1.3 Materials
Conex Compression fittings are available in yellow brass,
dezincification resistant brass and red brass (gunmetal).
Components in contact with water are manufactured
from low lead materials complying with the European
requirements for materials in contact with drinking water.
Low lead specification
• Standard material: EN 12165, CW 617N-DW
• DZR material: EN 12165, CW 511L
• Red brass (gunmetal): EN 1982, CC 499K
These materials meet the requirements of the 'UBA/4MS
list of hygienically suitable materials for drinking water',
and are ideal for all types of drinking water systems
without restriction.
1.4 Threaded connections
Conex Compression fittings are available with male and
female threaded connections. These threaded ends
incorporate a hexagon or octagon nut for tightening the
joint. They are manufactured to the following standards:
1.6 Storage and handling
It is advisable to leave the fittings in the packaging to
protect the fitting prior to installation. Please store in a
cool dry place to protect the fittings from contamination,
damage and dirt.
Cone face connectors to EN 1254-2 (BS 864: Part 2) rely
on a metal to metal seal and care should be taken to avoid
damage prior to assembly.
1.7 COSHH (Control of substances hazardous
to health)
It is the responsibility of the end user to ensure that
adequate protection is available where required and the
necessary information regarding possible health and
safety regulations is adhered to. Copper and copper
alloy fittings are considered non-hazardous under normal
circumstances.
1.8 Finish availability
Apart from the natural brass finish, Conex Compression
fittings are also available in nickel or chrome plated finish
in accordance with EN 248.
Note: It is recommended that you contact our customer
service team for availability of any of our Conex
Compression fittings in the plated versions.
1.9 Conversion data for connecting metric fittings to imperial tube to BS 659
Table 2:
Conversion table
Metric
size (mm)
Imperial
size (")
Method of adaptation
12
3/8
Compatible – no adaptor required
15
1/2
Compatible – no adaptor required
22
3/4
Exchange existing 22 mm 65 compression ring for a 3/4" 65 compression ring (04-1020065--)
28
1
Exchange existing 28 mm 65 compression ring for a 1" 65 compression ring (05-1020065--)
35
1-1/4
Exchange existing 35 mm 65 compression ring for a 1-1/4" 65 compression ring (06-1020065--)
42
1-1/2
Exchange existing 42 mm 65 compression ring for a 42 x 1-1/2" S68S adaptor ring ( K071020068S-)
54
2
Compatible – no adaptor required
67
2-1/2
Compatible – no adaptor required
76.1
3
No adaptation possible a 76 x 3" 301IM coupler (R302020301IM) must be used.
108
4
Exchange existing 108 mm 65 compression ring for a 108 x 4" S68S adaptor ring (S405020068S-)
2.0 Applications
Table 3:
Applications
Flow medium
Tube type
Copper
Stainless
steel
Carbon
steel
PB
PE-X
Drinking water applications EN 806
Drinking water
√
√
x
√
√
Sealed heating systems to EN12828
Heating water
√
√
√
√
√
Open vented heating systems
Heating systems
√
√
x
√
√
Solar thermal systems
EN 12975 / 12976
Water and water-glycol mixtures
mixing ratio max. 50/50%
√
x
x
x
x
Chilled water *
Water and water-glycol mixtures.
mixing ratio max. 50/50%
√
√
x
x
x
Rainwater harvesting systems
Rainwater from cisterns
√
√
x
√
√
'Wet' fire extinguishing tube
systems 14462
Firefighting water
√
√
√
x
x
Compressed air
Compressed air of all classes
according to ISO 8573-1
√
√
√
x
x
Industrial and
processing water
Reclaimed water
6.5 ≤ Ph 6.5 ≤ 9.5
√
√
√
x
x
Natural gas installations EN 1775
up to 28 mm**
Combustion gases
√
x
x
x
x
Liquefied petroleum gas installations
up to 28 mm***
Combustion gases
√
x
x
x
x
Fuel oil supply systems
Heating oil EL
√
x
x
x
x
•
•
•
2
•
•
Female threads to ISO 228 parallel.
Male threads are either ISO 228 parallel or ISO 7 taper
and EN10226..
ISO 228 parallel threads require a sealing washer to
affect the seal on the mating faces of the joint. Please
note: these must not be used in gas installations.
ISO 7 taper and EN10226 threads are sealed on the
thread form with appropriate sealing material. Suitable
for gas applications up to 1".
The use of HEMP is not permitted.
3
1.5 Tube compatibility
Conex Compression connectors can be combined with:
• Copper tubes in accordance with EN 1057 up to
108 mm in R220 (liner required), R250 and R290 temper
condition.
• Stainless steel tubes up to 28 mm in accordance with
EN 10312, series 1 or 2.
• Carbon steel tubes up to 28 mm in accordance with
EN 10305.
• Polybutylene (PB) to BS 7291 part 2 & EN 15876
up to 28 mm (liner required).
• PE-X pipe to BS 7291 part 3 and EN 15875 up to 28 mm
(liner required).
For more details please see section 6.0 Operating
Parameters.
* Please refer to the stress corrosion cracking, section 1.5.
** Up to 28 mm only.
*** Technology can only be surface mounted for this application.
For plastics, PE-X and PB pipes, please refer to the pipe manufacturer for applications and service conditions.
