tubelar back wash filter

Internal backwash utilizes the system’s filtrate to clean the system. This is  accomplished by changing the lower valve from the inlet to the drain position on one  filter unit. A portion of the filtrate from the remaining on-stream units flows in the  reverse direction through the backwashing unit to dislodge collected solids. Each unit  is backwashed in turn, individually and consecutively to return the system to a clean  condition. Internal backwash should be considered when the process stream is of sufficient  flow and pressure to ensure an adequate backwash, or when the process stream is  

Solids removal from 1 to 1,700 microns • Single system flow rates up to 3,000 gpm (681 m3 /hr) • Smooth pipe and nozzle connection transitions to avoid dead  spots in the fluid stream and minimize pressure drop • Broad selection of filter media materials and retentions suitable  for a wide range of applications • Proprietary 3-way, full-ported valves allow fast, frequent  sequencing and maximum cleaning force during backwashing • Isolated top-to-bottom backwash flow ensures complete and  efficient media cleaning while continuing to deliver filtered  product downstream • Numerous automated backwash options for operator-free  service and minimal backwash effluent (<2% of system volume)