An orifice holder includes a body defining inner wall portions facing each other and spaced apart at a first distance for receiving a portion of a stem of a spreader therebetween. The body further defines a first cup and a second cup, each extending outwardly from opposing sides of the inner wall portions. Each of the first cup and the second cup has a peripheral rim extending around an upper perimeter thereof and open at respective adjacent ends of the inner wall portions to define a fluid path past the peripheral rims, through the respective first and second cups, between the inner wall portions, and into the stem.