THis part is a Gray Waterfall Valve that is a Universal Valve with a shell hole size of 2" and a sleeve size of 1 3/4".
This kit includes The Valve with a Gray cap, and (2) Straight glue in barbs.
NOTE: We offer a kit with a 90 Degree Glue in Barb and a straight in another listing.
This valve has been used to control waterfalls, fountains and neck jets in a lot of hot tubs even though the cap may look different look at the dimensions and compare and this should work.
This valve has a fitting sleeve that fits through the shell of the tub with a nut on the back then the body of the valve pushes through the sleeve and you put the cap and the knob back on to hold it in place.