hard to say without a picI actually have the full schematics on this and they are not listing this individual part.
I have the Valve that screws into this for the intake and out. It is the actual Piece
that you see that Screws into .. They are not easy to remove btw. They have these little Claws that you have to pry apart to dislodge .. Each one is threaded to accept the on and off shut off Valves that go into it..
Didn't even think of that....I have been known to hacksaw apart a spare double tap connector to remove that piece and then push it onto the part I want to repair. Its a tight fit.
So if its the same piece thats on a double tap, its cheaper to buy the double tap and destroy it to retrieve the piece than it is to buy a new pump head.