Dismantling Joints

GENERAL

Dismantling Joints play a decisive role in the design and layout of pipelines and valves. They are an essential aid during the installation and removal of pipe sections and valves. Without a dismantling joint offering longitudinal adjustment, it is almost impossible to insert a valve exactly into a pipe section.

Thanks to this adjustability of the dismantling joint, the valve can be fitted next to the dismantling joint, and the dismantling joint can be set to the exact length required prior to being securely connected to flanges.

The reverse sequence is used for dismantling, where readjustment of the length of the dismantling joint creates enough space to loosen and remove the valve. In both cases, the dismantling joint guarantees fast installation and removal, thus contributing to increased efficiency and reducing site operations and downtime.

The procedure is similar where pipe sections have to be fitted together. Certain types of dismantling joints are also suitable for use without restraint in flexible pipelines. Finally, dismantling joints can be used to fill gaps, for example where a pump installed in a fixed position has to be connected to a pipe protruding from a wall.

OBJECTIVES

• To facilitate easy installation and removal of valves and pipe sections
• To provide longitudinal adjustment for accurate alignment of pipeline components
• To reduce installation time, site effort, and operational downtime
• To ensure flexibility in pipeline assembly, especially in constrained or fixed installations
• To accommodate gaps between fixed equipment (such as pumps) and connecting pipelines
• To improve overall efficiency and reliability of pipeline systems

METHODOLOGY / WORKING PRINCIPLE

• The dismantling joint is installed between pipeline flanges along with the valve or pipe section
• It provides axial (longitudinal) adjustment by allowing controlled extension or contraction

During installation:

• The joint is adjusted to create sufficient space for inserting the valve or pipe section
• Once positioned, the dismantling joint is set to the required length and securely bolted

During dismantling:

• The joint is readjusted (contracted) to create clearance
• This allows easy removal of valves or pipe sections without disturbing adjacent pipeline components
• The same principle is applied when assembling or disassembling pipe sections
• In specific applications, dismantling joints can also be used in flexible pipelines without restraint

MOC

Carbon Steel

Stainless Steel