1.Freel throw gravel material special screen used in high standards of geothermal wells.
2.For the gap screen, in order to filter from the inside out, wire surface can be reversed with supporting bar in the pipe.
3.And most surface wire can be combined like this way.The diameter of the gap screen can achieved 426mm,and slot width is variable.
1. It has high mechanical strength, can bear large pressure drop.
2. It has equal slots for filtering, can form equally distributed filter cake, easy to clean for reuse.
3. The wedge type slot can improve backflushing and regeneration performance.
4. It has resistance to pressure, temperature, aging, corrosion, can be applied for different kinds of fluid.
1.Johnson Water well Screen consist of V-shape profile wire and the longitudinal support rods. Each intersecting point of these wires is fusion welded of water well screen.
2.So it has sturdy constriction and good mechanical property.
3.the V-shape section plane can avoid blockage and make sure of the unimpeded water. the consecutive slot have more open area, and water well screen can reduce the speed of the water entering to avoid the sand entering the screen under the great pressure
4.so it can filter sand better. meanwhile ,the slot can change according to the real condition of the earth.