- 1 - ICS 83.160.01  
G 41  
 
 
 
 
National Standard  
of the People's Republic of China  
 
 
GB1796.3 – XXXX  
Replaces part of GB 12836.1 -1999  
 
Tyre valves  
Part 3: Snap -in valves  
  
(ISO 9413: 1998, Tyre valves – Dimensions and designation, NEQ  
ISO 14960:2004, Tubeless  tyres - Valves and components – Test methods, 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  
 
Stand ardisation Administration of the People's Republic of China (SAC)  
 
Issue  
- 2 -           GB 1796.3 - XXXX  
 
Foreword  
 
Clauses 10, 11.1 and 12 of this Part are mandatory while the rest are recommended.  
 
GB 1796,  “Tyre Valves” is divided into six parts:  
− Part 1: C lamp -in valves;  
− Part 2: Rubber base valves;  
− Part 3: Snap -in valves;  
− Part 4: Clamp -in tubeless valves;  
− Part 5: Large core chamber valves;  
− Part 6: Cores.  
 
This is Part 3 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 and 
ISO14960: 2004 is non -equivalent.  
 
This part replaces GB 12836.1 - 1999 “Tubeless valves – Part 1: Snap -in valves”.  
 
The main changes in this part compared to GB 12836.1 - 1999  are: 
− rated atmospheric pressure has been amended: rated atmospheric pressure from 420kPa 
amended to maximum usable pressure 450kPa (former edition Clause 1, current edition Clause 
1); 
− “terms and definitions” have been added (see Clause 3);  
− model symbols h ave been amended (former edition Clause 3, current edition Clause 4);  
− model specification for CQ07C and CQ08C has been added (former edition Clause 4, current 
edition Clause 5);  
− model I01C and I02C protective -cap has been added (former edition Clause 5, cu rrent edition 
Clause 6);  
− model comparison table has been added (former edition Clause 5, current edition Clause 6);  
− valve body rubber hardness and its examination have been amended: shore A hardness from 70± 
5 changed to 65± 5, withdrawn rubber hardness te st after high -low temperatures (former edition 
Clause 6, current edition Clause 8);  
− pull-in force and breakaway force have been amended: pull -in force from 250N ~ 600N altered 
to 180N - 450N, breakaway force from greater than 750N altered to greater than 5 60N (former 
edition Clause 6, current edition Clause 9);  
− air-tightness, withdrawn air -tightness test under room temperature for valve body and valve 
mouth hole have been amended (former edition Clause 6, current edition Clause 11);  
− destruction request has been added (see Clause 13);  
− flexing resistance request has been added (see Clause 14);  
− test regulations have been amended (former edition Clause 8, current edition Clause 16).  
 
Appendix A to this Part is an information appendix.  
 
This part is proposed by t he China Petroleum and Chemical Industry Association (CPCIA).  
 
The National Technical Committee for Standardisation of Tyres and Rims implemented this part 
under centralised management.  
 - 3 - Main drafting units of the Standard : 
Hangzhou Hamaton Tyre Valves Co. , Ltd;  
Shanghai Zhongda Tyre Valves Co., Ltd.  
 
Participating drafting units of this Part:  
Gongzhuling Zhongda Co., Ltd;  
Ningbo Haofeng Sike Auto Parts Co., Ltd;  
Ningbo Siming Auto Parts Co., Ltd;  
Ningbo Jinzhou Shuguang Electro -Machinery Co., Ltd  
Jiangxi Valre Inside Factory.  
 
Main drafters of this Part: GuYiZhu, YuXiaoHua.  
 
Participating drafters of this Part: HanFaRui, LiYunXiang, MaoQianFang, ZhangHaoBo, LiuGang.  
 
