- 1 - ICS 83.160.01  
G 41  
 
 
 
 
National Standard  
of the People's Republic of China  
 
 
GB1796.1 – 200X  
Replaces part of GB 1796 -1996  
 
 
Tyre valves  
Part 1: Clamp -in valves  
  
(ISO 9413: 1998, Tyre valves – Dimensions and designation, NEQ)  
 
 
Draft for approval  
 
 
 
Issue Date: 200X – XX – XX Implementation Date: 200X – XX – XX
 
General Administration of Quality Supervision, Inspection and Quarantine  
of the People's Republic of China  
 
Standardisation Administration of the People's Republic of China (SAC)  
 
Issue  
- 2 -           GB 1796.1 - 200X  
 
Foreword  
 
 
 
Clause 9 of this Part is mandatory while the rest are recommended.  
 
GB 1796,  “Tyre Valves” is divided into six parts:  
− Part 1: Clamp -in valves;  
− Part 2: Rubber base valves;  
− Part 3: Snap -in valves;  
− Part 4: Clamp -in tubele ss valves;  
− Part 5: Large core chamber valves;  
− Part 6: Cores.  
 
This is Part 1 of GB 1796, corresponding to ISO 9413: 1998, “Tyre valves – Dimensions and 
designation”, (English version). The consistency degree of this part and ISO 9413: 1998 is non -
equivalen t. 
 
This Part replaces the “clamp -in valves” Part  found in GB 1796 – 1996 “Tyre valve”.  
 
This part compares to GB 1796 -1996, the main changes are:  
− “terms and definitions” have been added (see Clause 3);  
− model AA01, AA01C, AB01, AB03C, AB04C and CB11C valve s and their corresponding 
contents in Table 1 have been added;  
− model I02, I01C, I04C protective -cap have been added;  
− certain dimension tolerances have been amended (former edition Clause 5, current edition 
Clause 6);  
− certain valve specifications have been added (former edition Clause 4, current edition Clause 5);  
− certain valve components specifications have been added (former edition Clause 5, current 
edition Clause 6);  
− model QD5 spacer and model C protective -cap have been withdrawn (former edition Clause  5, 
current edition Clause 6);  
− tooth profile, limit size and tolerance specification for model 5CV and 8CV threads have been 
added (see  6.7);  
− maximum usable pressure for valves has been amended (former edition 6.3, current edition 
Clause 8);  
− installation torque of hexagon nuts has been added (see Clause 10);  
− air-tightness of the seal -cap has increased (see Clause 11);  
− “test methods” have been amended (former edition 6.4, current edition Clause 12);  
− test regulations have been amended (former edition Clause 7, current edition Clause 9);  
− Appendix A has been amended (former edition Appendix A, current edition Appendix A).  
 
Appendix A to this Part is information data.  
 
This part is proposed by China Petroleum and Chemical Industry Association (CPCIA).  
 
National Technical Committee for Standardisation of Tyres and Rims implemented this Part under 
centralised management.  - 3 -  
 
Main drafting units of this Part:  
Shandong Gaotian Hardware Manufacturing Limited;  
Jiangyin Chuangxin Tyre Valve Co., Ltd  
 
 
Participating draft ing units of this Part:  
Tianjin Bicycle Factory No 2 Branch No 2  
Ningbo Jinzhou Shuguang Mechatronics Co., Ltd  
Foshan Shunde Anchi Industrial Co., Ltd.  
 
Main drafters of this Part: LiFeng, LuXiaoYong, LiuHaiYan, ZhangHaoBo, LiZhanGang.  
 
This Part replaces  certain Parts of the previously issued standards:  
-GB 1796 -1979, GB 1796 – 1988, GB 1796 – 1996.  
 
 
 - 4 -           GB 1796.1 - 200X  
Tyre Valves  
Part 1: Clamp -in valves  
 
1 Scope  
This Part of GB 1796 specifies the terms and definitions, models and symbols, stru ctural forms, 
component type, structural sizes and materials, appearance, maximum usable pressure, air -tightness, 
the installation torque of hexagon nuts and valve end, the air -tightness of seal -cap, test methods, test 
regulations, labelling, packaging and  storage requirements for clamp -in valves (hereinafter 
abbreviated as valves).  
 
This Part applies to valves for motorcycles and cycles.  
2 Normative References  
The provisions of the following documents become provisions of this Standard after being 
referenc ed with the quotation GB 1796 Part 1. For dated reference documents, all later amendments 
(excluding corrigenda) and versions do not apply to this Part; however, the parties to the agreement 
are encouraged to study whether the latest versions of these docu ments are applicable. For undated 
reference documents, the latest versions apply to this Standard.  
 
