General Information
Pipe Centres
Horizontal support centres for pipe,
based on pipe carrying water
at temperatures in °C.
Underground installation is
straight forward but detailed advice
is available from our Technical
Sales Department.
| Pipe Size | PVC-U | ABS | ||||
| Inch | mm | 20°C | 50°C | 20°C | 50°C | 70°C |
| ½ | 20 | 0.9 | 0.4 | 0.9 | 0.6 | 0.5 |
| ¾ | 25 | 1.0 | 0.5 | 1.0 | 0.7 | 0.6 |
| 1 | 32 | 1.1 | 0.6 | 1.1 | 0.8 | 0.6 |
| 1¼ | 40 | 1.2 | 0.7 | 1.2 | 0.9 | 0.7 |
| 1½ | 50 | 1.3 | 0.8 | 1.2 | 0.9 | 0.7 |
| 2 | 63 | 1.4 | 0.9 | 1.4 | 1.0 | 0.8 |
| 2½ | 75 | 1.5 | 1.0 | 1.5 | 1.1 | 0.8 |
| 3 | 90 | 1.6 | 1.2 | 1.6 | 1.2 | 0.9 |
| 4 | 110 | 1.9 | 1.3 | 1.8 | 1.3 | 1.0 |
| 5 | 140 | 2.0 | 1.5 | 2.0 | 1.5 | 1.1 |
| 6 | 160 | 2.3 | 1.7 | 2.1 | 1.6 | 1.2 |
| 8 | 225 | 2.4 | 2.0 | 2.3 | 1.7 | 1.3 |
Valve or Equipment Support
Valves, heavy flanges and any ancillary equipment should be independently supported.
They can also be used as anchor
points to control expansion.
COSHH regulations available upon request
Joints Per Litre of Cement
An indication of the number of joints likely to be made per
litre of solvent cement is:
| Inch | mm | PVC-U | ABS |
| ½ - 1 | 16-32 | 300 | 400 |
| 1¼ - 2 | 40-63 | 120 | 175 |
| 3 | 75-90 | 50 | 70 |
| 4 | 110 | 30 | 45 |
| 6 | 160 | 15 | 25 |
| 8 | 200-225 | 8 | 15 |
| 10 | 250-280 | 3 | 4 |
| 12 | 315 | 3 | 4 |
The following is a list of abbreviations used in this web site:
| ABS | Acrylonitrile-Butadiene-Styrene |
| ASA | American Standards Association |
| BSP | British Standard Pipe (Thread) |
| DIN | Deutsche Industrie Normen |
| (German Industrial Standards) | |
| EPDM | Ethylene Propylene Rubber |
| FPM | Fluorine Rubber (e.g. Viton) |
| GR | Weight in grammes |
| ISO | International Standardisation Organisation |
| kg | Weight in kilogrammes |
| NBR | Nitrile Rubber |
| NP | Nominal Pressure |
| PE | Polyethylene |
| PP | Polypropylene |
| PTFE | Polytetrafluoroethylene (e.g. Teflon) |
| PVC-U | Unplasticised Polyvinyl Chloride |
| SP | Standard Pack |
| PN | Pressure Rating |
Important Note:
The technical data given in this website is for preliminary information purposes
only and is published without guarantee.
All line drawings are for illustrative purposes only and should not be regarded
as wholly accurate in every detail.
We reserve the right to withdraw or to alter the specification of any product
without notice.
Please consult our Terms of Business.
