The GEORGE FISCHER range of valves are available in PVC-U, PVC-C, ABS as well as PP-H, PP-n and PVDF. A full range of valves include:
Also included in the GF Valve Range are:
Chemical process industry; life science; microelectronics; measurement & control; water treatment; ship building etc.
Wherever you are dealing with the control and metering of hazardous substances, the new diaphragm valve from GEORGE FISCHER PIPING SYSTEMS is a real life saver, because this is the safest diaphragm valve available. Instead of the usual four...
The ball valve Type 546 is yet another innovative product developed by GEORGE FISCHER PIPING SYSTEMS and distributed by Quadrant Chemplast; it comprises extensive experience and the latest technology. A broad spectrum of product features...
Quadrant Chemplast presents the new GEORGE FISCHER 567/568 type series of butterfly valves with a comprehensive range of products and a multitude of interesting combination possibilities. We can offer you, for example, manual valves with...
Included are pressure relief valves, pressure regulating valves and pressure retaining valves in PVC-U, Polypropylene and PVDF in sizes from DN10 to DN100. Pressure ranges from 0.5 to 10 Bar. Also available are gauge guards, ventilating...
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