Dita Pex-A

Crosslinked polyethylene

The crosslinked polyethylene, known by its initials as PEX or XLPE, is one of the different types of crosslinked polyethilene that exists. . It is used to make pipes and hoses, and is highly used in the construction of radiant heating systems that use water, domestic water pipes and insulation for electric power lines. It is also used for systems that handle natural gas and offshore oil, chemical transport, and transport of sewage and drainage. Furthermore, it has become an alternative to polyvinyl chloride (PVC), chlorinated polyvinyl chloride (CPVC) or copper tube pipes for household water systems. PEX pipes are manufactured in a number of measures ranging from 1/4-inch to 32 -inch diameter pipes but 1/2-inch, 3/4-inch and 1-inch are those used most frequently in the real state industry whilst in the mining industry are used from 4 “to 32” diameter for water transport, transport of abrasive fluids and corrosive fluids. In international units PEX pipes are manufactured in the following diameters: 16 mm, 20 mm, 25 mm, 32 mm, 40 mm, 50 mm, 63 mm, 75 mm, 90 mm and 110 mm.

POLYETHYLENE PIPE

Crosslinked Polyethylene pipes PIPEX are manufactured by the peroxide method , ranking within the PEX -A group. This gives greater resistance to high pressures and temperatures that most pipes PEX in the market , increasing the quality and durability of the system.

Crosslinked Polyethylene pipes PIPEX are manufactured according to the  UNE -EN ISO 15875 , common to all European countries . All PEX -A pipes are Certified by leading European Quality institutes ( AENOR , SKZ , CSTB , IIP) .

Advantages of PIPEX Pex Pipe Pex -A: 

• Easy to install
• Flexibility , superior to the rest Pex Pipe
• Resistant to high temperatures
• Resistant to high pressures
• Light. It weighs 7 times less than copper.
• Resistant to Oxygen Diffusion
• Resistant to corrosion and abrasion
• Minimum load loss
• Resistant to frost
• Thermal memory

 

> The PIPEX tube meets the sanitary regulations of the main European countries for use in drinking water. Also contains no substances that could affect the organoleptic properties of water.

> These properties characterize PIPEX as the ideal driving pipe for applications in hot water ( heating pipes , floor heating or hot water for sanitary use ) or conduction of corrosive fluids.

> Crosslinked polyethylene pipes PIPEX are manufactured according to the UNE -EN ISO 15875 , common to all European countries. All PEX -A pipes are certified by the main Institutes (AENOR , SKZ , CSTB , IIP) .

 

ADVANTAGES OF PIPES PIPEX

•   Ease of Installation . No welding or machining is required. The system of accessories -fittings offers simplicity and economic profit.
•   Flexibility. PEX- tubes A ( peroxide ) flexibility is higher than the crosslinked PEX pipes from other systems. They can be bent in cold and folded very simply and without special tools , and saving installation time.
•   Resistant to high temperatures. Can be used at temperatures up to 95 ° C and even 110 ° C for some hours.
•   Withstanding high pressures. At higher crosslinking levels, higher pressure resistance . This property confers a lifetime that exceeds 50 years of installation.
•   Corrosion resistant . Suitable for conducting corrosive fluids.
•   Minimum losses.The roughness of the inner walls of PIPEX tubes , is much lower than the one in metallic pipes . This reduces the energy needed to pump water through the installation, thus enabling pipes with equal diameters to carry more water flow inside.
•   No fouling. Avoids obstructions and ensures low pressure drops throughout the life of the installation..
•   Resistant to abrasion.
•   Lightweight . Weighs 7 times less than Copper tubes and 13 times less than steel tubes for equivalent diameters.
•   Optimas hygienic – sanitary conditions . Does not alter the organoleptic characteristics of drinking water.
•   Insulation. Low coefficient of thermal conductivity providing energy savings by reducing heat loss .
•   Resistant to frost Prevents condensation and the possibility of water freezing is reduced.
•   Electrical insulator. Eliminates any galvanic corrosion.
•   No noise transmitted Its flexibility greatly reduces the transmission of acoustic impacts even at the highest water flow speeds.
•   Suitable for seismic zones Because of their elasticity and flexibility, they can absorb greater stresses than metallic pipes .
•   Thermal memory . PIPEX pipes recover their original shape when hot air is applied to them. Corrects errors on installation and it is easier to repair.

