Dismantling Joints, Cast Iron, Cast/Stainless Steel, 2–48 IN

Product Name: Dismantling Joint, Expansion Joints in Piping
Type: SSQ, CS Type, SSQP, SSQI, SSQ-1, SSQ-2, SSQ-3
Material: Cast Iron, Cast Steel, Stainless Steel
Size Range: 2–48 Inch (DN50–DN1200)
Pressure Rating: Class 150 LB, PN10, PN16
Flange Standard: ASME B16.5, AS 2129 Table D/Table E

Expansion joints, also known as compensators or flexible connectors, are devices used to absorb movement in piping systems, including those in pumps, valves, and pipelines. These joints allow for displacement, easy installation, and can withstand axial pressure, making them highly effective for connecting various equipment. Expansion joints are particularly useful for managing the expansion and contraction caused by temperature changes in long pipelines, providing significant convenience for the installation and replacement of water supply and drainage systems, water towers, pumps, water meters, and valves.

Main Parts of the Product

Expansion joints are composed of several key components, including the main body, sealing rings, glands, and expansion short pipes. The design of these joints has been improved by adding a limit device, which restricts the maximum expansion with double nuts. This allows the pipeline to expand freely within the allowable range. Once the maximum expansion is reached, the joint will hit the limit position, ensuring safe operation. Expansion joints are particularly suited for connecting pipelines that experience vibration, have slopes, or feature bends.

Product Types

Expansion joints come in various types, including:

• SSQ Cast Iron Expansion Joints
• CS Type Thermal Pipeline Expansion Joints
• SF Steel Expansion Joints
• SSQP Flange Pressure Plate Limit Expansion Joints
• SSQI Flange Expansion Joints
• SSQ-1 Casing Expansion Joints
• SSQ-2 Casing Expansion Joints
• SSQ-3 Casing Expansion Joints
• Steel Expansion Joints
• Pipeline Expansion Joints

Main Materials of the Product

The materials used for expansion joints are generally divided into three types:

• Cast Iron (HT)
• Stainless Steel
• Steel (SF)

The joints are designed to handle different work pressures, including PN5, PN10 and PN16, with the flange connection standards following GB 4216.3-4216.5.