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Plumbing is the system of pipes and drains installed in a building for the distribution of potable drinking water and the removal of waterborne wastes, and the skilled trade of working with pipes, tubing and plumbing fixtures in such systems.
A plumber is someone who installs or repairs piping systems, plumbing fixtures and equipment such as water heaters. The plumbing industry is a basic and substantial part of every developed economy due to the need for clean water, and proper collection and transport of wastes.
What is PPR : PPR is a thermoplastic polyolefin which is easy to process into pipes & fittings with superior chemical & physical properties.
Why we need PPR : They are Best carriers of potable water (both Hot or cold) in domestic as well as in industrial application in terms of quality and price.
When we need PPR: When long- term performance under adverse conditions without deviations in standards is required.
Where we need PPR : Areas of Plumbing/Water tight systems/corrosion resistance/No encrustation tendency/Noise dampening plastic material/Long term pressure resistance applications.
Advantages of PPR Pipes :
Resistance to abrasion and corrosion
No corrosion by acid and alkaline fluids with pH values between 1 and 14
High chemical resistance
Excellent ESCR – Longer life
High abrasion resistance => high flow velocities possible
High internal pressure resistance
Minimum 50 years life time at 60 or 70°C and 10 bar maximum pressure
No negative influence on water quality
Compliance with the international standards on the use of plastic materials for the transportation of drinking water.
Prevents UV passage – prevents growth of bacteria & algae
Very smooth surface of pipes and fittings
No lime stone or other deposits
Head loss / pressure drop reduced to a minimum
Welding capacity
100% homogeneous connections, guaranteeing leak-tight, long lasting system
fast and easy installation
Threaded insert fittings
Watertight assemblies with other metal elements in the installation
Silence / sound absorption
Considerable noise reduction in comparison to metal
Low specific weight
Easy transport and handling
Lowest density as compared to conventional metal pipes
Energy saving
Low heat conductivity of PP-R leads to 10-20% energy saving
Reduced Condensation
Low heat conductivity reduces the condensation of water on the outer surface of cold water pipes
Resistance to stray currents
PPR has a low electrical conductivity perforation phenomena caused by stray currents are unknown
Fitness for use in seismic areas
Flexibility and toughness of the PP-R pipes allow their use also in seismic areas
Applications of PPR Pipes :
Hot and cold water supplying pipes
Sanitary lines
Water lines
Water purifying plants
Lines for conveying liquid food products
Industrial systems like : conveying air pressure, aggressive fluids like acids, alkaline solutions
Pipes for Agriculture use.
Radiator heating pipes.
Under floor heating pipes
Precautions of PPR Pipes :
Transport & Handling
The products should be handled with normal care. Pipes and fittings with imperfections should not be installed.
Exposure to UV Rays
It is recommended neither to store nor to install the product in places which are directly exposed to UV rays.
Bending
Large bends can be obtained by cold forming. If the bend radius is shorter than 8 times the dia of the pipe, it is recommended to heat up the part concerned by means of a hot air blower.
Threaded Joints
To ensure tightness, Teflon or similar products can be used.
Thermal Expansion
The thermal expansion of plastics is higher than that of metals, hence the length expansion compensation should be considered.
Welding
Only chemically similar materials are supposed to be welded. Thus Polyethylene and polypropylene should not be welded. For the same material, the products to be welded should have approximately the same fusion index.
Support
The PP-R pipes are not self-contained so it is necessary to support them at specific distances.
Pipe Cutting
Cuttings should be carried out using tools which ensure a clean cut free from burrs and perpendicular to the axis.
Low temperatures
At temperatures below 0 deg C, following precautions should be taken :
Pay attention when cutting the pipe,
Check the cut made,
Avoid impact and excessive strains,
Not to make elbows with vary narrow radius.
In presence of cold draughts, welding must be carried out in protected areas, to avoid a quick cooling of the surfaces to be welded.