 

TECHNICAL DATA ABOUT PIPEX PIPES

PHYSICAL CHARACTERISTICS

Feature	value	unit
Density	951	Kg/m3
Degree of crosslinking	> 75	% Weight
Roughness	0,007	mm

 

THERMAL CHARACTERISTICS

Feature	value	unit
Maximum temperature of service	95	ºC
Maximun ocassional temperature	110	ºC
Reaction to heat 120ºC; 1h	< 2,5	%
Coefficient of linear expansion	1,5  10-4	K-1
Specific heat at 23ºC	2,3	KJ/kg.K
Thermal conductivity	0,35 – 0,38	W/ m.K
VICAT Temperature	130 – 132	ºC

 

CARACTERÍSTICAS MECÁNICAS

Feature	valor	unidad
Tensile strength	> 22	N/mm2
Elongation at break	> 400	%
Modulus of elasticity at 20 ° C	> 800	N/mm2
Resistance to internal pressure s= 4.8 MPa s , 95ºC	> 1	Hours
Resistance to internal pressure s= 4.7 MPa s , 95ºC	> 22	Hours
Resistance to internal pressure s=4,6 Mpa, 95ºC	> 165	Hours
Resistance to internal pressure s=4,4 Mpa, 95ºC	> 1000	Hours
Resistance to internal pressure s=2,5 Mpa, 110ºC	> 1	year

 

 

CONDICIONES DE SERVICIO PARA LA TUBERÍA PIPEX

Application class	temp. (ºC)	coef. security	service time(year)	maximum working pressure
Domestic cold water	20	1.25	1	15.9	19.9	24.8
			50	15.2	19.0	23.8
Supply of hot water at 60°C	60	1.5	49	8.0	9.9	12.4
	80	1.3	1	7.7	9.7	12.1
	95	1	0.011	9.1	11.4	14.2
Supply of hot water at 70ºC	70	1.5	49	7.1	8.9	11.1
	80	1.3	1	7.7	9.7	12.1
	95	1	0.011	9.1	11.4	14.2
Underfloor heating and low temperature radiators	20	1.25	2.5	15.7	19.7	24.6
	40	1.5	20	10.1	12.6	15.8
	60	1.5	25	8.0	10.0	12.5
	70	1.3	1	8.6	10.8	13.5
	100	1	0.011	8.6	8.3	10.4
Heating radiators high temperature	20	1.25	14	15.4	19.3	24.1
	60	1.5	25	8.0	10.0	12.5
	80	1.5	10	6.5	8.1	11.7
	90	1.3	1	7.0	8.7	10.9
	100	1	0.011	8.6	8.3	10.4
				SET 5	SET 4	SET 3,2

 

  DESIGNED PRESSURE FOR PEX PIPE

Thedesinged pressure is the working pressure assigned for each application class. The designed pressure for some of the most conventional tube installations are:

APPLICATION CLASS	DESIGNED PRESSURE
	16 x 18	20 x 1,9	25 x 2,3	32 x 2,9
Domestic cold water	10 bar	10 bar	10 bar	10 bar
Supply of hot water at 60ºC	8 bar	6 bar	6 bar	6 bar
Supply of hot water at 70ºC	8 bar	6 bar	6 bar	6 bar
Underfloor heating and low temperature radiators	10 bar	8 bar	8 bar	8 bar
Heating radiators high temperature	8 bar	6 bar	6 bar	6 bar

LOSSES                                                                                   REGRESSION CURVES

 

                                                                               

 APPLICATIONS PIPES PIPEX
• Plumbing (hot and cold domestic water ) .
• Heating radiators.
•  Underfloor heating installation .
• Melting systems of frost at the entrances to public buildings and private homes.
• Air conditioning.
• Industrial installations (compressed air , transportation of toxic or corrosive fluids) .
• Livestock installations .

