Spalding balls will have an inflation guide printed around their inflation valves. They are marked in pSi (pounds/square inch) and should never be exceeded. Generally, they are 7 to 9 pSi
1 pSi = 6.9 kPa
Spalding balls will have an inflation guide printed around their inflation valves. They are marked in pSi (pounds/square inch) and should never be exceeded. Generally, they are 7 to 9 pSi
1 pSi = 6.9 kPa