Manual air relief for easy, manual release of air from system
Efficient, multilateral underdrain assembly with 360 slotted, self-cleaning laterals, gives totally balanced flow and backwashing
Integral top diffuser ensures even distribution of water over the top of the sand media bed
Automatic air relief purges any trapped air during operation of the filter system
Totally corrosion-proof base is rugged and attractively styled to provide strong, stable support
Unitized, corrosion-proof spherical filter tank is molded of rugged, color-fast polymeric material for maximum strength
Integral molded drain plug for easy draining of tank, without the loss of sand
Durable flanged inspection/access cover provides convenient access to top of filter