QUALITY CONTROL

All production of crosslinked polyethylene pipes PIPEX are subjected to continuous testing and quality controls which ensure that the product sold is right. Agrometzer SA has a laboratory equipped with the latest quality controlled equipment to perform all the required tests to the pipe:

>   Sizing. (outer diameter , inner diameter , wall thickness) . Double Control : Continuously on the production line and again on the product already manufactured . UNE -EN ISO 3126.
>   Degree of crosslinking. According to the standard UNE- 579 .
>   Behavior to heat.( Longitudinal Shrinkage ) . According to ISO 2505 .

>   Resistance to internal pressure . According to UNE-EN ISO 1167 rule.
>  Induction time to oxidation. According to UNE-EN 728 rule. Although this test is not included in the rules of PEX tubing it is used to determine the level of thermal stabilization of the tube.
>   Carbon black content. (Black tubes). According to ISO 6964.
>   Elongation at break. According to ISO 6259.

CAUTIONS

• Place the tube in its original packaging avoiding exposure to direct sunlight that can damage the quality of the tube.
• Store the tube in a covered, dry place.
• Avoid contact with hard pipes and cutting materials that can cause damage, both during installation and transport.
• The bend radius of the installation must be 5 times the nominal diameter of the pipe if done in cold while using a pipe bending machine. This radius may be lower if the bending becomes hot (use an air heater and never a direct flame).
• Do not apply  direct flames to the tube that could melt it.
• Use plastic to secure the tubes (brackets / rails) and don’t use metallic materials that could damage the tube (wires).
• Do not use chemical solvents during the installation of the tube.
• After installing the pipe it is essential to perform a load test on the installation as explained in the UNE-ENV 12108 so that they can evidence whether there are fluid losses caused by bad connections or damaged material.

 

IDENTIFICATION

PIPEX pipes are marked indelibly on each meter with the following message :

• AENOR 001/329 – Our brand of quality according to the AENOR product certificate .
• SKZ A 464 – Our brand number SKZ (Germany ) .
• IIP UNI 373 – Our brand IIP numbers (Italy ) .
• PIPEX – Our trademark .
• PEX -a – Pipe peroxide crosslinked polyethylene .
• Diameter x Thickness in mm.
• Class of application and designed pressure.
• UNE -EN ISO 15875. Standard reference for the production and certification of the tube.
• Date of manufacture.
• Footage .

 

NATURAL COLOR TUBES

	diameter mm	thickness  mm	code	Coil length in meters	mts. per pallet	PVP €/m
	16*	1.8*	915916180	200	4.000	Consult
				120	3.600
				100	3.000
	20	1.9	915920190	200	3.600	Consult
				120	2.640
				100	2.200
	25	2.3	915925230	50	1.400	Consult
	32	2.9	915932290	50	800	Consult
	5.0 SERIES IN COILS                     * This dimension belongs to number 4.0

 

s

	diameter mm	Thickness mm	code	bar length in meters	mts.per             pallet	PVP €/m
	16	1.8	915916180	200	5.000	Consult
	20	1.9	915920190	100	3.750	Consult
	25	2.3	915925230	100	2.500	Consult
	32	2.9	915932290	75	1.875	Consult
	5.0 SERIES IN BARS 5m

 

	diameter mm	Thickness mm	Code	Coil length in meters	mts. per pallet	PVP €/m
	16	2.2	915916220	100	3.000	Consult
	20	2.8	915920280	100	2.200	Consult
	25	3.5	915925350	50	1.300	Consult
	32	4.4	915932440	50	1.100	Consult
	3.2 SERIES IN COILS                                Available in bars 5m .