This part is the substitution for parts of previously issued standards:  
-GB12836 -1991, GB1 2836.1 - 1999  
 
 - 4 -           GB 1796.3 - XXXX  
Tyre Valves  
Part 3: Snap -in valves  
1 Scope  
This Part of GB 1796 specifies the terms and definitions, product models and symbols, product 
structural forms, component structures, dimensions and materials, appearanc e, rubber hardness of 
valve body, installation properties, rubber and metal combinations, air -tightness, ozone resistance 
capability, demolition, flexing resistance, test methods, test regulations, labelling, packaging and 
storage for snap -in tyre valves ( hereinafter abbreviated as valves).  
 
This Part applies to tubeless tyre valves with valve mouth hole diameter of 11.3mm, maximum 
usable pressure of 475KPa, and valve mouth hole diameter of 15.7mm, maximum usable pressure 
of 450 kPa valves.  
2 Normative Refe rences  
The provisions of the following documents become provisions of this Standard after being 
referenced with the quotation GB 1796 Part 3. 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 documents are applicable. For undated 
reference documents, the latest versions apply to this Standard.  
 
GB1796.6 Tyre valves, Part 6: Cores (GB1796.6 – XXXX , ISO9413: 1998, Tyre valves – 
Dimensions and designation, NEQ)  
 
GB/T 2828.1 -2003 Sampling procedures for inspection by attributes --part 1: Sampling schemes 
indexed by acceptance quality limit (AQL) for lot -by-lot inspection (ISO 2859 -1: 1999; IDT)  
 
GB 976 4 Tyre valves – Core chambers (GB 9764 – 1997, neg ISO 7442:1982, ISO 6762: 1982)  
 
GB 9765 Tyre valve threads (GB 9765 – 1997, neg ISO 4570 -1: 1977, ISO 4570 – 2:1979, ISO 
4570 – 3: 1980)  
 
GB/T 9766.6 Test method for tyre valve - part 3: Test method for sn ap-in valves (GB/T 9766.3 – 
XXXX, ISO 14960: 2004, Tubeless tyres – Valves and components – Test methods, MOD)  
 
GB/T 12839  Tyre valves - Terms and definitions (GB/T 12839 – 2005. ISO 3877 – 2: 1997, Tyres, 
Valves and tubes – list of equivalent terms – pare 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 valves and 
their components, MOD)  
3 Terms and definitions  
The terms and definitions set out in GB/T 12839 apply to this Part of GB1796.  
 - 5 - 4 Product models and symbols  
The product models and symbols should conform to the regulations set out in GB/T XXXX. The 
models in this Part meet foreign standard model - see Ap pendix A also.  
5 Product structural form  
The structural forms of the products should conform to the requirements shown in Diagrams 1 and 
2. 
 
 
1- I01C or I02C Protective Cap;  2 – H01 Valve Core;  3 – Valve Body  
 
Diagram 1 DQ07C, DQ08C valves  
 
 
- 6 -  
 
1 – I01C or I02C Protective -Cap;  2 – H01 Valve Core;  3 – Valve Body  
 
Diagram 2 CQ01 - CQ06, CR01 and CR02 Valves  
 
6 Structural dimensions and materials of components  
6.1 Valve body  
6.1.1 The structural type and dimensions of the product should be in line with the r equirements 
shown in Diagrams 3 and 4.  
6.1.2  Threads 5V1 and 8V1 should be in line with the requirements set out in GB 9765.  
6.1.3  The core chamber should be in line with the requirements set out in GB 9764. With the 
exception of models CQ01 and DQ07C, use  core chamber 1B; for all other model valves use core 
chamber 1A.  
6.1.4  Valve body materials should be made of brass or other metal materials and rubber.  
 
- 7 - 6.2 Valve cores  
Valve cores should meet the requirements set out in GB 1796.6. With the exception of models 
CQ01 and DQ07C valves, use H01S valve cores; for all other model valves use H01 cores.  
6.3 Protective cap  
6.3.1 The protective cap should meet the requirements set out in Diagrams 5 and 6.  
6.3.2 I01C protective cap materials should be brass and rubb er; I02C protective cap materials 
should be plastic.  
 
