UNIJOINT Dismantling Joints

UNIJOINT is a company of
UNIJOINT
Dismantling Joints
Essential for straightforward
and secure installation
Source: ABB
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 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 down time.
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 e.g. where a pump
installed in a fixed position has to be connected to a pipe protruding from a wall.
2
UNIJOINT Dismantling Joints
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.
1
•The F-piece (flanged spigot), which has a flange at the other end of the dis-
5
2
4
mantling joint for connection in the other direction, is pushed into the flange
3
adaptor.
•For the installation and removal of valves with longitudinal adjustment of
maximum ± 25 mm, these two parts can be pushed against one another so
1. F-piece (Flanged spigot)
that the dismantling joint can be inserted between the pipe sections or pipe-
2. Flange adaptor
line and valve.
•When the nuts are tightened, the gasket is compressed between the follower
(end-ring) and the central ring and pressed against the pipe of the F-piece.
3. Gasket
4. Threaded tie-rod
5. Follower (End-ring)
The high-quality rubber gasket ensures that the system is always leaktight on
tightening of the nuts.
•Threaded tie-rods are used for the subsequent restraining and flange connection, depending on the type of dismantling joint used. At the same time, they
also serve to transfer the forces occurring on one side of the dismantling joint
to the other side.
UNIJOINT Dismantling Joints
3
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 offers an adjustability of ± 25 mm
during installation as well an angular deflection of 3°. The UNIJOINT flange
adaptor absorbs vibrations in the pipeline, overcomes axial offset and guarantees a permanently leaktight connection.
UNIJOINT dedicated flange adaptors are available for a variety of pipe types.
The anti-torque bolts also make the flange adaptor suitable for a fast “one-man
installation”. Refer to our installation instructions for further information.
4
UNIJOINT Dismantling Joints
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 the dismantling joint to act as a limited
expansion joint absorbing noises and vibrations in the pipeline. This variant
requires a fixed point in the pipeline. Anchoring is required if the pipe end can
be pulled out of the dismantling joint
Both versions of the UNIJOINT PAS10 are available in the pressure ratings
PN 10, PN 16, PN 25 & PN 40 and in nominal sizes of DN 50 to DN 1600, with a
standard longitudinal adjustment of ± 25 mm. Connection flanges to any standard are available upon customer request. Larger nominal sizes, higher pressure
ratings and non-standard build lengths are also available on request.
UNIJOINT Dismantling Joints
5
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 nominal sizes (see dimensions and weights table) and
larger sizes and higher pressure ratings up to 100 bar are always possible
depending on customer requirements.
6
UNIJOINT Dismantling Joints
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.
The additional flange also makes a time-saving preliminary installation of
valves possible. The valve and dismantling joint can be fitted together in the
pipeline assembly which are then fitted and clamped together (and removed
again) together with the dismantling joint. A further advantage is the continuous
threaded tie-rods on one side which makes it possible to remove the valve only.
The UNIJOINT PAS30 can be locked at the required length with adjustability of
± 25 mm when installed in pipelines. Connection flanges can also be delivered
according to different standards.
UNIJOINT Dismantling Joints
7
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 steel, with stainless
steel versions available as an option.
•Only high-quality EPDM or NBR qualities for water, drinking water and sewage are used for the gasket. These guarantee a clean seal for years, and at the
same time the movement of the dismantling joint (PAS10, 0 % tie-rods) and
the flange adaptor with the pipe.
High-quality FBE coatings protect
UNIJOINT dismantling joints from long
term corrosion.
8
UNIJOINT Dismantling Joints
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 on the requirements resulting from
the medium to be used and customer wishes.
Engineering capability & project support
UNIJOINT offers additional possibilities on top of the standard range. The
­UNIJOINT Engineering team can design products tailored to customer needs
e.g with specific face to face lengths, greater adjustability, special materials or
alternative coatings. The products can be engineered to meet working pressures
of 100 bar and beyond and to diameters in of DN 4000 or greater. ­UNIJOINT is
also able to offer project management and reporting, dedicated testing such as
Hydrostatic pressure testing or weld inspections, documentation such as test
reports, material certificates, bespoke drawings or technical reports, as well as
third party inspections.
Part of the TALIS complete solution
Dismantling joints can be combined perfectly with all the products in the wide
TALIS range such as gate valves, butterfly valves, return flow inhibitors or fittings, but can of course also be used with components from other manufacturers. Customer-specific versions are also available in addition to the many
standard variants, of course. This also applies to the dismantling joints with
larger sizes or higher pressure ratings.
