For optimum performance, inflate your Sherrin to the recommended kPa as stipulated around the mouthpiece of your Sherrin.
1. Sherrin balls will have a recommended inflation unit printed around their inflation valves ie 69kPa, 45kPa, 30kPa, 25kPa etc
2. This metric pressure unit is kPa (kilopascal). NOTE: Be careful to not confuse psi (pounds square inch) with kPa as psi has roughly 10x more pressure than kPa and will rapidly and easily damage your ball. (Note: 6.9 kPa = 1 pSi)
3. This is not a guide this should be considered a maximum. If you exceed the recommended inflation you risk damaging the stitching and also voiding the warranty
4. If you do over-inflate a ball, release the pressure immediately. It may not be apparent just by looking at the ball that it is over-inflated, another sign is if it is hard to the touch, after use, the stitching can possibly give way
5. Over-inflation can cause your Sherrin to go out of shape and lead to malfunction.
6. Ensure to lubricate the needle before you inflate the ball each time
7. If using a hand pump make sure to place the ball on a flat surface as the needle can heat up and bend or snap off if weight is put on it
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