This standard specifies the type, size, nominal pressure, operating temperature and technical requirements of polytetrafluoroethylene-rubber composite gaskets for pipe flanges. This standard is applicable to polytetrafluoroethylene-rubber composite gaskets for raised and full-face pipe flanges with corrosive media or high cleanliness requirements in the chemical, petrochemical, textile, pharmaceutical and other sectors. HG/T 21609-1996 Polytetrafluoroethylene-rubber composite gaskets for pipe flanges HG/T21609-1996 Standard download decompression password: www.bzxz.net

Industry Standard of the People's Republic of China
HG/T 21609--96
Polytetrafluoroethylene-rubber composite gasket for pipe flange
1996—09—10 Released
1997--01-01
Ministry of Chemical Industry of the People's Republic of China
Ministry of Chemical Industry Document
Chemical Construction Development (1996) No. 633
Notice on Issuing Two Industry Standards, Including "Liquid Loading and Unloading Arm"
To the Chemical Industry Departments (Bureaus, Companies) of all provinces, autonomous regions, municipalities directly under the Central Government, and cities with independent planning status, and all relevant design units:
Two standards, including "Liquid Loading and Unloading Arm" organized by the Process Piping Design Technology Center of the Ministry of Chemical Industry and edited by the Sixth Design Institute of the Ministry of Chemical Industry, and "Polytetrafluoroethylene-Rubber Composite Gasket for Pipe Flange" edited by the Process Piping Design Technology Center have been reviewed and approved as recommended standards, with the numbers HG/T21608--96 "Liquid Loading and Unloading Arm" and HG/T21609-96 "Polytetrafluoroethylene-Rubber Composite Gasket for Pipe Flange". They will be implemented from January 1, 1997.
These two standards are managed by the Process Piping Design Technology Center of the Ministry of Chemical Industry and published and distributed by the Ministry's Engineering Construction Standard Editing Center. Ministry of Chemical Industry
September 10, 1996
Industry Standard of the People's Republic of China
Polytetrafluoroethylene-rubber composite gasket for pipe flange HG/T 21609—96
Editor: Process Piping Design Technology Center of the Ministry of Chemical Industry
Approval Department: Chemical Industry
Implementation Date: January 1, 1997
Engineering Construction Standard Editing Center of the Ministry of Chemical Industry
1·Subject Content and Scope of Application
Reference Standards·
3Product Classification and Basic Parameters
Technical Conditions
5Marking·
Packaging·
Preparation Instructions
(3)
1Subject Content and Scope of Application
1.0.1This standard specifies the type, size, nominal pressure, operating temperature and technical requirements of polytetrafluoroethylene-rubber composite gaskets for pipe flanges. 1.0.2This standard is applicable to polytetrafluoroethylene-rubber composite gaskets for raised face and full-face pipe flanges with corrosive media or high cleanliness requirements in the chemical, petrochemical, textile, pharmaceutical and other sectors.
1.0.3 Pressure range
Nominal pressure PN≤2.5MPa
1.0.4 Temperature range
Gasket use temperature 0～130℃.
3 Product classification and basic parameters
3.0.1 Product classification
3.0.1.1 Polytetrafluoroethylene-rubber (PTFE/R) composite gaskets are divided into two types according to the structural type:
Type A---Ordinary type see Figure 3.0.1.1-1; Type B--Full plane type see Figure 3.0.1.1--2.4
Figure 3.0.1.1-1
Four-dance ethylene
Rubber sheet
In order to facilitate installation and positioning, a positioning ear block is required on the rubber sheet. 3.0.1.2 Pressure level
Polytetrafluoroethylene
Rubber sheetwww.bzxz.net
Figure 3.0.1.1-2
(1) The pressure level of type A gasket is divided into four types: 1.01.6, 2.5MPa and 2.0MPa.
2.0MPa gaskets are matched with GB9116.8 flanges (equivalent to the US ANSIB16.5 flanges).
1.0.1.6.2.5MPa gaskets are matched with GB9116.4~6 flanges, and can also be matched with HGJ46 pipe flanges.
(2) The pressure level of type B gasket is divided into four types: 0.6, 1.0, 1.6 and 2.0MPa. 2.0MPa gaskets are matched with GB9116.3 flanges, and 1.0.1.6MPa gaskets are matched with GB9116.1~2 flanges. In addition, 0.6 and 1.0 MPa grade gaskets are matched with HGI49 pipe flanges. 3.0.2 Codes: FRXXXXX, GB flange blank, HGJ flange code \H\
Nominal pressure (MPa)
Classification code (AB)
Nominal diameter (mm)
Gasket code
Example: FR 100B1.0
indicates polytetrafluoroethylene-rubber composite gasket, nominal diameter 100mm, full plane type, nominal pressure 1.0 MPa, used for GB flanges. 3.0.3 Structural dimensions
3.0.3.1 The dimensions of type A composite gaskets are shown in Table 3.0.3.1-1~~3. D
Nominal diameter
2.DMPaGasket dimensions for raised face steel pipe flanges mm
Nominal pressure
Gasket inner diameter
Table 3. 0. 3. 1-- 1
Outer diameter of composite layer
Outer diameter of gasket
1.0, 1.6.2.5MPa raised face steel pipe flange gasket dimensions (applicable to GB standard) t
Compound layer
Table 3.0.3.1-2
Nominal pressure MPa
Outer diameter of gasket
1.0.1.6.2.5MPa raised face steel pipe flange gasket dimensions (applicable to HGJ standard) m
Compound layer
Table 3.0.3.1-3
Nominal pressure MPa
Outer diameter of gasket
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