TECHNICAL MANUAL - Sharq.biz

emovable systemThe removable system includes all connections with stub end and backingflange, kit antifluage as well as compression fittings (quick release joints).These systems allow to connect different materials (PE, PVC, steel or cast-iron)and also the connection to special products such as valves.stub end and backing flangeThe jointing with stub end, backing flange and gasketis normally used to connect polyethylene pipes withothers of different material, or to access to valvesand branches. It can also be chosen for a temporarilyjointing of two PE pipelines.The stub end must be welded to the PE pipe (indifferentlyusing buttfusion system or with electrofusion) andforms the support base for the flange, normally madeof steel or aluminium. The connection is made by bolts,while the tightness is guaranteed using a flat gasket,placed between the two elements. Its composition issuitable for the carried fluid.kit antifluageThis jointing system similar to the above-mentionedone, is made of a PE stub end and a polypropyleneflange charged with fiber glass; the special designavoids the deformation of the counter-flange andguarantees the joint tightness in the long period.compression fittingThis is also called “quick release joint” or “clamp joint”for its constructive characteristic which consists ofa main body screwed with two bushes. Tightness isguaranteed by the elastomeric gasket compressed bythe mechanical elements.This type of fitting is generally used in low pressurepipeline systems since overpressure or hammering cancompromise the tightness, as well as the ovalization ofthe pipe.18