stainless steel sand filter 1)Quartz Sand Water Filter Introduction Quartz sand filter is also called pressure sand filter, for it filtrates water by passing pump with 0.6 MPa pressure. It can be divided into uniflow type and double-flow type. The water flows in former from upper to lower and in latter inversely. By filter material, it can be divided into monolayer and double-deck or multi-deck mechanical filter. The equipment applies for pre-treatment in ion exchanging water soften system and desalting system, wastewater filtrating, industrial supply rough filtrating and swimming pool water filter system, etc. Particle size of the filter material is decided by water quality. For pre-treatment in desalting system, quartz sand is 0.5-1.0mm; anthracite is 1.2-1.6mm. 2)Quartz Sand Filter Equipment Specification