I have 2 seaswirls (1/2 inch size)for sale they are in perfect condition $100 each they sell for $150 on marine depot . I will include 1/2 inch barbed fittings .
it should if you use a hose clamp but you can probably just get a barbed fitting the proper size with 1/2 male threads on the other side to screw into the seaswirl
the seaswirl has 1/2 inch female threads on it