MULTILAYER PLUMBING SYSTEM
RIFENG Multilayer Plumbing Pipe is the next generation of pipes that unite the advantages of plastic and metal pipes and offers a high degree of flexibility and toughness, coupled with high pressure and temperature resistance. RIFENG Multilayer Plumbing System consists of an inner and outer layer which include a layer of overlap welded (or butt welded) aluminum in the middle, these three special bonding layers work together to build a permanent structure for a better, longer-lasting pipe. At the same time, the aluminum layer can maintain the shape of the pipe and prevent oxygen penetration from the atmosphere.
RIFENG Multilayer Plumbing Pipe is the next generation of pipes that unite the advantages of plastic and metal pipes and offers a high degree of flexibility and toughness, coupled with high pressure and temperature resistance. RIFENG Multilayer Plumbing System consists of an inner and outer layer which include a layer of overlap welded (or butt welded) aluminum in the middle, these three special bonding layers work together to build a permanent structure for a better, longer-lasting pipe. At the same time, the aluminum layer can maintain the shape of the pipe and prevent oxygen penetration from the atmosphere.
RIFENG Multi-jaw Press Fitting
• Fitting Could be preesed with U/H/TH/RFZ profiles. Three O-rings on the fittings, which make better sealing performane.
• Leakage indication, if the fitting are not be pressed, water leakage will be happened during the pressure test.
• The fitting is in runcinate shape, which can improve the tensile strength by 1.5 times. Even when the pipe was pulled out, can be sure there is no loose would be found in the connecton parts.
• Fitting Could be preesed with U/H/TH/RFZ profiles. Three O-rings on the fittings, which make better sealing performane.
• Leakage indication, if the fitting are not be pressed, water leakage will be happened during the pressure test.
• The fitting is in runcinate shape, which can improve the tensile strength by 1.5 times. Even when the pipe was pulled out, can be sure there is no loose would be found in the connecton parts.
Technical specification
Advantages:
• Entirely corrosion-resistant
• A strong barrier against oxygen and light
• Inherent stability and high bend flexibility
• Excellent hydrostatic stress performance
• Lightweight
• Less pressure loss is ensured by a smooth inner wall
• Up to 25 years of service life
• Both overlapping and butt welding are available
Applications:
RIFENG Multilayer plumbing system can be used in the following applications: LPG vapor, natural gas, and natural gas liquids.
• Entirely corrosion-resistant
• A strong barrier against oxygen and light
• Inherent stability and high bend flexibility
• Excellent hydrostatic stress performance
• Lightweight
• Less pressure loss is ensured by a smooth inner wall
• Up to 25 years of service life
• Both overlapping and butt welding are available
Applications:
RIFENG Multilayer plumbing system can be used in the following applications: LPG vapor, natural gas, and natural gas liquids.
Standards:
EN ISO 21003 - Multilayer piping systems for hot and cold water installations inside buildings
ASTM F1281 - Standard Specification For Crosslinked Polyethylene/Aluminum/Crosslinked Polyethylene (PEX-AL-PEX) Pressure Pipe.
BRL-K536 E - Plastics piping systems of PE-X/Al intended for the transport of cold and heated drinking water
DVGW W 534 (P) - Pipe Connectors and Pipe Joints in Drinking Water Installation
DVGW W 542 - COMPOUND PIPES IN THE DRINKING WATER INSTALLATION; REQUIREMENTS AND TESTING
DVGW W 270 - A method for the assessment of enhancement of microbial growth on non-metallic materials in contact with drinking water
UBA KTW - about Hygienic property of material odor test
UBA ELASTOM - Guideline for hygienic assessment of elastomers in contact with drinking water
AS 4176.2 & 3 - Multilayer piping for pressure applications - Multilayer piping systems for hot and cold water plumbing applications- PIPES & FITTINGS
XP P41-250 - Effect of materials on the quality of water intended for human consumption - Organic materials
NSF /ANSI /CAN 61 - Health Effects of Drinking water system components
Certificates:
AENOR - refers to EN ISO 21003
NF - refers to ISO EN ISO 21003
QB - refers to EN ISO 21003
KIWA - refers to BRL-K536 E
DVGW - refers to DVGW W 534 (P), DVGW W 542, DVGW W 270, UBA KTW, UBA ELASTOM
ACS - refers to XP P41-250
WaterMark - refers to AS 4176.2 & 3
NSF - refers to ASTM F1281 and NSF /ANSI /CAN 61
WRAS - refers to Regulators’Specification
STF - refers to EN ISO 21003
ISO 9001:2015 – “Quality management system”
EN ISO 21003 - Multilayer piping systems for hot and cold water installations inside buildings
ASTM F1281 - Standard Specification For Crosslinked Polyethylene/Aluminum/Crosslinked Polyethylene (PEX-AL-PEX) Pressure Pipe.
