GB/T 4213-2024 (GB/T 4213-2008) PDF English
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GB/T 4213-2008: PDF in English (GBT 4213-2008) GB/T 4213-2008
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 23.060.01
N 16
Replacing GB/T 4213-1992
Pneumatic industrial process control valves
气动调节阀
ISSUED ON. JULY 28, 2008
IMPLEMENTED ON. FEBRUARY 01, 2009
Issued by.
General Administration of Quality Supervision, Inspection
and Quarantine of the People’s Republic of China;
Standardization Administration of the People’s Republic of
China.
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative references ... 5
3 Terms and definitions ... 5
4 Product classification and general requirements ... 5
5 Technical requirements... 8
6 Test methods ... 15
7 Inspection rules ... 22
8 Marking, packing and storage ... 24
Foreword
This Standard revises and replaces GB/T 4213-1992 “Pneumatic industrial
process control valves”.
Compared with GB/T 4213-1992, the main changes are as follows.
- UPDATE the normative references;
- REVISE and SUPPLEMENT partially the nominal diameter series and nominal
pressure grade series;
- DELETE the signal range;
- ADD maximum allowable value of dead band;
- REVISE the requirements and test range for the hysteresis plus dead band and
the deviation between the initial and terminal points;
- ADD the consideration to the noise prediction and calculation;
- ADD the test requirements of leakage amount when valve delivered separately
in the inspection rules;
- REVISE partially the marking to highlight the compulsory mark;
- CHANGE the notes with demanding or regulatory into test;
- REVISE editorially the Standard in accordance with the provisions in GB/T
1.1-2000.
This Standard was proposed by China Machinery Industry Federation.
This Standard shall be under the jurisdiction of National Standardization Technical
Committee of Industrial Process Measurement and Control (SAC/TC 124).
Responsible drafting organization of this Standard. Shanghai Institute of Process
Automation Instrumentation.
Participating drafting organizations of this Standard. Shanghai Inspection and Testing
Institute of Instruments and Automation Systems, Shanghai SIPAI Instruments and
System Co., Ltd, Ningxia Yinxing Energy Wuzhong Instrument and Meter Co., Ltd,
Tianjin Jingtong Control Instrument Technologies Co., Ltd, Shanghai Automation
Instrumentation Co., Ltd. No.7 Automatic Instrument Factory, Anshan Automation
Control Instrument (Group) Co., Ltd and Chongqing Chuanyi No.11 Factory Co., Ltd.
The main drafters of this Standard. Wang Jiong, Chen Mengnan, Li Minghua, Wang
Keqiang, Ma Yushan, Wang Yong, Yang Jianwen, Fan Ping, Li Lei, Wang Yan, Gao
Pneumatic Industrial Process Control Valves
1 Scope
This Standard specifies the product classification, technical requirements, test
methods, inspection rules and so on of the pneumatic industrial process control
valves (also named as “control valve”) used for industrial process control system.
This Standard applies to various pneumatic industrial process control valves which
composed of pneumatic actuator and valve (hereinafter referred to as “control valve”).
The relevant contents in this Standard also apply to the independent pneumatic
actuator and valve components.
This Standard do not apply to control valves on which the State has specific
requirements of working conditions, such as enduring the radioactive working
conditions.
2 Normative references
The provisions in following documents become the provisions of this Standard through
reference in this Standard. For dated references, the subsequent amendments
(excluding corrections) or revisions do not apply to this Standard, however, parties
who reach an agreement based on this Standard are encouraged to study if the latest
versions of these documents are applicable. For undated references, the latest edition
of the referenced document applies.
GB/T 15464 General-purpose specification for the packaging of instrumentation
products
GB/T 17213 (All the parts) Industrial-process control valves
JB/T 8212-1999 Terms for final controlling element
3 Terms and definitions
The terms and definition established in GB/T 17213 and JB/T 8218-1999 apply to this
Standard.
4 Product classification and general requirements
4.1 Classification according to motion manner of control valve
a) linear motion control valve;
b) Rotary motion control valve.
4.2 Classification according to adjustment mode of control valve
a) regulating type;
b) cutting-off type;
c) regulating and cutting-off type.