 
Model  L Suitable valve mouth 
hole diameter  JATMA model  
DQ07C*  30 11.3 PVR70  
DQ08C  45 11.3 PVR71  
* only suitable for H01S valve cores  
 
 
- 8 - Diagram 3  DQ07C, DQ08C valves  
 
Model  L1 L2 L3 D d1 d2 Valve 
Mouth -Hole 
Diameter  TRA Model  
CQ01a 33.0 24.0 25.0 16.0 15.0 19.5 11.3 TR412  
CQ02  43.0 34.0 35.0 16.0 15.0 19.5 11.3 TR413  
CQ03  49.0 40.0 41.0 16.0 15.0 19.5 11.3 TR414  
CQ04  56.5 47.5 48.5 16.0 15.0 19.5 11.3 TR414L  
CQ05  62.0 53.0 54.0 16.0 15.0 19.5 11.3 TR418  
CQ06  75.0 66.0 67.0 16.0 15.0 19.5 11.3 TR423  
CR01  43.0 34.0 35.0 20.2 19.3 24.0 15.7 TR415  
CR02  62.0 53.0 54.0 20.2 19.3 24.0 15.7 TR425  
 a only suitable for H01S valve cores  
 
- 9 - Diagram 4  CQ01 ~ CQ06, CR01 and CR02 valves  
 
Diagram 5  I01C Seal -Cap    Diagram 6  I02C Protective Cap  
7 Appearance  
7.1 Faults such as inclusions, air bubbles, foam sponge or cracks, which may affect valve 
performance, are not permitted on the rubber outer surface of the valve body.  
7.2 Rubber adherences that may  interfere with the use of the valve are not permitted on the inner 
hole of the valve body.  
7.3 Rubber adherences that may interfere with the use of valve are not permitted on the external 
thread of the valve body.  
8 Rubber hardness of valve body  
Shore A h ardness is 65± 5.  
9 Installation properties  
Pull-in force: 180N - 450N,  
Break -away force: greater than 560N.  
10 Combination of rubber and metal  
The brass area indicated for each stripped valve should exceed 40mm2; no band shaped brass should 
be shown along  the valve axis direction.  
- 10 - 11 Air -tightness  
11.1 Under maximum usable pressure specified, the air -tightness of the valve should be ensured.  
11.2 Under pressure 475kPa, the air -tightness of the seal -cap should be ensured.  
12 Ozone resistance capability  
After the ozone resistance capability test, no cracking should appear.  
13 Destruction  
Within a temperature range of 20 0C - 26 0C and under 1400kPa pressure, the valve should be able 
to uphold for 2 minutes without being demolished.  
14 Flexing resistance  
After  the flexing resistance test, the valve should not be damaged, and after a visual examination, 
no clear cracking should be apparent on the valve body rubber.  
15 Test method  
15.1  Appearance  
Take a visual examination;  
15. 2  Throat diameter and cone face posi tion 
Use a special gauge or general measuring tools to measure the throat diameter and core face 
position.  
15.3  Pitch diameter, major diameter of external threads; pitch diameter, minor diameter and 
depth dimension of the internal threads  
Use a thread go -gauge to measure the pitch diameter of external thread, pitch diameter and depth of 
the internal thread, use a smooth go -gauge, smooth no -go-gauge or general measuring tools to 
measure the major diameter of the external thread and minor diameter of the inte rnal thread.  
15.4 Other test methods  
Other test methods should be carried out according to the regulations set out in GB/T 9766.3.  - 11 - 16 Test regulations  
16.1 The sampling procedures and its implementation of the valves should be performed according 
to the re gulations set out in GB/T 2828.1 – 2003.  
16.1.1  Each storage batch or dispatch batch of the same model valves should be regarded as one 
inspection batch.  
16.1.2  Divide the cores that fail to meet the requirements into defective core class A, class B and 
class C, according to the importance of quality characteristics. Each class is then divided into 
several inspection groups - see Table 1.  
16.1.3 The Acceptance Quality Limit (AQL) (use defective item number in each one hundred 
products to indicate) and Inspe ction Level (IL) of each inspection group should be in line with the 
requirements set out in table 1.  
16.2 When carrying out an inspection, determine whether the cores qualify or are defective 
according to the inspection group division in Table 1.  
16.3 The  handling method after batch inspection should be performed according to the requirements 
set out in GB/T 2828.1 – 2003.  
Table 1  
Defective Classes  Inspection 
Groups  Inspection Items  AQL  IL Test Method  
A1 11.1 air -tightness 
of valve body and 
valve  core  
A2 11.1 air -tightness 
of valve body and 
valve mouth hole 
under low 
temperature  
A3 11.1 air -tightness 
of valve body and 
valve hole under 
high temperature  0.65 
A4 10 combination of 
rubber and metal  1.5 Class A  
A5 12 ozone 
resistance 
capability   S-2 According to 
GB/T 9766.3  - 12 - B1 8 rubber hardness 
of valve body  
B2 9 installation 
properties  
B3 13 demolition  Class B  
B4 14 flexing 
resistance  2.5 
B5 6.1.3 dimension of 
the cone face 
position 10+0.4
_0  
B6 6.1.3 throat 
diameter 
3.8+0.04
+0.02   Class B  
B7 6.1.2 the minor 
diameter and depth 
of model 5V1 
threads   S-3 According to 
15.2 
According to 
15.2 C1 6.1.2 the major 
diameter, pitch 
diameter of model 
8V1 threads  
C2 11.2 air -tightness 
of the seal -cap 4.0 S-3 
According 
GB/T 9766.3  
C3 7.1 specified 
appearance quality  
C4 7.2 appearance 
quality  Class C  
C5 7.3 appearance 
quality   I According to 
15.1 
Note: groups A2, A3, A5, B3 and B4 are type test items.  
 - 13 - 17 Labelling, packaging and storage  
17.1 Labelling  
17.1.1  Product model and manufacturer symbols should be provided on the valve body.  
 17.1.2 The packages should include the following labels:  
a) manufacturing plant names and addresses, trademarks;  
b) product names;  
c) product models;  
d) quantity;  
e) production date.  
 
