I went cheap with this one from Amazon. https://www.amazon.com/dp/B074NZY3SQ?ref_=ppx_hzsearch_conn_dt_b_fed_asin_title_4 Plugs into 110 or 12 volt. Works great on my Outcast Scout and I top it off with a small K Pump. I shortened the larger nozzle so it would fit into the valve.