GB 1796.6 Tyre valves, Part 6: cores (GB1796.6 -xxxx, ISO9413: 1998, Tyre valves - Dimensions 
and designation, NEQ)  
 
GB/T 2828.1 -2003 Sampling procedures fo r inspection by attributes --part 1: Sampling schemes 
indexed by acceptance quality limit (AQL) for lot -by-lot inspection (ISO 2859 -1: 1999; IDT)  
 
GB 9764 Tyre valves – Core chambers (GB 9764 – 1997, neq ISO 6762: 1982; ISO 7442:1982)  
 
GB 9765 Tyre valve th reads (GB 9765 – 1997, neq ISO 4570 -1: 1977, ISO 4570 – 2:1979, ISO 
4570 – 3: 1980)  
 
GB/T 9766.1 Test method for tyre valve, part 1: Test method for clamp -in valves  
 
GB/T 12839 Tyre valves - Terms and definitions (GB/T 12839 – 2005. ISO 3877 – 2: 1997, Ty res, 
Valves and tubes – list of equivalent terms – part 2: Tyre Valves, NEQ)  
 
GB/T XXXX Labelling method for tyre valves and their components (GB/T XXXX – XXXX, ISO 
10475: 1992, Valves for tubeless tyres and valves for tubes – Identification system for val ves and 
their components, MOD)  
3 Terms and definitions  
The terms and definitions set out in GB/T 12839 apply to this Part.  
4 Models and symbols  
The models and symbols of the products should conform to the regulations set out in GB/T XXXX. 
The model in this  Part meets the foreign standard model; see Appendix A also.  - 5 - 5 Structural form  
The structural form of the valves should conform to the requirements shown in Table 1 and 
Diagrams 1 - 4. 
Table 1  
Components  Model  Diagram  
Spacer  Nut Protective -
Cap Core  Suitable 
valve hole 
diameter  
mm Reference 
Application  
AA01  
AA01C  Diagram 1  D06 E12, F03  I07 H03C  6.2  Cycles  
AB01  Diagram 2  D01 E01, F03, 
F04C  I07 H04C  
AB03C  
AB04C  Diagram 3  D15C or 
D16C  E01C, 
F02C, 
F03C  I03C  H04C or 
H05C  
CB03  H01 
CB07C  H01S  
CB09C  
CB10C  
CB11C  Diagram 4  D01 or 
D02C  E01, F01 
or F01C  I01 or I02 
or I01C or 
I02C or 
I04C  H01 8.3  Motorcycles 
or Cycles  
 
 
 
1-I07 Protective -Cap;  2-H03C Valve Core;  3-Valve;  4-F03 Rim Nut;  
5-E12 Hexagon Nut   6-D06 Spacer  
 
Diagram 1  AA01, AA01C Valve  
- 6 -  
 
1- I07 or I03C Protective -Cap;  2- H04C Valve Core;  3-F04C Core Hold -down Nut;   
4- Valve;  5- F01 Rim Nut;  6- E01 Hexagon Nut;  7- D01 Spacer;   
Diagram 2  AB01 Valve  
 
 
 
1-I03C or I07 Protective -Cap;  2-H04C or H05C Val ve Core;  3-F03C Core Hold -down 
Nut; 4-Valve;  5-F02C Rim Nut;  6-E01C Hexagon Nut;  7-D15C or D16C Spacer  
Diagram 3  AB03C, AB04C Valve  
- 7 -  
 
 
1- I01 or I02 or I01C or I02C or I04C Protective -Cap; 2 - H01 Valve Core; 3 -F01 or F01C Rim Nut;  
4- Valve;  5- E01 Hexago n Nut;  6- D01 or D02C Spacer;  
 
Diagram 4  CB03, CB07C, CB09C, CB10C, CB11C Valves  
 
6 Models, structural dimensions and materials of components  
6.1 Valve  
The models, structural dimensions and materials of the valves should meet the requirements set 
out in Ta ble 2 and Diagram 5 - Diagram 8.  
 
Table 2  
Model  Diagram  Core Chamber Model  Materials   
AA01, AA01C  Diagram 5  - 
AB01  Diagram 6  - 
AB03C, AB04C  Diagram 7  - 
CB07C  1B 
CB03, CB09C, 
CB10C, CB11C  Diagram 8  
1A Brass or other metal 
materials  
 
 
 
 
 
- 8 -  
 
 
 
 
 
 
 
 
Model  L 
AA01  27 
AA01C  30 
 
Diagram 5  AA01, AA01C Valve  
 
- 9 -  
 
 Diagram 6  AB01 Valve     Diagram 7  AB03C, AB04C Valve  
 
Model  L d H 
CB07Ca 30 15 2.2 
CB03  33.5 14 2.7 
CB09C  34 2.5 
CB10C  46 
CB11C  40 18 
2.2 
a Suitable for H01S valve cores only.  
 
