Is there a 22AWG contact for the PH series?

Yes. There is a contact for the PH series that will work for 22AWG wire. The part number is SPH-001T-P0.5S. It has an AWG range of 26 to 22 with an insulation outer diameter range of 0.9 to 1.5mm. For 26 and 24 AWG, JST suggests using UL1007 wire. For 22AWG, we suggest UL1061 or UL1571.