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

while the internal electromagnetic switch isolates and controls the higher voltage power exhauster motor

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

as a purely analog pneumatic gauge

High Carbon/Dust Capture: Efficiently traps large debris

Rheem-Ruud SP20166D Gas Valve 30067439-890 the VM3427 is specified forThe 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