Diagram 8  CB07C, CB03, CB09C ~ CB11C Valves  
6.2 Spacers  
The models, structural dimensions and materials of the spacers should conform to the 
requirements set out in Table 3 and Diagram 9.   
 
Table 3  
Model  Material  Suitable Valves  
D01 AB01 , CB03C, CB07C, CB09C 
- CB11C  D02C  
D06 CB03, CB07C, CB09C - 
CB11C  
D15C  Steel or brass  
AB01, AB01C  
- 10 - D16C  
AB03C, AB04C  
 
 
Diagram 9   D01, D02C, D06, D15C, D16C Spacers  
 
6.3 Nuts  
The models, structural dimensions and materials of the nuts should conform  to the requirements set 
out in Table 4 and Diagrams 10 - 13. 
 
 
 
 
 
 
 
 
Table 4  
Model  Diagram  Materials  Suitable Valves  
E01 AB01, CB03, CB07C, 
CB09C ~ CB11C  E01C  
AB03C, AB04C  E12 Diagram 10  
AA01, AA01C  F01 
F01C  AB01, CB03, CB07C, 
CB09C ~ CB11C  
F02C  Diagram 11  Brass or other metal 
materials  
CB03, CB07C, CB09 ~ 
- 11 - F03 
F03C  Diagram 12  AB03C, AB04C  
AA01, AA01C  
AB03C, AB04C  F04C  Diagram 13  
AB01  
 
 
 
 
Diagram 10  E01, E12, E01C Hexagon Nuts  
 
 
 
 
- 12 -  
 
 
Diagram 13  F04C Core Hold -down Nut  
 
6.4 Protective -Cap 
The models, structural dimensions and materials of the protective cap should conform to the 
requirements set out in Table 5 and Diagrams14 - 20. 
 
Table 5  
Model  Diagram  Material  
I07 Diagram 14  Plastic  
- 13 - I03C  Diagram 15  
I01 Diagram 16  
I02 Diagram 17  
I01C  Diagram 18  Brass, Rubber  
I02C  Diagram 19  
I04C  Diagram 20  Plastic  
 
 
 
  
- 14 -  
 
Diagram 20  I04 Cap  
6.5 Valve Core  
The valve core should meet the requirements set out in GB1796.6.  
6.6 Core Chamber  
The c ore chamber should meet the requirements set out in GB9764.  
6.7 Threads  
See diagram 21 to check the tooth -profile, limit size and tolerance of the thread models 5CV 
and 8CV. The tooth -profile, limit size and tolerance of the model 5V2, 6V1 and 8V1 threads 
should meet the requirements set out in GB9765; the limit size and tolerance of threads 5V2, 
5CV and 8V1 are not suitable for model I07, I03C, I02C and I04 protective -caps.  
7 Appearance  
The surface of the metal components of every model valve cores should be treated with antiseptic; 
there should be no faults that may affect usable performance such as greasy dirt, rust -corrosion or 
cracks.  
 
 
 
- 15 - 8 Maximum usable pressure  
See Table 6 to check the maximum usable pressure for the valves.  
 
Table 6  
Valve Models  Maxi mum Usable Pressure  
KPa 
AA01, AA01C  900 
CB03, CB07C, CB09C ~ CB11C, 
AB01, AB03C, AB04C  700 
 
9 Air-tightness  
Under the maximum specified usable pressure, the air -tightness of the whole valve should be 
ensured.  
10 The installation torque of the hexagon nu ts and valve   
The installation torque of model 6V1 nut is: 2N.m - 3.5N.m; the installation torque of model 8V1, 
8CV nuts is: 3N.m - 5N.m.  
11 Air-tightness of the seal -cap 
The maximum seal pressure of model I01, I02 and I01C seal -caps should not be less tha n 700KPa.  
12 Test Methods  
12.1 For the appearance test perform a visual examination.  
 
P-Thread Pitch;  d-External Thread – Major Diameter;   
d1-External Thread – Minor Diameter;  d2-External Thread – Pitch Diameter;   
D-Internal Thread – Major Diameter;  D1-Internal Thread – Minor Diameter;   
D2-Internal Thread – Pitch Diameter  
 
 
- 16 - External Thread  
Major Diameter d  Pitch Diameter d2  Minor 
Diameter 
d1 Thread 
Code  Nominal 
Size 
(d x p)  
Maximu
m Nominal 
Td Minimu
m Maximu
m Nominal 
Td2 Minimum  Maximu
m 
5CV  5.1x1.058  5.05 0.28 4.77 4.36 0.14 4.22 3.75 
8CV  8.1x0.847  7.96 0.23 7.73 7.41 0.13 7.28 6.92 
 
