George Fischer's Infrared fusion technology is a substantial improvement over older fusion methods such as contact butt fusion and socket fusion. IR fusion is accomplished by use of a revolutionary infrared heat source and computerised installer guidance program ensuring high quality, reproducible fusion welds of high mechanical strength. Completing the system are SYGEF HP PVDF butt fusion fittings and valves specifically designed for use with the IR-63 Plus and IR-225 Plus fusion machines. For the unique demands of today’s ultra-pure water systems, the George Fischer SYGEF HP PVDF piping and IR Plus™ (Infrared) fusion systems offer the highest degree of repeatability and confidence available today.
The IR-Plus fusion machines from GF Piping Systems meet the highest demands in terms of fusion weld quality and purity. They are the fusion machines of choice in the microelectronic (semicon, photovoltaic) chemical process and life science industries as well as in biotechnology. The IR-Plus fusion machines comply fully with the strict EU Regulation 2002/95/EC. Handles sizes up to 450mm
We stock welding rod in PVC-U and PP.
Weld bead is typically 50% smaller than conventional butt-fusion (DVS 2207)
Conforms to DVS 2207-6 (2003) and SEMI F57 Standards.
Jointing technology is used in areas like mains or distribution lines, service connections, fire fighting systems, irrigation or industrial applications. Alternative to conventional butt-fusion in applications where purity, weld-strength, traceability and speed of installation are imperative. Typical market segments include Semiconductor/ Microelectronics, Chemical Processing and workshop pre-fabrication.
Plastic pipe dimensions are, by convention, specified by the outside diameter, usually denoted by e. This may be supplemented by stating the nominal inside diameter or DN. Sometimes the pipe wall thickness is specified by the SDR or Standard Dimension Ratio.
SDR = d divided by e.
Where d = the outside diameter (mm)
Where e = the pipe wall thickness (mm)
The pipe size can be calculated as follows:
di = 18.8 √Q1 ÷ v
di = Inside pipe diameter (mm)
Q1 = Flowrate in m3/h
v = Flow velocity, usually 0.5 to 1.0 m/s for suction lines
1.0 to 3.0 m/s for discharge lines.
|Material||α = mm/mK|
A rough calculation of pressure loss in straight length plastic pipe can be done using,
Δ Pr = λ × (L ÷ di) × (ρ ÷ 2.102) × v2
Δ Pr = Pressure loss (bar)
λ = Pipe friction factor
L = Length of straight pipe (m)
di = Inside pipe diameter
ρ = Liquid density (kg/m3)
v = Flow velocity (m/s)
For smooth bore plastic pipe: λ = 0.02