GB/T 39956.2-2021Pneumatic electro-pneumatic pressure control valve - Part 2: Test method for evaluating the main characteristics that should be included in commercial documents (English PDF)

1 Scope

This document specifies the test methods and parameter expressions for the main characteristics that should be included in the evaluation business documents.

The purpose of this document.

---By standardizing test methods and verifying the expression of test results, it is convenient for comparison and analysis;

---Contribute to the correct application of components in pneumatic systems.

The prescribed test aims to compare different types of pressure control valves, not a production test for every finished product.

Note 1.The test of non-electrically modulated pneumatic pressure control valve is specified in ISO 6953-2.

Note 2.The electrical-pneumatic flow control valve test is specified in ISO 10041-2.

Note 3.This document applies to components with a vent to the atmosphere.

2 Normative references

The contents of the following documents constitute the indispensable clauses of this document through normative references in the text. Among them, dated quotations

Only the version corresponding to that date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to

This document.

GB/T 39956.1-2021 Pneumatic electro-pneumatic pressure control valve Part 1.Main characteristics that should be included in business documents (ISO 10094-1.2010, IDT)

ISO 5598 Fluid power systems and components-Vocabulary (Fluidpowersystemsandcomponents-Vocabulary)

ISO 6358-1 Determination of flow characteristics of compressible fluid components used in pneumatics. Part 1.General rules and tests for steady-state flow

Test method (Pneumaticfluidpower-Determinationofflow-ratecharacteristicsofcomponentsusingcom- pressiblefluids-Part 1.Generalrulesandtestmethodsforsteady-stateflow)

ISO 6953-1 Pneumatic pressure reducing valve and filter pressure reducing valve Part 1.Main characteristics and product identification to be included in commercial documents

Requirements (Pneumaticfluidpower-Compressedairpressureregulatorsandfilter-regulators-Part 1.Main characteristicstobeincludedinliteraturefromsuppliersandproduct-markingrequirements)

3 Terms and definitions

The terms and definitions defined in ISO 5598, ISO 6953-1 and GB/T 39956.1 apply to this document.

4 Symbols and units

The following symbols and units apply to this document, see Table 1.

GB/T 42155 | GB/T 40565.4 | GB/T 40565.3 | GB/T 39949.2 | GB/T 39949.1 | GB/T 39956.1 | […]