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PVC Pressure expansion repair coupling. These are used the repair pipe is tight situations. The damage pipe is cut out and the body of this fitting is cemented in place, the other end is slid out from the body and cemented to the other end of pipe. The screw-grip of the body is tightened, and the seal is complete. It also acts as an expansion fitting.
Pressure PVC pipes and fittings are made from PVC-U. The pipe is rigid and comes in 6mt lengths.
The pipe is joined with it's mating fitting using solvent cement. See installation guide for PVC-U. The jointing system in known as solvent cement joints(SCJ).
The joints do require a setting time of 24 hours before pressurized.
Applications are:- Pumped sewerage and effluent pipelines, Potable water, Irrigation and turf watering, Slurry transport, Pressure sewerage, Water supply, Recycled water.
This system is not used in domestic housing, but can be used for above ground and underground.
The fittings can be used for gas, but special yellow pipe is required.
A comprehensive range of pressure fittings is available to complete the system, from 15mm - 150mm. Some larger fittings are available on request.
The fittings are white or off-white.
Pressure rating on fittings are PN18 (1800 kpa) and the pipe is available from PN4.5 (450 kpa for low pressure applications) to PN18.
Typically temperature ranging between 0 Â° to 50 Â°C. There are special consideration for application outside this range.
Fittings and pipes are manufactured in accordance with AS/NZS 1477 Ã¢â‚¬â€œ PVC pipes and fittings for pressure applications.
They also comply with AS/NZS 4020 Ã¢â‚¬â€œ Testing of products for use in contact with drinking water and meet all Watermark requirements.