This should get you started.
The shop I got the Chinese valves from is no longer there but similar valves can be found at:
https://world.taobao.com/item/520288996006.htm
https://item.taobao.com/item.htm?id=520376361352
https://item.taobao.com/item.htm?id=18720652339
https://item.taobao.com/item.htm?&id=17665788738
or search for for PU220AR-02 and look at the cheaper valves.
Remember to double check the voltage required.
Nozzles:
https://item.taobao.com/item.htm?id=15180075567
https://item.taobao.com/item.htm?id=535982773412
and remember to check the screw size.