Product characteristics:
■No leakage: Permanent sealing via weldingconnection
■High water flow: Smooth inner wall brings 30%higher water flow than that of galvanized pipes
■Sanitary and nontoxic: Applicable water pipes fordrinking water and purified water
■Corrosion-resistant: No rusting or scaling
Scope of use:
■Cold/hot water system in civil and industrialbuildings
■Hot water circulation heating system
■Pipeline of drinking water and purified water
■Industrial fluid delivery system
■Compressed air pipeline system
■Agricultural and park pipeline system
Installation technology:
■Do not start welding connection until foreignmatters (if any) on pipe & fittings are removed
completely
■Push pipe & fittings into welder mold andstart heating within the specified period.
■Please be noted, the pipe & fittings may bethinned, deformed and have water leakage if being heated excessively
■Push in the heated pipe & fittings atvertical direction, hold for 4 s and behave gently to avoid pipe bending
Installation operation precautions:
■With lower hardness and rigidity than metalpipes, the PP-R pipes should be well protected in handling and constructionagainst mechanical damages due to improper force. The concealed pipe positionshould be marked to avoid damages in secondary decoration.
■With certain low-temperature brittleness below 5℃, the PP-R pipes should be handled with much carein winter and slowly cut using a sharp tool. Do not press or knock the pipesinstalled, but provide covering protection to pipes bearing external force.
■If installed outdoors or under direct sunlight,the PP-R pipes must be wrapped with protective layer in dark color to avoiddegradation and aging in long-term ultraviolet irradiation
■The PP-R pipes should be fully connected viamelting to keep pipes integrated and free from leakage
points, except thatmetal pipes or water consuming appliances should be connected mechanicallythrough threaded inserts or flanges.
■With high coefficient of linear expansion, the PP-Rpipes must be technically protected against
expansion or deformation in openinstallation or indirect burying and concealed wiring.
■Do not seal (direct burying) and cover decorationlayer (indirect burying and concealed wiring) on the installed pipes until pressuretest is made for pipes at a pressure which is 1.5 times that of system for coldwater pipe and not less than 1 MPa, or at the pressure which is 2.0 times thatof system for hot water pipes and not below 1.5 MPa. The period and method ofpressure test are specified in technical regulations
■The PP-R pipes must be installed with support andhanger in open installation or indirect concealed wiring.
Installation procedure of PP-R pipe
