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Underfloor Heating System

Rifeng underfloor heating system highlights oxygen barrier PEX pipes, fittings and manifolds in both residential and commercial projects. We make sure that every single component in our underfloor heating system is designed and produced to the same uncompromising standards.

 

Technical specification

Advantages:
• Pipes resistant to harmful chemicals and meets the CL5 classification of chlorine resistance
• Pipes prevents oxygen permeation through the tubing wall which causes the corrosion of ferrous metal components in closed loop heating systems
• Pipes is flexible and available in long coils that needs less fittings than rigid tube and light in weight
• Manifolds selects material of stable chemical elements and undergoes testing for tensile strength, hardness, and anti-corrosion
• System service life up to 50 years


Applications:
Radiant underfloor heating system

 
Standards:
ISO 15875 - PLASTICS PIPING SYSTEMS FOR HOT AND COLD WATER INSTALLATIONS - CROSSLINKED POLYETHYLENE (PE-X)
ASTM F876 - Standard Specification for Crosslinked Polyethylene (PEX) Tubing
ASTM F877 - Standard Specification for Crosslinked Polyethylene (PEX) Hot- and Cold-Water Distribution Systems
WRAS regulations - WRAS water supply regulations


Certificates:
NSF - refers to ASTM F876/877
WRAS- refers to regulations
ISO 9001:2015 – “Quality management system”

 
TY PEX Pipe
Roughness  0.0007 mm
Density 0.926~0.959 g/cm3     
Modulus of elasticity 600~800 MPa
Thermal conductivity 0.40~0.42 w/mK
Coefficient of thermal expansion       0.20 mm/mK
ASTM
Size                Length per coil (ft) O.D. I.D.
3/8 300/500/1000 0.500''              0.350''                   
1/2 100/300/500/1000             0.625'' 0.475''
5/8 300/500/1000 0.750'' 0.574''
3/4 100/300/500/1000 0.875'' 0.671''
1 100/300/500 1.125'' 0.682''

ISO
Nominal size DN/OD                             PIPE SERIES
Wall Thickness
  S6.3                      S5                    S4                 S3.2                        
12 - 1.3 1.4 1.7
16 1.3 1.5 1.8 2.2
20 1.5 1.9 2.3 2.8
25 1.9 2.3 2.8 3.5
32 2.4 2.9 3.6 4.4
40 3.0 3.7 4.5 5.5
50 3.7 4.6 5.6 6.9
63 4.7 5.8 7.1 8.6

As per ISO 15875
 
Working Performance:
Max. Working Pressure: 10bar(145 psi)
Cont. Working Temperature: 32°F (0°C) ~ 158°F (70°C)
Max. Instantaneous Working Temperature (Max. 10 min/day): 212°F (100°C)
Max Differential Pressure: 1 bar (14.5 psi)


Working Media:
1: Water
2: 50% water and 50% ethylene glycol
3: 50% water and 50% propylene glycol


Material:                                                                                                                    
Manifolds Body: 304 Stainless Steel or brass
Port Connection: Nickel coated brass
Sealing Ring: EPDM


Flow:
Indication Scale - 0.5 ~ 5 L/min, Tolerance ±10%
Kvs - 1.10

 
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