SPACERS FOR PIPELINES CASED CROSSINGS

Tape for plastic pipesIn case of plastic carrier pipe (PVC, PE and similar), it is suggested to tape the contactarea between the ring insulator and the carrier pipe, this precaution will avoid anyhorizontal sliding of the rings on the carrier pipe during the inserting operations.The following table resume the required quantity of tape for each insulating ringreferred to the different size of pipes.TABLE Erequired quantity of selfamalgamating tape (m)1 m = 39,37 inCARRIER PIPEDN2”4”6”8”10”12”16”20”24”30”32”36”40”42”48”requiredquantity (m)0,450,751,20,75-----------C/D/I - S/T - A/Brequiredquantity (in)1,772,954,722,95-----------requiredquantity (m)1,652,41,51,82,12,73,3--------ELEMENTSF/Grequiredquantity (in)6,59,455,917,098,2710,6312,99--------requiredquantity (m)--3,452,73,34,055,256,67,89,7510,3511,712,913,515,45M/N - P/Q - E/Hrequiredquantity (in)--13,5810,6312,9915,9420,6725,9830,7138,3940,7546,0650,7953,1560,83Please note that the above quantities concerning tape consumption are calculated considering:up to DN 6” rolls height 50 mm - for DN > 6” rolls height 100 mmHeavy-duty applicationsIn case of very long crossings >150 m or for very heavy carrier pipes it is also possibleto increase the frequency of the insulating rings, or consider the adoption of reinforcedelements. These elements are designed with an increased wear thickness.However, in case of heavy duty applications, a more careful analysis and calculation isnecessary, taking into account the particular conditions on site.For these cases we recommend to ask for Raci technical support.1,5 m1 m 1 m 1 m200 m400 m Examplewww.raci.it - info@raci.it10 Spacers for pipelines / Cased crossings