 

 

	diameter mm	thickness mm	code	coil length in meters	mts. per pallet	PVP €/m
	16	2.0	915916200	100	3.000	Consult
	18	2.0	915918200	100	2.400	Consult
	20	2.0	915920200	100	2.200	Consult
	25	25	915925250	50	1.300	Consult
	32	30	915932300	50	1.100	Consult
	12	1.1	915912110	200	5.000	Consult
	16	1.5	915916150	100	3.000	Consult
	10	1.3	915910130	200	5.000	Consult
	12	2.0	915912200	100	3.000	Consult
	14	2.0	915914200	100	3.000	Consult
	15	2.5	915915250	100	3.000	Consult
	18	2.5	915918250	100	2.400	Consult
	22	3.0	915922300	100	2.200	Consult
	28(*)	3.0	915928300	50	1.100	Consult
	SPECIAL DIMENSIONS IN COILS

(*) This model is not in the UNE -EN ISO 15875

PEX PIPE -A  anti-oxygen barrier – EVOH

PIPEX pipes – EVOH are manufactured according to UNE -EN ISO 15875. They are crosslinked polyethylene pipes according to PEROXIDE (PEX -A ) method with oxygen barrier antidiffusion ( EVAL system) depending on the requirements of the European standard EN 1264- 4 .
The barrier EVOH oxygen antidiffusion is a thin layer of ethyl vinyl alcohol copolymer that prevents the permeability of the tube to the diffusion of oxygen, eliminating the problem of oxigene contribution to the water flow and corrosion on metal fixtures, extending the life of the entire installation.
The PIPEX – EVOH tubes meet the highest quality requirements and are certified with the AENOR product.
PIPEX – EVOH pipes combine the advantages of peroxide – PEX pipes (excellent temperature resistance to higher pressures, crosslinking uniformity and superior flexibility , … ) with the anti-diffusion barrier properties of the EVOH . Therefore:
• The tubes with PIPEX -EVOH barrier have the same resistance to temperature, pressure resistance and warranty than PEX tubes without barrier .
• They offer reduced permeability to oxygen.
• PIPEX – EVOH tubes require the same accessories – fittings than PEX pipes with no barrier .
• Thermal memory in PIPEX – EVOH tubes equals the one in PIPEX tubes .

PIPEX – EVOH tubes can also be used for sanitary and heating installations, for both certified according to UNE -EN ISO 15875 , reaching temperatures of 95ºC and even 110 ° C for short periods of time.

 

NATURAL COLORED TUBES

	diameter mm	thickness mm	code	coil length mts	mts. per pallet	PVP €/m
	16*	1.8*	911916180	200	4.000	Consult
				120	3.600
				100	3.000
	20	1.9	911920190	200	3.600	Consult
				120	2.640
				100	2.200
	25	2.3	911925230	50	1.400	Consult
	32	2.9	911932290	50	800	Consult
	5.0 SERIES IN COILS

 

	diameter mm	thickness mm	code	coil lenght mts	mts. per pallet	PVP €/m
	16	2.0	911916200	200	5.000	Consult
	17	2.0	911917200	200	4.400	Consult
	18	2.0	911918200	200	3.600	Consult
	20	2.0	911920200	100	2.200	Consult
	SPECIAL DIMENSIONS IN COILS

 

	diameter mm	thickness mm	code	coil lenght meters	mts. per pallet	PVP €/m
	16	2.2	911916220	100	3.000	Consult
	20	2.8	911920280	100	2.200	Consult
	25	3.5	911925350	50	1.300	Consult
	32	4.4	911932440	50	1.100	Consult
	3.2 SERIES IN COILS                        Available in 5m bars .

