1/4" thread
  Model Number:PH-10-Maifan
1. Outer diameter: 2-1/2’’ ,4-1/2’’ ,2’’
2. Inside diameter: 28mm 1/4’’
Max operating temperature:52°C
Max operating pressure:2.4 Bar
Name: High quality maifan stone mineral ceramic ball for water treatment filter
Size: Φ3-25mm
Color: Light Brown
Material: Maifanite powder
Production: 1050 degrees high temperature sintering
Function: Increase plenty of  K,Ca,Mg,Si,Fe,Zn,Cu,Mo,Se,Mn,Sr,Ni,V,Li,Co,Cr,I,Ge,Ti,ect...   
The actual replacement time is based on local water quality