PVC filters

Basket filters are characterized by a double walled filter system – that is two concentric micro-slotted pipes coupled together through threaded flanges. The cavity between the two is filled with filtering material such as siliceous gravel, calibrated according to the stratification of the ground.

These filters can be used to reclaim wells clogged with sand and as permanent drainage systems (easy to clean from lime scale) etc.

DescriptionValueUnitTest method
Specific weight1,35 - 1,46g/cm³iso 1183
Linear expansion coefficient0,06 - 0,08mm / m. C°UNI 6061167
Thermal conductivity0,13kcal / mh C°DIN 51612
Traction,pressure and twisting elasticity tests "E"30.000Kg / cm²ASTM D 747
Electrical resistance10^12Ohm cmUNI 4288
Elongation load in traction500 ÷ 550Kg/cm²ASTM D 638
Elongation at traction10%
Water absorption0,04÷0,06mg/cm²ASTM D 570
Destructive elongation100÷170%ASTM D 638
Shock resistance (Test method Charpy)5Kg cm / cm²ASTM D 256-56
Fire resistanceSelf-extinguishingASTM D 635-56 T
Softening temperature82ASTM D 985

Different and/or greater diameters are available on request.

Outside diameterInside diameterThreadinglength of the bars
inchesmminchesmmmt
2"601"33,3Trapezoidal1 - 3
2"1/2751" - 1"1/433,3 - 42Trapezoidal1 - 3
3"891"1/2 - 2"48 - 60Trapezoidal1 - 3
4"1142" - 2"1/260 - 75Trapezoidal1 - 3
1252"1/2 - 3"75 - 89Trapezoidal1 - 3