BRL-K536 E - Plastics piping systems of PE-X/Al intended for the transport of cold and heated drinking water
DVGW W 534 (P) - Pipe Connectors and Pipe Joints in Drinking Water Installation
DVGW W 542 - COMPOUND PIPES IN THE DRINKING WATER INSTALLATION; REQUIREMENTS AND TESTING
DVGW W 270 - A method for the assessment of enhancement of microbial growth on non-metallic materials in contact with drinking water
UBA KTW - about Hygienic property of material odor test
UBA ELASTOM - Guideline for hygienic assessment of elastomers in contact with drinking water
AS 4176.2 & 3 - Multilayer piping for pressure applications - Multilayer piping systems for hot and cold water plumbing applications- PIPES & FITTINGS
XP P41-250 - Effect of materials on the quality of water intended for human consumption - Organic materials
NSF /ANSI /CAN 61 - Health Effects of Drinking water system components
Certificates:
AENOR - refers to EN ISO 21003
NF - refers to ISO EN ISO 21003
QB - refers to EN ISO 21003
KIWA - refers to BRL-K536 E
DVGW - refers to DVGW W 534 (P), DVGW W 542, DVGW W 270, UBA KTW, UBA ELASTOM
ACS - refers to XP P41-250
WaterMark - refers to AS 4176.2 & 3
NSF - refers to ASTM F1281 and NSF /ANSI /CAN 61
WRAS - refers to Regulators’Specification
STF - refers to EN ISO 21003
ISO 9001:2015 – “Quality management system”
| TYPE | Multilayer Pipe | |||
| Overlapped welded | A(PE-AL-PE) | B1 (PEX-AL-PEX) | B (PERT-AL-PERT) | C (PE-AL-PE) |
| Roughness(mm) | 0.0007 | 0.0007 | 0.0007 | 0.0007 |
| Melting point (℃) | 135 | － | 127 | 127 |
| Density (g/cm3) | 0.941-0.959 | 0.926-0.959 | 0.926-0.940 | 0.941-0.959 |
| Modulus of elasticity (MPa) |
7200 | 7200 | 7200 | 7200 |
| Thermal conductivity (w/mK) |
0.45 | 0.45 | 0.45 | 0.45 |
| Coefficient of thermal expansion (mm/mK) | 0.025 | 0.025 | 0.025 | 0.025 |
| Material | Test item | Requirement |
| Polyethylene | Density | HDPE：0.941~0.959 g/cm3 MDPE：0.926~0.941 g/cm3 |
| (PEX) | Melt flow index | HDPE、MDPE≥0.1 g/10min(190，2.16kg) |
| Tensile strength | HDPE≥21MPa；MDPE≥14MPa | |
| Enlongation | ≥400% | |
| Vicat soft point | Vicat soft point≥105℃ | |
| Cross-linking degree | ≥65% | |
| ESCR | ≥165h | |
| Color masterbatch | Moisture content | ≤0.15% |
| Appearance | Uniform granual | |
| Volatile content | ≤0.5% | |
| catalyst | Density | ≥0.93 g/cm3 |
| Melt flow index | ≥0.9 g/10min（190℃，5.00kg） | |
| Volatile content | ≤0.35% | |
| Adhesive resin | Appearance | Uniform granual |
| Density | ≥0.926 g/cm3； | |
| Melt flow index | 2.0~6.0 g/10min（190℃，2.16kg） | |
| Vicat soft point | Vicat soft point≥105℃ | |
| T peeling strength | ≥70N/25mm | |
| Aluminum | Surface quality | Water brush test≥class |
| Tensile strength | 105MPa～125MPa | |
| Appearance | Without oil on surface | |
| Hardness(HV) | 28～33 | |
| T peeling strength | Minimum value≥60N/25mm |
| Nominal size(D x e) | 14×2.0 | 16×2.0 | 18×2.0 | 20×2.0 | 25×2.5 | 32×3.0 | 40x4.0 | 50x4.5 | 63x6.0 | 75x7.5 | |
| Outside diameter (mm) | 14 | 16 | 18 | 20 | 25 | 32 | 40 | 50 | 63 | 75 | |
| Tolerance of Outer diameter (mm) | Min | 14.00 | 16.00 | 18.00 | 20.00 | 25.00 | 32.00 | 40.00 | 50.00 | 60.60 | 70.70 |
| Max | 14.20 | 16.20 | 18.20 | 20.20 | 25.20 | 32.20 | 40.40 | 50.50 | 63.00 | 75.00 | |
| Inside diameter(mm) | 10 | 12 | 14 | 16 | 20 | 26 | 32 | 41 | 51 | 60 | |
| Tolerance of Inner diameter (mm) | Min | 9.90 | 11.90 | 13.90 | 15.90 | 19.90 | 25.90 | 30.90 | 39.40 | 49.30 | 57.70 |
| Max | 10.20 | 12.20 | 14.20 | 16.20 | 20.20 | 26.20 | 31.90 | 40.80 | 50.80 | 59.70 | |
| Pipe thickness (mm) | 2 | 2 | 2 | 2 | 2.5 | 3 | 4 | 4.5 | 6 | 7.5 | |
| Tolerance of pipe thickness (mm) | Min | 2.00 | 2.00 | 2.00 | 2.00 | 2.40 | 2.90 | 4.00 | 4.50 | 6.00 | 7.50 |
| Max | 2.25 | 2.25 | 2.25 | 2.25 | 2.70 | 3.20 | 4.60 | 5.20 | 6.80 | 8.50 | |
Compression connections:
This fitting allows for the connection of multilayer pipes. On the coupling ends, the union with the polyethylene inner tube is sealed by O-rings placed on the removable insert that is introduced into the fitting body and the tube. The connection is tightened by the nut with a wrench.
Press connections:
Use special tools, phisically press a connection onto the pipe to make an impermeable connection or seal. RIFENG provide 4 different press fittings.
F5 used with U profile crimper
F9 (leakage indicate) used with TH profile crimper
F17 used with U, TH, H, RFZ profile crimper
F18 (leakage indicate) used with U, TH, H, RFZ profile crimper
This fitting allows for the connection of multilayer pipes. On the coupling ends, the union with the polyethylene inner tube is sealed by O-rings placed on the removable insert that is introduced into the fitting body and the tube. The connection is tightened by the nut with a wrench.
Press connections:
Use special tools, phisically press a connection onto the pipe to make an impermeable connection or seal. RIFENG provide 4 different press fittings.
F5 used with U profile crimper
F9 (leakage indicate) used with TH profile crimper
F17 used with U, TH, H, RFZ profile crimper
F18 (leakage indicate) used with U, TH, H, RFZ profile crimper
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