Carburetor Rubber Diaphragms Description

Technical data sheet of FVMQ
Test Method	Norm	Test Values
Hardness	ISO 868	70 ± 5 Shore A
Specific Weight	ISO 2781	1.47
Tensile Strength at break	ISO 37	9.36 MPa
Elongation at break	ISO 37	230%
Compression Set, 22h/175°C	ISO 815	16%
Heat Ageing, 70h/200°C Hardness Change Elongation Change Tensile Strength Change Weight Change	ASTM D 573	+4 -18% -15 % - 0.9%
Immersion in Oil AMS 3021, 70h/150°C Hardness Change Tensile Strength Change Elongation Change Volume Change Compression Set	ISO 1817	-9 -39% -24% +11.2% 23.6%
Immersion in TT-S735 type III Fuel 22h/24°C Hardness Change Tensile Strength Change Elongation Change Volume Change		-13 -41% -34% +22,8%

Certification standards for carburetor rubber diaphragms

ISO 9001 is the internationally recognised standard for quality management systems, applicable to all types of manufacturers. It ensures that products meet the highest quality management and manufacturing standards.

In addition, the quality management system certification standard for the automotive industry is ISO/TS 16949, which supplements ISO 9001 and emphasizes the special requirements and standards specific to the automotive industry.

Furthermore, ASTM D2000 also sets standards for rubber materials used in various industries. A standard has been developed by the American Society for Testing and Materials to classify and specify rubber and its related products. It delineates performance requirements and technical procedures for assorted rubber materials.

SAE J200 is another standard issued by the Society of Automotive Engineers for the same purpose. It outlines the performance prerequisites and examination procedures for rubber substances that are pertinent to different automotive rubber products.

Certification requirement: Compliance with the chemical management regulations formulated by the European Union, commonly known as Reach. Carburetor rubber diaphragms containing chemical substances must comply with Reach requirements.

Introduce

Carburetor rubber diaphragms used in automotive carburetors have a thin, flexible structure, generally like a disk or saucer, with one or more significant elastic zones that allow the diaphragm to move. It deforms when exposed to negative pressure or vacuum force, allowing for fuel suction and injection.

advantage

Carburetor rubber diaphragms are crucial components in the functioning of carburetors, and they offer several advantages:

Performance Improvement: The flexible and responsive design of rubber diaphragms allows for precise control of the fuel-air mixture, especially under variable conditions.
Durability: FVMQ rubber diaphragms resist wear and tear and last longer than other materials. They can withstand exposure to fuel and oil without rapid degradation.
Control Fluid Flow: Carburetor rubber diaphragms can effectively control the flow of substances and maintain a stable state between various fluids in the system.
Compatibility: Rubber diaphragms are suitable for various carburetors, ensuring compatibility with various engines.

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