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In the realm of industrial piping systems, flanges play a crucial role in connecting pipes, valves, and other equipment. Flange backing is a vital component in ensuring these connections are secure, leak-proof, and durable. This blog delves into the main functions and benefits of flange backing.
Flange backing can be defined as a ring of circular metal behind a flange that serves to support and reinforce it during the bolting operation. These are also known as backing rings or backup flanges and find necessary applications in high-pressure, high-vibration, and thermal expansion/contraction applications.
Distributing Bolt Load: Flange backing helps in distributing the compressive force from the bolts across the face of the flange. It does not let any distortion or damage to the flanges.
Preventing Flange Bending: The backing rings reduces the chance of the flanges bending or otherwise deflection under pressure.
Improving Gasket Seating: Proper alignment provided and deflection reduced by the gasket, hence giving a better and more effective seal with lesser leak possibilities.
Enhanced Safety: The avoidance of flange failures and leaks makes backing rings especially in industries dealing with hazardous materials.
Reduced Maintenance Costs: Leak-proof connections lessen the frequency of maintenance and repairs.
It eases installation and can compensate for slight misalignment.
Ductile Iron: With excellent strength and ductility, the ductile iron backing ring will serve a wide field of application.
Stainless Steel: It is used because of its superior corrosion resistance and thus finds perfect applications in very harsh environments when dealing with corrosive fluids.
Carbon Steel: This is an economic material for the backing ring and can be galvanized or painted to give additional corrosion resistance.
AS 4087: Dimensions for the backing rings in piping systems in Australia and New Zealand.
Table D/E: Dimensions for the rings in various flange types.
PN10/PN16: Pressure ratings applied to the ring in different piping systems in Europe
ANSI 150: the dimensions for American standard flanges
Flange backings have enormous applications in several industries such as: in oil and gas for withstanding high pressures and hazardous fluids, in water treatment and distribution for ensuring reliable water transport, in chemical processing for enduring corrosive and high-temperature environments, in power generation for supporting high-pressure steam and water systems, and in manufacturing for adding strength and stability to flange connections.
Pressure Rating: The use of a backing ring that can provide pressure at or above the rating against the flange and piping system.
Material Compatibility: The type of the chemical nature of the fluids transported and the choice of material that can stand corrosion or degradation
Flange Size and Type: Ensure dimensions in which the backing ring measures up to the correct fit in relation to the flange's size and type
Temperature: Account for any potential variations in temperature as a way of selecting such a material that will avail an appropriate thermal expansion.
Industry Standards: All the relevant industrial standards about dimensions and material specification must be followed for compatibility and safety concerns.
Qingdao Fluido Industrial Co., Ltd. is one of the leading and reputed manufacturers and exporters of the flange backing ring along with other pipe fittings owing to its high-quality products. FLUIDO, established in 1994, has gained over 20 years of experience serving its clients worldwide. It represents a diversified product series that includes a line of backing rings in several materials and sizes to fit various industrial applications. FLUIDO attaches great importance to the most stringent quality control and obtained international certifications like ISO9001 and CE, ensuring the most reliable and durable products. It sticks to customer satisfaction with competitive pricing, professional service, and one-stop sourcing solutions.
