GB/T 20081.3-2021Pneumatic fluid power - Compressed air pressure regulators and filter-regulators - Part 3: Alternative test methods for measuring the flow-rate characteristics of pressure regulators (English PDF)

1 Scope

This document specifies optional test methods for testing the flow characteristics of pneumatic components.

This document is only applicable to the test of the decreasing part of the hysteresis curve of the forward flow and overflow flow characteristics that meet the following conditions.

---Compared with the response of the pressure change in the inflation and deflation test, the pressure change of the component under test is fast enough and can be ignored;

--- There is no overshoot or oscillation in the pressure response.

This document specifies the requirements for test equipment, test procedures and test results.

This document gives examples of test results (see Appendix A), various data processing methods (see Appendix B), and visual data processing procedures (See Appendix C), and a diagram showing the overshoot and undershoot of the adjustment pressure response and the inlet pressure change beyond the allowable range (see Appendix D).

This document applies to the following components.

---Comply with ISO 6953-1 pressure reducing valve and filter pressure reducing valve;

---Electric-pneumatic pressure control valve conforming to ISO 10094;

--- Other components, such as overflow valves.

Note. If pressure regulation characteristics are required, ISO 6953-2 is applicable.

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.

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-ratecharacteristicsofcomponents-Part 1.

Generalrulesandtestmethodsforsteady-stateflow)

ISO 6358-2 Determination of flow characteristics of compressible fluid components used in pneumatics. Part 2.Alternative test methods (Pneu- maticfluidpower-Determinationofflow-ratecharacteristicsofcomponents-Part 2.Alternativetest methods)

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 characteristicstobeincludedinliteraturefromsuppliersandproductmarkingrequirements)

ISO 6953-2 Pneumatic pressure reducing valves and filter pressure reducing valves Part 2.Tests to assess the main characteristics that should be included in commercial documents

Method (Pneumaticfluidpower-Compressedairpressureregulatorsandfilter-regulators-Part 2.Test methodstodeterminethemaincharacteristicstobeincludedinliteraturefromsuppliers)

ISO 10094-1 Pneumatic electro-pneumatic pressure control valve Part 1.Main characteristics to be included in commercial documents (Pneumatic fluidpower-Electro-pneumaticpressurecontrolvalves-Part 1.maincharacteristicstoincludeinthe supplier'sliterature)

GB/T 20080 | GB/T 17491 | GB/T 20079 | GB/T 14038 | GB/T 20081.2 | GB/T 20081.1 | […]