This will not work so good for you. As it's 2 different products the Foam Gun and a Foamcannon. The orifice or if it's any in the foam gun it's too big to be used with a PW. So you would get less foam than from the hose if you do couple it together with the PW. Get you a foamcannon and you will be getting a great foam from the foamcannon and PW. Just a friendly advise.