This standard specifies the basic parameters, technical requirements, test methods, inspection rules and marking, packaging, transportation and storage requirements of hydraulic pressure reducing valves and one-way pressure reducing valves. JB/T 10367-2002 Hydraulic pressure reducing valve JB/T10367-2002 Standard download decompression password: www.bzxz.net

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Machinery Industry Standard of the People's Republic of China
JBT103672002
Hydraulic pressure reducing valve
Hydraulis ftuid powerpressurereducingvalve2002-12-27Published
2003-04-01Implementation
Published by National Economic and Trade Commission of the People's Republic of ChinaForeword
Scope．
Normative reference documents
Terms and definitions
Numbers and specifications
5.Basic parameters for marking
5.1 Basic parameters for environmental marking
6 Technical requirements,
General requirements
Performance requirements
Assembly requirements,
6.4 Appearance requirements,
7 Performance test methods
7.1 Test equipment,
Test case
............................................................ .3 Test items and/or test methods,
8 Assembly and appearance requirements
Inspection regulations,
9.1 Test points.
9.2 Sampling
9.3 Semi-determined purchase
10 Standardization, packaging, transportation and storage...
Appendix A (Specification requirements) Test circuit and characteristics A.1 Test circuit
A2 Characteristic curve
Factory inspection circuit
Type test circuit
Force change during export adjustment Force change characteristic curve A.4
Flow rate change The outlet set pressure change characteristic is the pressure difference near the inlet and outlet, and the external leakage is felt as a reverse flow. The pressure relief characteristic curve of the test system is shown in the figure. When the inlet pressure changes step by step, the outlet set pressure response characteristic of the test valve 4 is shown. When the flow rate changes step by step, the outlet set pressure response characteristic of the test valve 4 is shown, and the pressure relief characteristic is shown in the figure! , Symbols and units
JB/T10987-2002
JI/T10367—2002
Permissible variation range of average display value of the accused wind Table 2
Table 3:
Permissible system error of the measurement system.
Factory test items and test methods
Table 5 Type test items and test methods..
Assembly and appearance inspection methods
The appendix A of the standard is a normative appendix.
Proposed by China Machinery Industry Federation. Foreword
Proposed and managed by the National Hydraulic and Pneumatic Standardization Technical Committee. JB/T10367..2002
Drafting units of this standard: 1. Hydraulic and Pneumatic General Company, Beijing Machinery Industry Automation Research Institute, Tailian Combined Machine Tool Research Institute Hydraulic Technology Engineering Company.
The main players in this standard are: Zhang Qianlong, Mi Jianxin, Yue Suilin, Shen Guangeng, Lin! . This standard is the first release.
Scope
Hydraulic pressure reducing valve
JB/T10367—2002
This standard specifies the basic parameters, technical requirements, test methods, inspection and marking, installation, operation and storage requirements of hydraulic pressure reducing valves and one-way pressure reducing valves (hereinafter referred to as pressure reducing valves). This standard is applicable to pressure reducing valves with hydraulic oil or other liquids with equivalent performance as working fluid, through-connected, double-connected and superimposed connections:
2 Normative referenced documents
The remaining items in the following documents become the clauses of the standard through reference in this standard. For any referenced documents, all subsequent amendments (excluding outdated content) or revised versions shall not apply to this standard. However, all parties involved in the cooperation based on this standard are encouraged to study and consult the latest versions of these documents. These are academic documents with no date, and their latest versions are used in this standard. GB/T78G.1 Fluid and pneumatic graphic symbols: GB.T786.1—1993, egyISO1219-1:1991, Fluid power systems and components Graphic synsbols and citcuit diagrams Part I: Graphic symbols? GB2346 Hydraulic and pneumatic systems and components Nominal three-force series 8 Reverse batch inspection counting sample sequence and sample arrangement table (applicable to inspection of continuous batches): GB2828
GB/T2878
Wave pressure parts pattern and size
GB/T7935
General technical specifications for hydraulic components
GBIT B099
Installation surface of integrated valve
Plate type linkage pressure control steel, sequence valve, unloading valve, throttle valve and single valve installation surface GBTSICO
GR/T140392002 Pressure transmission oil solid particle pollution paper generation (GB/T1-:0392002.JSO14061A99.MOD:
Solid transmission system and terminology 1GB/T17446-1999, 1S05598:1985GBT74AG
GB/T174R9
Pressure tax pollution potential analysis based on short attack sample in T operation system pipeline 0T174R91998, id1S04021:JR/T7658
Hydraulic component cleaning method assessment method and liquid ternary operation Cleanliness index 3 Terms and definitions
GD17446 neutral and the following terms and definitions apply to this standard, 3.
Nominal flow
Nominal flow
Nominal flow rate.
Test flow rate Www.bzxZ.net
Test the energy required by the test subject.
4. Quantity, symbol and unit
The following symbols and units are shown in Table 1.
JB/T10367—20D2
Two nominal diameters
Evaluated volume flow
Pipeline inner diameter
Pressure, pressure difference
Oil concentration density
Kinematic viscosity
Volume readability, etc.
Note. M
-Contained: L-
Notation and basic numbers
5.1 Notation
Long waste: T
Table 1 Quantity, symbol and unit
p, 4p
Time: one.
Pa(MFa)
s
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