Product Features
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Double flanged fitting, which allows longitudinal adjustment in flanged pipe systems
Easy assembly and disassembly of flanged connections
Continuous threaded bars, therefore, no additional mounting screws necessary
Length adjustment range: (see table) +/- 25 mm
Flange in accordance with and drilled to EN -2 | PN 10, PN 16, PN 25 (PN 40 on request)
Larger dimensions or pressure rating of PN 40 on request.
About Dismantling Joints
It can be challenging to insert components like valves into piping sections without longitudinal adjustments. Dismantling joints are piping components that allow for linear variations during the installation and the removal of pipe sections or valves.
Dismantling joints are crucial when installing or removing valves, pumps, and pipe sections. The vital areas of application are:
Industrial pipelines,
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Pumping stations,
Water treatment plants,
Water meter chambers,
Hydropower plants.
Dismantling joints come in two types: rigid or thrust and non-rigid or non-thrust, with the core difference being the number of anchor bolts.
The thrust type Hawle dismantling joint has more continuous threaded bolts, as the non-rigid version. By design, the thrust type can take on the axial forces of a pipeline, unlike the non-thrust type. The continuous threaded anchor bolts of the rigid type connect all three flanges, eliminating the need for additional screws. On the other hand, the non-rigid type has separate anchor bolts for the sealing flange.
The primary material for the Hawle ductile iron dismantling joints is epoxy powder coated ductile iron. Also, the pressure ratings of Hawle dismantling joints vary from PN 10 to PN 25, and come in dimensions up to DN . Upon request, we can manufacture larger dimensions or pressure rating of PN 40.
The Dismantling Joints are double flanged fittings that accommodate up to 100mm (4') longitudinal adjustment and can be locked at the required length with the tie bars supplied. Not only does this system allow for fast, easy maintenance of valves, pumps or meters, it simplifies future pipe work modifications and reduces downtime when changes need to be made.
The installation is also straightforward using just a spanner and torque wrench to tighten the high tensile steel or stainless steel tie bars. With fewer tie bars than flange holes and the tie bars acting as flange jointing bolts theprocess is speeded up but still offers a secure, rigid, fully endload resistant system with a pressure rating equal to that of the flange.
A comprehensive range is available from DN40 (1½') to DN (80') with virtually any flange drilling or pressure rating supplied, although larger sizes and custom made Dismantling Joints can be designed and built on request.
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