UNIJOINT Dismantling Joints

Essential for straightforward and secure installation 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 to set to the exact length required prior to being securely connected to flanges. The reverse...

Dismantling joints are essential for the installation of valves in pipelines or in system installations The design principle Even if there are numerous versions of dismantling joints available for different applications, the basic principle is always the same: • The flange adaptor is located on one side of the dismantling joint. It is connected securely to the pipe or valve via the flange. Flange bore holes corresponding to the respective pressure rating or standard are available. • The F-piece (flanged spigot), which has a flange at the other end of the dis- mantling joint for connection in...

UNIJOINT flange adaptors – the straightforward solution The UNIJOINT flange adaptor is the most basic type of dismantling joint. On one side, it has a flange connection in accordance with the required flange standard, on the other an insertion socket for the pipe. A variety of standard pipe types can be connected. Since the UNIJOINT flange adaptor does not offer end load restraint, it requires a fixed point in the pipeline. If the pipe end can be pulled out of the flange adaptor, anchoring is required. The UNIJOINT flange adaptor has an expansion and contraction of ± 2.5 mm for the gasket, and...

UNIJOINT PAS10 – the logical choice The UNIJOINT PAS10 is equipped with two flanges and one follower end-ring. This design offers optimal gasket control with the separate stud bolts applying pressure to the gasket independently of the tie-rods making the flange connections. This allows a reduction in the number of tie-rods required as their function is restraining only. The UNIJOINT PAS10 comes equipped with 25 % tie-rods for PN 10 and PN 16 and 50 % tie-rods for PN 25 and PN 40 applications. The UNIJOINT PAS10 also makes an unrestrained set-up possible. Here no threaded tie-rods are used allowing...

UNIJOINT PAS20 – the classic all-rounder Equipped with three flanges, the UNIJOINT PAS20 is the perfect solution for all standard and non-standard applications. It is easy to install and remove thanks to the standard longitudinal adjustability of ± 25 mm and thus offers perfect support during the installation and removal of valves. The UNIJOINT PAS20 has connection flanges with the same dimensions at both ends and is lockable. The UNIJOINT PAS20 dismantling joint with 100 % continuous threaded tie-rods ensures complete restraint and a leakfree operation. The UNIJOINT PAS20 is available in standard...

UNIJOINT PAS30 – the problem solver The UNIJOINT PAS30 with four flanges and 100 % tie-rods is the ultimate solution for challenging installations. The additional flange results in an increased construction length which makes it possible to slide the threaded tie-rod between end flanges during installation and removal. The UNIJOINT PAS30 is also suitable in situations where the overall space only just corresponds to the construction length. This allows sideways insertion making the UNIJOINT PAS30 ideal for cases where the connection flanges are fixed e.g. where pipes protrude out of the wall....

Perfect technology thanks to top-quality materials All variants correspond to the world leading AWWA C219 standard, and are manufactured in Europe using top material qualities in a precise process. • Specially developed expanders are used for steel production, where the rings are expanded outwards evenly under heavy pressure. This guarantees an absolutely “round” product with minimum tolerances to satisfy hydrostatic pressure testing according to AWWA C219. • The threaded tie-rods, washers and nuts – key for the strength of the connection – are made of zinc electoplated or hot-dip galvanised...

An expander guarantees an absolutely “round” product , the surface of which is protected by a high quality FBE coating. Subsequent steps are assembly and quality control. • The surfaces of all metal parts apart from the threaded tie-rods, washers and nuts are safely protected from corrosion by a fusion bonded epoxy (FBE) coating with a dry film thickness of 305 µm. Further coatings are available as options, e.g. Rilsan EPC, enamel, liquid varnishes (suitable for drinking water) or other special outer coatings. Inner rubber coatings such as ebonite are also available. The choice of coating depends...

UNIJOINT dismantling joints – dimensions and weights Tie-rods (number x diameter x length mm) UNIJOINT Dismantling Joints Tie-rods (number x diameter x length mm)

Tie-rods (number x diameter x length mm) Tie-rods (number x diameter x length mm) Additional nominal sizes or pressure ratings on request Standard materials & relevant norms Flange norm / drilling ISO2531 / EN1092 raised face – reduced bore (RF-RB), other norms / drillings, e.g. ANSI Class on request EPDM to EN-681 (WRAS approved) Bolts, nuts & washers Hot dip galvanized (stainless steel AIS316-A4 on request) Zinc electroplated or hot dip galvanized (stainless steel AIS316-A4 on request) Non-toxic fusion bounded epoxy (FBE) powder, Resicoat RT9000 R4 epoxy (blue coloured-RAL 5015), 305 microns...

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