A more than adequate diaphragm pump to build your own sea kayak foot pump system off of your forward bulkhead.
These pumps are made by Guzzler with an after market arm that can be perfect to press with your foot. With a little ingenuity to make a foot push plate and a mounting bracket to fasten to your forward bulk head. With the 1 inch intake and discharge on the same side this makes your pumping easier to fit up into your sea kayak. With 10 Gal / Min and 7 Strokes / Gal this pump can empty your cock pit fast. Weight estimated to be 1/2 pound.