Q: How can we repair the pipe if there is a hole on it?

A: If it is a nail or a drill hole (10.5 mm deep max) you may use "VESBO Repair Kit" to repair the hole on the pipe. Please contact to our Technical Department for more/detailed information or visit our web-site link

Q: What is the expansion for the hot water applications?

A: Under a temperature of 50°C, 1 m. of PN 20 pipe elongates 4.5 mm. This value is 0.9 mm for 1 m. of PN 25 Al foiled pipe for 50°C. You can contact to our Technical Department for detailed calculations or visit our web-site link

Q: What is the service life (life span) of VESBO piping system for different pressure groups?

A: PP-R pipes have a service life of 50 years according to DIN Standards for in house applications. To have detailed information for different temperatures and pressure rates, please contact to our Technical Department.

Q: Are VESBO pipes used for drinking water? Are they hygienic /healthy?

A: PP-R products can safely be used for drinking water. VESBO PP-R products have got all International Approvals (i.e. SKZ, DVGW, Hygiene Institute,etc.) as well as the approvals of the sales territories.

Q: Are VESBO pipes UV resistant?

A: Normal VESBO products are produced with UV stabilisers. However, like all other piping systems including metals, pipe works should not be left exposed under direct sun light without insulating or protection from direct sunlight or UV radiation. UV resistant products are also manufactured in our plants, please contact our sales department for details.

Q: Does VESBO piping system burn?

A: VESBO pipes and fittings comply and are classified under the requirements of the fire classification, B2 (Normally inflammable) according to DIN 4102. In case of a fire outbreak of temperature >800°C, under ideal conditions, with sufficient oxygen, only carbon dioxide and water vapour are produced as the raw material of PP-R is a hydrocarbon chain. Toxic fumes or dioxin will not be emitted.

Q: Should any precaution be taken for the installations at low temperatures?

A: Insulation is recommended for the temperatures under 0°C.

Q: What is the product range of VESBO PP-R system?

A: VESBO PP-R pipes and fittings are produced between Ø20 mm (1/2") - Ø110 mm (4")

Q: What are the production standards of VESBO?

A: Following standards are used for the production of VESBO pipes and fittings:

DIN 8077	Polypropylene Pipes, Dimensions
DIN 8078	Polypropylene Pipes, General Quality Requirements and Testing
DIN 16962	Pipe Joints and Elements for Polypropylene Pressure Pipes
DIN 1988 PART 2	Drinking Water Supply Systems, Materials, Components, Appliances, Design and Installation
DIN 16928	Pipe Joints and Elements for Pipes, Laying-General Directions
BS 6700	Design, Installation, Testing and Maintenance of Services Supplying Water for Domestic Use within Buildings and their Curtilages
DVS 2207	Welding of Thermoplastics
DVS 2208	Welding Machines and Devices for Thermoplastics

Q: How can we connect VESBO products to other metal systems?

A: VESBO system can be connected to other metal systems easily by a flange or a metal adaptor. (BS 6920)

Q: Is VESBO system insured?

A: VESBO system has "Third Party Liability Insurance" worldwide except USA and Canada.

Q: Should there be a standard pressure test application after the installation of VESBO system?

A: Yes. After installing VESBO piping system, it is necessary to go through a pressure test. Unlike metal pipes, VESBO, like all other plastic piping systems, has to follow different pressure test procedure owing to their mechanical properties of expansion when subject to pressure, temperature difference and coefficient of expansion. (Test procedure acc. To DIN 1988 PART 2 or BS 6700:1977). For detailed information, please contact to our Technical Department.

Q: Is insulation necessary for hot water applications?

A: Normally it is not obligatory for the plumbers, to make the insulation since the thermal conductivity of PP-R piping systems is lower compared to metal piping systems (0.24 W/mK). In case of special conditions, please contact to our Technical Department.

Q: What is the difference between PN 20 and PN 25 pipes due to the application areas?

A: Life span of PN 25 is longer than PN 20 pipes under the same temperatures and pressure conditions. Especially for the exposed installations, as the expansion of PN 25 pipes is 1/5 of PN 20 pipes, sagging and snaking problems are avoided.

Q: Are different colours available for VESBO piping system?

A: Yes. VESBO piping system is produced in blue, white and green colour.

Q: What is the difference between PE-Xb and PE-Xc?

A: The pressure resistance of regular PE pipe is low. Hence they should be cross-linked. This can be done either by a physical or a chemical procedure. PE-Xc pipes are cross-linked by a physical application and PE-Xb pipes that are cross-linked by a chemical application.

Q: What are the application areas of VESBO PE-X piping system?

A: PE-X piping systems has got a wide range of application areas such as:

Under floor heating,

Heating systems,

Hotels, resorts places and residences,

Sanitary systems (PE-Xc),

Food, chemical and industrial plants,

Hospitals and clinics,

Pools, greenhouses etc.

Q: What are the advantages of under floor heating systems?

A: A homogeneous distribution of heat is provided.
No heat accumulation on the ceiling is occurred; therefore it is economic.
The circulation of dust, germs and other micro-organisms is minimized for the system.

Q: What is the jointing method of VESBO PE-X piping system?

A: With the help of metal and plastic fittings, it is very easy and practical to install VESBO PE-X pipes. Please feel free to contact to our Technical Department for various applications.