Buderus Manual on Trenchless Installation of Ductile Cast ... - Duktus
Buderus Manual on Trenchless Installation of Ductile Cast ... - Duktus
Buderus Manual on Trenchless Installation of Ductile Cast ... - Duktus
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Installati<strong>on</strong> instructi<strong>on</strong>s<br />
11.3 Installati<strong>on</strong> instructi<strong>on</strong>s for ductile cast ir<strong>on</strong> pipes with cement mortar coatings<br />
(ZMU)<br />
Applicability<br />
These installati<strong>on</strong> instructi<strong>on</strong>s apply to the<br />
installati<strong>on</strong> <strong>of</strong> ductile cast ir<strong>on</strong> pipes to<br />
DIN EN with cement mortar coatings<br />
(ZMU) to DIN 1 2.<br />
To make the joints, the installati<strong>on</strong> instructi<strong>on</strong>s<br />
which apply in the respective cases<br />
should be followed.<br />
What also apply are the guidelines given in DIN EN 80 and DVGW Arbeitsblatt<br />
GW 00-2 (for water pipelines) or DIN EN 10 and ATV-DVWK A 138 (for waste water<br />
pipelines).<br />
Installati<strong>on</strong><br />
Installati<strong>on</strong> must be carried out in such a way that the ZMU is not damaged.<br />
The following opti<strong>on</strong>s are available for protecting the restrained joints<br />
• a cement mortar protecting sleeve<br />
• shrink-<strong>on</strong> material or protective tapes (to DIN 30 72),<br />
• a mortar bandage (e.g. as produced by Messrs. Ergelit) for special applicati<strong>on</strong>s.<br />
Cement mortar protecting sleeves<br />
Cement mortar protecting sleeves can be used <strong>on</strong> TYTON ® and BRS ® restrained joints<br />
up to DN 700 and <strong>on</strong> BLS ® restrained joints up to DN 00.<br />
Before the joint is assembled, the sleeve is rolled <strong>on</strong> and, with the larger diameter leading,<br />
is pulled <strong>on</strong>to the inserting end sufficiently far for the ZMU to project by approx.<br />
100 millimetres.<br />
Fitting can be simplified by applying lubricant to the ZMU.<br />
Once the joint has been assembled and the seating <strong>of</strong> the gasket checked with the tracer,<br />
the sleeve is folded over, pulled to the end-face <strong>of</strong> the socket and rolled over the socket.<br />
It then rests firmly and closely in place.<br />
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