Page 4 - VESBO PPR PRODUCT DATA SHEET

2.11 Standard Compliance
2.9 Physical and Chemical Properties of Product
ISO 15874-1 Plastic piping systems for hot and cold water installations - Polypropylene (PP)
3
 Density at 23°C: 0,9 g/cm (ISO 1183)
-1
-1
 Exp. Coefficient – PPR Monolayer: 150.10 m.m . K (DIN 53752) ISO 15874-2 Plastic piping systems for hot and cold water installations - Polypropylene (PP) - Part 2: Pipes
-6
-1
-1
-6
 Exp. Coefficient – PPR Faser: 40.10 m.m . K (DIN 53752) ISO 15874-3 Plastic piping systems for hot and cold water installations - Polypropylene (PP) - Part 3:
Fittings
 Exp. Coefficient – PPR Stabi: 25.10 m.m . K (DIN 53752)
-1
-6
-1
DIN 8077 Polypropylene (PP) pipes - PP-H, PP-B, PP-R, PP-RCT - Dimensions
-1
-1
 Thermal Conductivity - PPR Monolayer: 0.24 W. m . K (DIN 52612)
Polypropylene (PP) pipes - PP-H, PP-B, PP-R, PP-RCT - General Quality Requirements and
DIN 8078
 Thermal Conductivity - PPR Faser: 0.18 W. m . K (DIN 52612) Testing
-1
-1
DIN 16962 Pipe Joints and Elements for Polypropylene Pressure Pipes
2.10 Quality Assurance DIN 16928 Pipe Joints, Elements for Pipes, Laying - General Conditions
2.10.1 Raw Material Control DIN 1988 Drinking Water Supply Systems, Materials, Components, Appliances, Design and Installation
DIN 2999 Threads for Pipes and Fittings
Testing the incoming resin is the first step in the quality control program. DVGW W 542 Composite Pipes for Drinking Water Installations - Quality Requirements and Testing
Resins are checked for contamination, melt flow rate (MFI), DSC, OIT and
density. This ensures that incoming materials conform to specified DVGW W 270 Reproduction of Microorganisms on Materials for Drinking Water Applications
requirements according to EN, ISO, DIN and ASTM standard. KTW Requirements Plastics Used for Drinking Water
DVS 2207 Welding of Thermoplastic Materials

DVS 2208 Machines and Instruments for Welding of Thermoplastic Materials
2.10.2 Process Control
The quality control standards require inspections to be carried out on all 2.12 Usage of Pipe Clamps
finished products and tests to be performed on samples from every
production batch. All results recorded in our systems are used for product Used in combination with hot water PP-R pipes, pipe clamps may cause
development and optimization of the manufacturing process. Finished external stress especially if they are not dimensioned for the Outside
products are only accepted if all tests and inspections conform to the Diameter (OD) of the PP-R pipes and if they do not allow pipes to expand
prescribed procedures and specifications. or contract.

PP-R pipes expand linearly and radially while hot water is running through
it. Hence proper pipe clamps should be used to allow free movement of
2.10.3 Finished Product Control pipes due to expansion and contraction. This is to prevent excessive
external loading-due mechanical stress especially for hot potable water and
In the end of production, label, packaging, writing type, import-export and heating systems.
shipping control are examined. Finished products are only released to
stock when all tests and inspections pass to the prescribed procedures
and specifications.
2.13 Pressure Test for VESBO PP-R Piping System

It is necessary to subject VESBO PP-R piping systems to pressure a test
after a completed installation. VESBO PP-R piping systems, unlike metal
ones but similar to all other plastic ones, need to follow a specific pressure
test procedure owing to mechanical properties of expansion when
subjected to pressure temperature differences and coefficient of expansion.

A change of 10°C in temperature, corresponds to a pressure change of 0.5
- 1.0 bar. Thus, the test medium shall as far as possible be kept at a
constant temperature throughout the test. The test is to be conducted
according to DIN 1988 Part 2 or BS 6700.

www.vesbo.com