Adaptor for CPAP hose to Pumps with 1/2 BSP

For years, I’ve been using a submersible aquarium pump to flush my CPAP hoses by connecting them to the pump and immersing them in a cleaning solution. I leave them there for about 12 minutes.

Now, I’ve designed an adapter that makes optimal use of my pump’s connector.

I’m sharing two versions:

1. an adapter into which I can plug my ResMed hose, and, 
2. one that fits inside any standard CPAP hose.

The thread should fit any connection with a 1/2” BSP thread.

If you have suggestions for improvement – please let me know!

The pump I use: https://www.amazon.de/dp/B014MB5Q7Y?ref_=ppx_hzsearch_conn_dt_b_fed_asin_title_3&th=1