M3-500-NPB

MIFAB® model M3-500-NPB pressure drop activated brass trap seal primer, with inlet opening of 1/2" (13) male N.P.T. and outlet opening of female 1/2" (13) N.P.T. Complete with four view holes, adjustment screw for variable water delivery and removable filter screen. Serves up to 10 floor drain traps and has no air pre-charge.