Land drain, often known as French Drain, is the name given to flexible coiled pipes which are laid underground to alleviate excess surface water. They are corrugated and come in either perforated or unperforated lengths.Land drain coils are available from JDP in sizes varying from 60mm-160mm in 25m, 50m or 100m lengths.

In this chapter, only the basic types of vents and the locations where they are used have been covered; however, there are many forms of ventilation that can be applied to a plumbing installation. The types of vents used on a project are determined largely by the manner in which the plumbing fixtures are to be installed and where they are located.Pipes carrying waste should be graded downward to ensure complete drainage. Horizontal vents should be slightly pitched to facilitate drainage of condensation. As plumbers know, the subject of vents is the science of plumbing. Anyone can try to install piping for a plumbing system; however, if the system cannot carry waste away, the would-be plumber and the system are useless. For more information on venting, consult the National Standard Plumbing Code-Illustrated.

Land drainage Y junction for joining 60, 80 & 100mm (adjustable) and 60, 80 & 100mm (adjustable) single wall pipe/land drainage coil.

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