The unit features silver cadmium oxide contacts to provide superior conductivity and resistance to pitting under high-cycling conditions

the VM3427 is specified for hot or chilled water and glycol solutions (up to 50%) and is not rated for steam service

For maximum adhesion

Automatic Reset Logic: Eliminates unnecessary manual interventions by restoring circuit continuity once safe operating temperatures are reached

Consistent Ignition Performance: Maintains the ignition spark gap required for clean combustion and reduced soot buildup

Rheem-Ruud SP20166D Gas Valve 30067439-890 The unit features silver cadmiumThe Rheem Ruud SP20166D Gas Valve is an essential OEM service component designed for high performance natural gas water heater repair. This combination gas control valve features a standard 1 2 inch NPT inlet and a 1 2 inch NPT outlet, factory set for a 5. 0 inch water column (WC) manifold pressure to ensure precise fuel regulation. Engineered for Robertshaw gas valve replacement applications, the SP20166D integrates a built in high limit energy