Comparison : Item # H3EVXBG023C, 4-Way 2-Position 110V Single Solenoid Valve
Item # H35VXBG023C, 4-Way 3-Position 120VAC Double Solenoid Valve
Item # S0025, 1 1/2" Double Bulkhead
Item # S0012, 3/4" Double Bulkhead
Item # S0014, 1" Double Bulkhead