Welding Rules of PPR Pipe Systems According to DVS 2207

• Welding of PPR pipe systems should be performed according to DVS rules and with the right equipment. 

• Equip the welding machine with suitable size and do not use tools with worn teflon coverage. 

• The welding machine should be turned on and reach the appropriate temperature [260 ±10 °C]. 

• Products prepared for welding should be cleaned. Products must be dust-free, oil-free and dry. 

• The products to be welded are placed on the welding socket perpendicular to the axis and advanced to the appropriate size. 

During this process, the products should not be turned. 

• When processing time is completed the products should be quickly removed without turning. 

• After the products are fully combined, the cooling times given in the table below must be followed. During this process, the products should not be turned. 

• The periods given in the table below should be followed during welding process. The process values vary according to the diameters of the products. 

• After the application, before the installation is closed with plaster, it is recommended to perform a 24-hours leak test at 1,5 times the system pressure. 

• DO NOT USE FLAX. 

• It is recommended to use Teflon tape or liquid gasket. 

• In the assembly of threaded products, excessive tightening should be avoided.