systems and components – Vocabulary.
ISO 5782-i :1997, Pneumatic fluid power – Compressed air filters – Part 7: Main characteristics to be included in supplier’s literature and product-marking requirements.
ISO 6358:1989, Pneumatic fluid power – Components using compressible fluids – Determination of flow-rate characteristics.
3 Definitions
For the purposes of this part of IS0 5782, the definitions given in IS0 5598 and IS0 5782-l apply.
4 Units
Units from IS0 1000 are generally used in pneumatic fluid power systems, in particular:
– gauge pressure, expressed in kilopascals (bars);
– temperature, expressed in degrees Celsius;
– flow rate, expressed in cubic decimetres per second (ANR).
5 Test conditions
6 Test procedure to verify rated pressure
6.1 Perform this test on three random samples with a proposed rated pressure for the product.
6.2 In this test, the product-sealing means can be modified to prevent leakage and allow structural failure to occur; but modifications must not increase the structural strength of the pressure-containing envelope.
6.3 Fill samples with a liquid of viscosity that does not exceed ISO VG 32, according to ISO 3448, and install them in the temperature environment described in 5.1.
6.4 After stabilizing the temperature, pressurize slowly to a level of 1,5 times the proposed rated pressure. Hold at this level for 2 min and observe for leakage or failure (as defined in 6.6).
6.5 If there is no leakage or failure, increase the pressure by approximately half of its proposed, rating.Hold at this pressure for 2 min and observe for leakage or failure (as defined in 6.6).