Used on flojet "quad ii diaphragm" 4405 series automatic water system pump with internal bypass valve. quick connect quad port x 3/4 hose barb 90 degree elbow
Used on 5419-01-539-7177; exped tr sys. 0em part number 6011-n; bee valve, 1150 taylor st, elyria oh 44035, phome 440-366-0220; no cage npt 1st end thread series