Features:
1.Made of fiberglass reinforced laminated polyester.
2.Smooth and high brightness appearance
3.Automatic air bleed with manual safety pressure release
4.6way multiport valve
5.Large clear lock ring sealed lid for easy interior viewing and media installation/removal
6.Sight glass for inspection of filtered water
7.Easy maintenace,easy to clean

Functions
1.Maximum working pressure : 250kPa/36psi/2.5bar 
2.Factory Testing Pressure     400kPa/58psi/4.0bar
3.Maximum Water Temperature  500 C
4.Size of Gravel             1mm-2mm
5.Size of Silica Sand          0.5~0.8mm

Application: 
*swimming pool and spa 
*aguiculture 
*industrial water treatment.