*Clamp Lock is designed to allow 360 degree rotation to simplify installation *Top diffuser ensures even distribution of water over the sand bed *Large pressure sand/water drain for rapid winterizing or servicing *Materials used are dependable and are suitable for all-weather performance *Easy-to-use Multiport Value lets you select any of the valve/filter operation with simple lever-action *UV-resistance surface allows the filter to work under direct sunlight *Maximum working pressure: 250kPa(36psi) *Maximum testing pressure: 400kPa(36psi) *Maximum water Temperature: 43oC(109oF) *Maximum filtration velocity: 50m3/h/m2