Page 84 - Commercial Catalogue 2011

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79 Commercial Catalogue
Tel: +44 (0) 1923 284151 www.tropicalmarinecentre.co.uk
SolventWeld Connections
Use a quality grade of pipe cleaner/primer and solvent cement formulated for the type of connection, with
the correct size applicator. Read and follow all of the solvent cement manufacturer's application and cure time
instructions thoroughly. Before applying cleaner and cement, appropriate safety precautions should be taken.
To avoid compatibility problems when connecting rigid pipework of differing polymers i.e ABS to PVC, we
recommend that you only use ourWet ‘R Dry Cement which is suitable for use with both materials.
How Much Solvent Cement?
Estimate the number of joints per size, then use this table to calculate how much solvent cement to
order.
Pipe Size
Joints per Litre
1 / 2
"
160
3 / 4
" - 1"
120
1
1 / 2
" - 2"
80
3"
60
4"
40
6"
24
What Brush Size?
Pipe Size BrushType
1 / 2
" - 1"
8mm round
1
1 / 2
" - 2"
25 x 10mm flat
3" - 4"
50 x 10mm flat
6" - 12"
75 x 10mm flat
Imperial to Metric Conversion
Please specify if metric conversions are required – these will be supplied with your filtration system.
The table below can be used to correctly identify the equivalent metric fittings required. It includes the
inch names for pipe products (called NPS or "nominal pipe size") and the corresponding metric
equivalents (called DN or "diameter nominal").
Pipework Support
As working temperature increases, the distance between supports is reduced.Above 60°C continuous
support is required.
Pipe Size
Supports Required per Metre
20°C
40°C
1 / 2
"
0.8
0.7
3 / 4
"
0.8
0.7
1"
0.9
0.8
1
1 / 2
"
1.1
1.0
2"
1.2
1.1
3"
1.5
1.4
4"
1.7
1.5
6"
2.1
1.9
NPS
1 / 2
3 / 4
” 1” 1
1 / 4
” 1
1 / 2
” 2”
2
1 / 2
” 3”
4”
5”
6”
DN
20mm 25mm 32mm 40mm 50mm 63mm 75mm 90mm 110mm 140mm 160mm