Mifab M1-500 M-500 PRESSURE DROP ACTIVATED TRAP SEAL PRIMER FOR UP TO 10 FLOOR DRAIN TRAPS, 1/2 IN. CONNECTIONS Brass

MIFABi?? MR-500, M1-500 & M2-500 Series pressure drop activated brass trap seal primer, with inlet opening of 1/2" male N.P.T. and outlet opening of female 1/2" N.PT. Complete with four view holes and removable filter screen. Requires no adjustments and no air pre-charge. MIFAB's Series of pressure activated trap seal primers (MR-500, M1-500 and M2-500) can be connected to any cold water line and will be automatically activated when a valve or faucet, that is on the line, is opened. A pressure drop of three p.s.i. will activate all of the trap seal primers. MIFAB's Series of trap seal prime