17.2  Packaging  
17.2.1  Products can be either packed as sets, or packed as individual components.  
17.2.2  Plastic bags should be used for inner packaging, and a cardboard box or wooden box for the 
outer packaging.  
17.2.3  A copy of the product qualification certific ate should be enclosed in the packaging box 
(bag).  
17.3 Storage  
The products should be stored in dry, ventilated, anti -corrosion and greasy -dirt free warehouses, 
away from high temperatures and sunlight. The storage time should not be longer than 6 months 
from the date of production.  
 - 14 - Appendix A  
(Information appendix)  
Models of this Part in comparison to overseas models  
 
Table A.1 presents a comparative table of models included in this Part and overseas models.  
 
Table A.1  comparison table for models of th is part and overseas models  
Current part  ISO 
9413:1998  TRA (2006)  ETRTO 
(2006)  JATMA 
(2007)  GB Diagram 
number  
DQ07C  - - - PVR70  - 1 
DQ08C  - - - PVR71  - 1 
CQ01  CQ01  TR412  V2.03.6  TR412  Z2-01-1 2 
CQ02  CQ02  TR413  V2.03.1  TR413  Z2-01-2 2 
CQ03  CQ03  TR414  V2.03.2  TR414  Z2-01-3 2 
CQ04  CQ04  TR414LL  V2.03.8  - Z2-01-8 2 
CQ05  CQ05  TR418  V2.03.4  TR418  Z2-01-4 2 
CQ06  CQ06  TR423  - TR423  Z2-01-5 2 
CR01  CR01  TR415  V2.03.3  TR415  Z2-01-6 2 
CR02  CR02  TR425  - TR425  Z2-01-7 2 
I01C  - - - - - 5 
I02C  - - - - Model A  6