Internal Thread  
Minor Diameter D1  Pitch Diameter D2  Major 
Diameter 
D  
Thread 
Code   
Nominal 
Size 
(d x p)  
Maximu
m Nominal 
TD1 Minimu
m Maximu
m Nominal 
TD2 Minimum  Minimum  
5CV  5.1x1.058  4.21 0.26 3.95 4.59 0.18 4.41 5.20 
8CV  8.1x0.847  7.34 0.16 7.18 7.72 0.17 7.55 8.1 
 
Diagram 21 Tooth -profile, limit size and tolerance for 5CV and 8CV threads  
 
12.2 Throat diameter and cone position  
Use a special gauge or general ga uge to measure the throat diameter and cone position.  
12.3 Pitch diameter and major diameter of external thread; pitch diameter and minor 
diameter of internal thread, and internal thread depth dimension  
Use a thread go -gauge to measure pitch diameter of ex ternal thread, pitch diameter of internal 
thread and internal thread depth. Use a smooth go -gauge, smooth no -go-gauge or general gauge 
to measure the major diameter of external thread and minor diameter of internal thread.  
 
12.4 Other test methods  
Other te st methods should be carried out according to the requirements set out in GB/T9766.1.  
 - 17 - 13 Test Regulations  
13.1 The sampling procedures and its implementation of the valve should be according to the 
regulations in GB/T 2828.1 – 2003.  
13.1.1  Each storage ba tch or dispatch batch of the same model valves should be regarded as one 
inspection batch.  
13.1.2  According to the importance of the quality characteristics, divide the valves which fail to 
meet the requirements into defective valve class A, class B or cla ss C. These groups are then further 
classified into several inspection groups as shown in Table 7.  
13.1.3  The Acceptance Quality Limit (AQL) (use defective item number in each one hundred 
products to indicate) and Inspection Level (IL) of each inspection g roup should meet with the 
requirements in table 7.  
13.2 When carrying out an inspection, determine whether the valves qualify or are defective 
according to the inspection group division in Table 7.  
13.3 The handling method after batch inspection should be carried out according to the 
requirements set out in GB/T 2828.1 – 2003.  
Table 7  
 
Defective 
Classes  Inspection 
Group  Inspection 
Items  AQL  IL Test Method  
A1 9 leak -
tightness  0.40 According to 
GB/T9766.1  Class A  
A2  0.65 S-3 
According to 
12.1 
S-2 According to 
12.2 
I According to 
12.3 B1 6.6 position 
and dimension 
of cone of 
valve core 
chamber No1  Class B  
B2 6.6 throat 
diameter 
dimensions of 
valve core 
chamber No1  2.5 
S-3 According to 
12.3 - 18 - B3 6.7 the pitch 
diameter, 
minor diameter 
and de pth 
dimensions of 
5V1 thread of 
valve core 
chamber  
C1 6.7 the pitch 
diameter and 
major diameter 
of external 
thread of 8CV 
valve  
C2 6.7 the pitch 
diameter and 
major diameter 
of external 
thread of 8V1 
valve mouth  
C3 6.7 the pitch 
diame ter and 
major diameter 
of external 
thread of 6V1 
valve  Class C  
C4 6.7 The pitch 
diameter and 
minor diameter 
of Internal 
thread of 8CV 
hexagon nut  
C5 6.7 The pitch 
diameter and 
minor diameter 
of Internal 
thread of 6V1 
nut  Class C  
C6 6.7 The pitch 
diameter and 
minor diameter 
of Internal 
thread of 8V1 
nut  
Class C  C7 6.7 The pitch 
diameter and 6.5 S-3  - 19 - According to 
GB/T9766.1  
C8 6.7 The pitch 
diameter an d 
minor diameter 
of Internal 
thread of rim 
nut 
C9 10 Installation 
torque of 
hexagon nut 
and valve  
C10 11 Leak -
tightness of 
seal-cap 4.0 According to 
GB/T9766.1  
S-3 According to 
12.2 C11 6.1 specified 
valve throat 
dimension of 
model AB01, 
AB03C, 
AB04C  
C12  6.5 
I According to 
12.1 
C13  10 II According to 
12.2 
 
14 Labelling, packaging and storage  
14.1 Labelling  
There labelling on the outer packaging of the valves should indicate the:  
a) name and address of the manufacturer, trademark;  
b) product name,;  
c) product m odel;  
d) quantity  
e) production date  - 20 - 14.2 Packaging  
14.2.1 Products can be either packed as sets or as individual components.  
14.2.2  Use a plastic bag for the inner packaging and a cardboard or wooden box for the outer 
packaging.  
14.2.3  A copy of the product qua lification certificate should be enclosed in the inside packaging 
box (bag).  
14.3 Storage  
The products should be stored in a dry, well -ventilated, anti -corrosion and greasy -dirt free 
warehouse, away from high temperature and sunlight.  - 21 - Appendix A  
 
(Informa tion appendix)  
Models in this Part in comparison to overseas models  
 
Table A.1 presents the comparison table for models of this part and overseas models  
 
Table A.1