 

POLYETHYLENE PIPE IN LARGE DIAMETERS – PIPEX -SB

PIPEXsystems SA has developed a range of cross-linked polyethylene pipes of large diameters , made by the silane crosslinking method . Being ranked within the group so called PEX -B. The PIPEX -SB pipes are manufactured according to UNE -EN ISO 15875 and certified by AENOR Product
They meet the same characteristics in terms of operating conditions, regression curves and load losses than PIPEX tubes .

 

APPLICATIONS FOR PIPEX -SB PIPES 
• Plumbing (hot and cold domestic water ) .
• Industrial installations (compressed air , conduction of toxic or corrosive fluids, … ) .

POLYETHYLENE PIPES IN HIGH LARGE DIAMETERS (PEX -B )

NATURAL COLORED TUBES

	diameter mm	thickness mm	code	bar length mts	mts. per pallet	PVP €/m
	40	3.7	912940370	50	1.100	Consult
	50	4.6	912950460	30	660	Consult
	63	5.8	912963580	20	440	Consult
	75	6.8	912975680	15	330	Consult
	90	8.2	912990820	10	220	Consult
	110	10	9129110100	5	150	Consult
	5.0 SERIES IN BARS 5m

 

 

WARRANTY

PIPEX pipes are warranted for 10 years by a civil liability insurance covering up to 600,000 euros / year.

 

SCOPE OF WARRANTY

• The responsibility of PIPEX systems SA covers free replacement costs of Pex-A PIPEX tubes presenting damage  attributed to evidenced failures in the factory´s production. The necessary repair work to restore the previous state of the mishap is also included. Extra compensation is excluded, either caused by stopping the exploitation and / or production, as well as caused by depreciation and other indirect damage.
• PIPEXsystems SA is liable for all damages caused by the defective material in the sponsor or third parties installation/construction site.
• PIPEXsystems SA reserves the right to order the possible  sanitary measures to specialist companies of their choice.
• PIPEXsystems SA assumes responsibility under the two preceding paragraphs under a total annual amount of € 600,000.
• On the other damage or injury not covered in the previous two paragraphs, PIPEXsystems SA responds according to the legal stablished orders.
• To validate the rights under this warranty, the owner must submit the notification of the accident within the time stipulated in the terms of the warranty.
• Any notice, consent or resolution must be notified on a written text  to be valid.

CONDITIONS OF WARRANTY:

· The warranty is provided on the condition that between the completion of the installation and the accident, the amount of time is under 10 years
· The use of the tube with unknown or non-approved fittings by PIPEX SYSTEMS SA, as well as the use of running water  coming from anywhere else than the supply network, will avoid the warranty.
· This warranty does not take effect when the installation has not complied with the manufacturer’s installation instructions, and  technical information of the manufacturer has not been taken into account.
• The installation must be performed by a specialized and registered company . The warranty excludes damage of any kind due to force majeure, as well as errors or incorrect assembly.
· The warranty requires written notification to PIPEX SYSTEMS SA , within three days from the date of the incident .
· In case of failure, PIPEX SYSTEMS SA reserves the right to inspect the damage, always within  the following eight days  to the incident and before starting any process to amend the situation.
· The measures taken by PIPEX SYSTEMS SA in order to minimize damage do not imply recognition of responsability under the conditions of the warranty. The negotiations on compensation should never be considered as a waiver to the objection that the notification of the accident has not been presented in due course, wether technically unjustified or deficient.

QUALITY

 

PIPEXsystems SA meet the highest quality requirements of business . Therefore they are certified under the ISO 900 standard with AENOR and IQNET .

The strict quality controls that  PIPEXsystems SA requires have allowed PIPEX pipes to obtain the approval of the main European Institutes Quality Certifications . These certificates ensure that both the PEX -A pipe PIPEX and the production processes are subjected to the relevant tests and inspections of independent organizations that fully comply with the UNE -EN ISO 15875

SKZ Certificate (Germany )

 

CSTB Certificate (France )

 

 

IIP Certificate (Italy)