4.3 Classification according to action mode of control valve
a) air to close type;
b) air to open type.
4.4 Classification according to actuator mode of control valve
a) pneumatic diaphragm control valve;
b) pneumatic piston control valve.
4.5 Nominal diameter (DN)
Select the values following the nominal diameter DN of control valve from the
following optimal number system; the organization is millimeters (mm);
6, 10, 15, 20, 25, 32, 40, 50, 65, 80, 100, 125, 150, 200, 250, 300, 350, 400, 450, 500,
600, 700, 800, 900, 1000, 1200, 1400, 1600, 1800, 2000.
4.6 Nominal pressure (PN)
Select the values following the nominal pressure mark PN of control valve from the
following values; the organization is 1/10 megapascal (1/10 MPa);
2, 5, 6, 10, 16, 20, 25, 40, 50, 64, 100, 110, 160, 250, 260, 320, 420, 1600, 2500.
Note. the corresponding relationship between the nominal pressure parts marked in the forms of PN and
Class. PN20. class 150; PN 50. class 300; PN 64. class 400; PN110. class 600; PN160. class 900;
PN260. class 1500; PN420. class 2500.
4.7 Range of input signal
a) range of standard input pressure signal of control valve. 20kPa~100kPa;
b) for the cutting-off type control valves, select the range of input signal randomly
within the rated pressure of air source;
threaded;
b) the type and size of the end connection of control valve shall conform to the
provisions in GB/T 17213 and other corresponding national standards and
industrial standards;
c) other standards or the specific type and size of the end connection required by
the user (the ordering party).
5 Technical requirements
5.1 Basic error
The basic error of control valve shall be not more than the basic error limitations
specified in Table 1; the basic error shall be expressed by the percentage of rated
travel of control valve. The control valves of which the pressure range of spring is
beyond 20 kPa~100 kPa, 40 kPa~200 kPa, 60 kPa~300 kPa and the cutting-off type
control valves shall not be tested.
5.2 Hysteresis plus dead band
The hysteresis plus dead band of control valve shall be not beyond the provisions in
Table 1. The hysteresis plus dead band shall be expressed by the percentage of rated
travel of control valve. The control valve without positioner and of which the pressure
range of spring is beyond 20 kPa~100 kPa, 40 kPa~200 kPa, 60 kPa~300 kPa and
the cutting-off type control valve shall not be tested.
5.3 Dead band
The dead band of control valve shall be not beyond the provisions in Table 1. The
dead band shall be expressed by the percentage of the input signal measuring range
of control valve. The control valves of which the pressure range of spring is beyond 20
kPa~100 kPa, 40 kPa~200 kPa, 60 kPa~300 kPa and the cutting-off type control
valves shall not be tested.
5.4 Deviation between the initial and terminal points
When the input signal of pneumatic actuator is the upper or lower limitation value, the
initial point deviation of the air to open type control valve and the terminal point
deviation of the air to close type control valve shall be not beyond the provisions in
Table 1. The deviation between the initial and terminal point shall be expressed by the
percentage of rated travel of control valve. The cutting-off type control valve shall not
be tested.
dimensionless;
F -
the ratio of specific heat coefficient, (air within the range of specified temperature, F =1),
which is dimensionless;
TX -
the differential pressure ratio coefficient of control valve without fittings under the condition
of choked flow, which is dimensionless;
1p - the absolute pressure in front of valve, kPa;
2p - the absolute pressure behind the value, kPa;
p - the differential pressure in front and behind the valve, kPa;
t - the temperature of test medium, which is taken as 20°C;
G - the proportion of gases, air=1;
0/ - the relative density (water within the range of specified temperature, 0/ =1).
5.7 Sealing of stuffing box and other joints
The stuffing box and other joints of the control valve shall ensure having no seepage
phenomenon under 1.1 times of the nominal pressure. The test pressure of control
valves for special purpose shall be negotiated by the manufacture and the user (the
ordering party).
5.8 Sealing of the air chamber
The air chamber of pneumatic actuator shall be ensured to be air tight. Under the
rated pressure of gas source, the pressure drop in diaphragm air chamber within 5
...
......
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.
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