Push Bottom Assembly, For Use With Various Elkay and Halsey Taylor Water Coolers, For Use With Mfr. Model Number HRF, WM, S300, S500, S1000, FD, OVL, HOF, HAC, HTV, HVR, VRC, EFA, EFHA, EMABF, EHFSA, EFW, LMABF, LFAE, EZ, LZ, HEW,, For Use With Item Number 4XR84, 4XR85, 2W188, 2W191, 2W154, 2W155, 2W156, 4MY90, 2KLD9, 6XUY9, 2KLE2, 2KLE3, 2KLD8, 2KLD7, 4MY91, 2KLF1, 3EMY9, 3EMY7, 3EMY6, 3EMZ1, 3EMY8, 4CE97, 4CE98, 1MCE5, 2KLF1, 2KLF2, 4NE43, 1PX54, 1PX55, 3H032, 3H016, 1MCE4, 2KLF3, 3EMZ3, 2KLE9, Fits Brand Elkay & Halsey Taylor, Material Brass,Valox, Rubber, Celcon, Steel, Includes Cover, Button ,Hex Nut, Regulator Holder, Regulator Cartridge, Retaining, Nut