UNIJOINT Dismantling Joints
9
UNIJOINT dismantling joints –
dimensions and weights
PN
DN
Nominal
length
(mm)
Adjustability
+/- (mm)
Tie-rods
(number x
diameter x
length mm)
Weight
(kg)
PN
UNIJOINT PAS10, 25 % tie-rods
10
16
50
65
80
100
125
150
200
250
300
350
400
450
500
600
700
800
900
1000
1100
1200
1400
1500
1600
50
65
80
100
125
150
200
250
300
350
400
450
500
600
700
800
900
1000
1100
1200
1400
1500
1600
180
180
200
200
200
200
220
220
220
230
230
250
260
260
260
290
290
290
300
320
325
325
350
180
180
200
200
200
200
220
230
250
260
270
270
280
300
300
320
320
325
325
325
350
390
390
20
20
20
20
20
20
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
20
20
20
20
20
20
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
2 x M16 x 280
2 x M16 x 280
2 x M16 x 310
2 x M16 x 310
2 x M16 x 310
2 x M20 x 340
4 x M20 x 340
4 x M20 x 360
4 x M20 x 360
4 x M20 x 360
4 x M24 x 370
5 x M24 x 390
5 x M24 x 390
5 x M27 x 410
6 x M27 x 410
6 x M30 x 460
7 x M30 x 460
7 x M33 x 480
8 x M33 x 480
8 x M36 x 520
9 x M39 x 540
9 x M39 x 540
10 x M45 x 585
2 x M16 x 280
2 x M16 x 280
2 x M16 x 310
2 x M16 x 310
2 x M16 x 310
2 x M20 x 340
4 x M20 x 340
4 x M24 x 370
4 x M24 x 410
4 x M24 x 410
4 x M27 x 430
5 x M27 x 430
5 x M30 x 460
5 x M33 x 480
6 x M33 x 480
6 x M36 x 520
7 x M36 x 520
7 x M39 x 550
8 x M39 x 550
8 x M45 x 575
9 x M45 x 620
9 x M52 x 675
10 x M52 x 675
8
10
13
15
18
22
32
39
45
67
81
91
103
127
160
217
241
277
310
413
548
604
738
8
10
13
15
18
22
31
43
53
78
96
111
142
189
199
262
301
374
405
515
674
847
948
20
25
20
25
25
25
25
25
25
25
2 x M16 x 310
4 x M16 x 310
4 x M16 x 330
4 x M20 x 340
4 x M24 x 370
4 x M24 x 370
6 x M24 x 370
6 x M27 x 410
8 x M27 x 410
8 x M30 x 440
9
12
13
19
26
29
42
58
78
113
UNIJOINT PAS10, 50 % tie-rods
25
10
50
65
80
100
125
150
200
250
300
350
200
200
210
220
220
230
230
250
250
270
UNIJOINT Dismantling Joints
DN
Nominal
length
(mm)
Adjustability
+/- (mm)
Tie-rods
(number x
diameter x
length mm)
Weight
(kg)
400
450
500
600
700
800
900
280
280
300
320
325
325
340
25
25
25
25
25
25
25
8 x M33 x 480
10 x M33 x 480
10 x M33 x 480
10 x M36 x 520
12 x M39 x 550
12 x M45 x 575
14 x M45 x 585
140
158
175
252
317
429
537
200
200
210
220
220
230
240
260
280
290
320
320
325
20
25
20
25
25
25
25
25
25
25
25
25
25
2 x M16 x 310
4 x M16 x 310
4 x M16 x 330
4 x M20 x 340
4 x M24 x 370
4 x M24 x 370
6 x M27 x 410
6 x M30 x 440
8 x M30 x 460
8 x M33 x 480
8 x M36 x 540
10 x M36 x 540
10 x M39 x 590
9
12
13
19
26
29
50
80
110
134
201
213
278
180
180
200
200
200
200
220
220
220
230
230
250
260
260
260
290
290
290
300
320
325
325
350
180
180
200
200
200
200
220
230
250
260
270
270
280
20
20
20
20
20
20
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
20
20
20
20
20
20
25
25
25
25
25
25
25
4 x M16 x 280
4 x M16 x 280
8 x M16 x 310
8 x M16 x 310
8 x M16 x 310
8 x M20 x 340
8 x M20 x 340
12 x M20 x 360
12 x M20 x 360
16 x M20 x 360
16 x M24 x 370
20 x M24 x 390
20 x M24 x 390
20 x M27 x 410
24 x M27 x 410
24 x M30 x 460
28 x M30 x 460
28 x M33 x 480
32 x M33 x 480
32 x M36 x 520
36 x M39 x 540
