The MIFAB® MI-300-ENC Series enclosed electronic trap seal primer system with copper air gap, electrical stainless steel body 1/2" solenoid valve, plastic manifold with distribution ports and fabricated steel, white powder epoxy coated enclosure box. Electronic components to include single point power connection at 120VAC, 220 VAC or 24VDC, manual override switch, 5 amp breaker, 24 hour timer with relay and adjustable delay. The entire assembly is tested and certified to the ASSE 1044 Standard. 100 p.s.i. operating pressure.