This valve is no longer manufactured. As a replacement you can use the following one pump valves:
Slingshot One Pump Valve:
https://pksdistribution.com/proddetail.asp?prod=fmk_slingshot_one_pump_valve
F-One Straight One Pump Valve:
https://pksdistribution.com/proddetail.asp?prod=fmk_fone_straight_one_pump_valve

All new material for 2020. A higher density and more stable material to prolong the life of the valves is now being used.

The Ozone Straight Pump valve is the original factory valve for 2014 and newer Ozone kites with a one-pump system. Low-profile shape will also retro-fit onto any 2007-2013 Ozone kite with a one-pump system. This valve is also a compatible replacement for Slingshot, 2013 Crazyfly, Star, Flexifoil, Mutiny, and Ben Wilson kites.

Fixmykite.com Self-Stick-Valves will stick on all bladders.  Simply peel and stick to make a fast and easy repair, or stick it on any new bladder.  Specially formulated adhesive is incredibly durable and will stick on any bladder material or color.

The One Pump Self-Stick-Valve will fit any standard One Pump system.