36 x M39 x 540
40 x M45 x 585
4 x M16 x 280
4 x M16 x 280
8 x M16 x 310
8 x M16 x 310
8 x M16 x 310
8 x M20 x 340
12 x M20 x 340
12 x M24 x 370
12 x M24 x 410
16 x M24 x 410
16 x M27 x 430
20 x M27 x 430
20 x M30 x 460
11
15
17
19
23
30
40
54
62
89
113
132
146
184
226
308
350
419
473
632
836
899
1248
11
15
17
19
23
30
44
63
76
107
137
163
212
UNIJOINT PAS10, 50 % tie-rods
40
50
65
80
100
125
150
200
250
300
350
400
450
500
UNIJOINT PAS20
10
16
50
65
80
100
125
150
200
250
300
350
400
450
500
600
700
800
900
1000
1100
1200
1400
1500
1600
50
65
80
100
125
150
200
250
300
350
400
450
500
PN
25
40
DN
Nominal
length
(mm)
Adjustability
+/- (mm)
Tie-rods
(number x
diameter x
length mm)
Weight
(kg)
600
700
800
900
1000
1100
1200
1400
1500
1600
50
65
80
100
125
150
200
250
300
350
400
450
500
600
700
800
900
50
65
80
100
125
150
200
250
300
350
400
450
500
300
300
320
320
325
325
325
350
390
390
200
200
210
220
220
230
230
250
250
270
280
280
300
320
340
360
380
200
200
210
220
220
230
240
260
280
290
340
340
380
25
25
25
25
25
25
25
25
25
25
20
25
20
25
25
25
25
25
25
25
25
25
25
25
25
25
25
20
25
20
25
25
25
25
25
25
25
25
25
25
20 x M33 x 480
24 x M33 x 480
24 x M36 x 520
28 x M36 x 520
28 x M39 x 550
32 x M39 x 550
32 x M45 x 575
36 x M45 x 620
36 x M52 x 675
40 x M52 x 675
4 x M16 x 310
8 x M16 x 310
8 x M16 x 330
8 x M20 x 340
8 x M24 x 370
8 x M24 x 370
12 x M24 x 370
12 x M27 x 410
16 x M27 x 410
16 x M30 x 460
16 x M33 x 480
20 x M33 x 480
20 x M33 x 480
20 x M36 x 520
24 x M39 x 550
24 x M45 x 600
28 x M45 x 640
4 x M16 x 310
8 x M16 x 310
8 x M16 x 330
8 x M20 x 340
8 x M24 x 370
8 x M24 x 370
12 x M27 x 410
12 x M30 x 440
16 x M30 x 460
16 x M33 x 480
16 x M36 x 540
20 x M36 x 540
20 x M39 x 600
288
302
399
463
600
659
908
1114
1476
1671
11
16
17
26
37
40
60
82
108
158
199
227
249
348
452
629
786
11
16
17
26
37
40
79
114
155
193
288
307
408
300
300
300
300
300
350
350
350
350
350
375
375
375
400
400
450
450
475
475
525
550
550
600
300
300
300
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
4 x M16 x 250
4 x M16 x 250
8 x M16 x 250
8 x M16 x 250
8 x M16 x 250
8 x M20 x 290
8 x M20 x 290
12 x M20 x 290
12 x M20 x 290
16 x M20 x 290
16 x M24 x 320
20 x M24 x 320
20 x M24 x 320
20 x M27 x 340
24 x M27 x 340
24 x M30 x 380
28 x M30 x 380
28 x M33 x 420
32 x M33 x 420
32 x M36 x 450
36 x M39 x 470
36 x M39 x 470
40 x M45 x 520
4 x M16 x 250
4 x M16 x 250
8 x M16 x 250
15
17
20
26
31
41
56
73
84
114
148
169
187
236
289
405
458
637
719
838
1069
1172
1557
15
17
20
PN
25
40
UNIJOINT PAS30
10
16
50
65
80
100
125
150
200
250
300
350
400
450
500
600
700
800
900
1000
1100
1200
1400
1500
1600
50
65
80
DN
Nominal
length
(mm)
Adjustability
+/- (mm)
Tie-rods
(number x
diameter x
length mm)
Weight
(kg)
100
125
150
200
250
300
350
400
450
500
600
700
800
900
1000
1100
1200
1400
50
65
80
100
125
150
200
250
300
350
400
450
500
600
700
800
900
50
65
80
100
125
150
200
250
300
350
400
450
500
300
300
350
350
375
375
425
425
425
450
475
475
525
525
550
575
600
625
325
325
325
350
375
375
375
425
425
450
500
525
525
550
600
625
625
325
325
325
350
375
375
425
450
450
500
550
550
600
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
8 x M16 x 250
8 x M16 x 250
8 x M20 x 290
12 x M20 x 290
12 x M24 x 320
12 x M24 x 320
16 x M24 x 350
16 x M27 x 350
20 x M27 x 350
20 x M30 x 380
20 x M33 x 400
24 x M33 x 400
24 x M36 x 450
28 x M36 x 450
28 x M39 x 450
32 x M39 x 450
32 x M45 x 520
36 x M45 x 520
4 x M16 x 260
8 x M16 x 260
8 x M16 x 260
8 x M20 x 290
8 x M24 x 320
8 x M24 x 320
12 x M24 x 320
12 x M27 x 350
16 x M27 x 350
16 x M30 x 380
16 x M33 x 420
20 x M33 x 420
20 x M33 x 420
20 x M36 x 450
24 x M39 x 470
24 x M45 x 500
28 x M45 x 500
4 x M16 x 260
8 x M16 x 260
8 x M16 x 260
8 x M20 x 290
8 x M24 x 320
8 x M24 x 320
12 x M27 x 350
12 x M30 x 380
16 x M30 x 380
16 x M33 x 420
16 x M36 x 450
20 x M36 x 450
20 x M39 x 490
26
31
41
56
79
97
137
168
197
279
358
370
468
546
710
790
1011
1227
15
18
21
27
35
50
74
98
130
208
265
273
327
412
546
711
873
15
18
21
27
35
50
76
105
150
276
329
341
465
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
Body
GGG-50, S235 to EN10025 and / or S275 to
EN10025
Gasket
EPDM to EN-681 (WRAS approved)
Bolts, nuts &
washers
Hot dip galvanized (stainless steel AIS316-A4
on request)
Tie-rods
Zinc electroplated or hot dip galvanized
(stainless steel AIS316-A4 on request)
Coating
Non-toxic fusion bounded epoxy (FBE)
powder, Resicoat RT9000 R4 epoxy (blue
coloured-RAL 5015), 305 microns (WRAS
approved)
UNIJOINT Dismantling Joints
11
Your Choice in Waterflow Control
Wassergewinnung
Talsperre
Wassergewinnung
Aufbereitung
Talsperre
Aufbereitung
Wassergewinnung
Talsperre
TALIS is the undisputed Number One for water transport and water flow
control. TALIS has the best solutions available in the fields of water and
Wassergewinnung
energy management as well as for industrial and communal applications.
Talsperre
Wassergewinnung
Aufbereitung
Speicher
Pumpwerk
Rohrnetze
Talsperre
Aufbereitung
Speicher
Pumpwerk
Rohrnetze
Wassergewinnung
Talsperre
Aufbereitung
Speicher
Pumpwerk
Bewässerung
Industrie
Rückgewinnung
Rohrnetze
Bewässerung
Industrie
Rückgewinnung
Pumpwerk
Rohrnetze
Bewässerung
Industrie
We have numerous products for comprehensive solutions for the whole
water cycle – from hydrants, butterfly valves and knife gate valves through
Speicher
to needle valves. Our experience, innovative technology, global expertise
Pumpwerk
Rohrnetze
Speicher
Pumpwerk
Speicher
and individual consultation processes form the basis for developing longterm solutions for the efficient treatment of the vitally important resource
“water”.
Bewässerung
Industrie
Bewässerung
Rückgewinnung
Kraftwerk
Industrie
Rückgewinnung
Kraftwerk
Klärwerk
Gas
Bewässerung
Industrie
Rückgewinnung
Klärwerk
Kraftwerk
Klärwerk
Gas
TALIS Benelux
Kraftwerk
Klärwerk
Kraftwerk
UNIJOINT
Gas
Klärwerk
Gas
Rozenobel 15
Kraftwerk
Klärwerk
Gas
5986 PA BERINGE, The Netherlands
Phone: +31 (0)77-3078200
Fax: +31 (0)77-3078180
www.talis-benelux.com
Note: Specifications may be changed without notification at any time.
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