Lochinvar & A.O. Smith 100109724 Valve 320074-702 including LH33WP003 and LH33WP003A

including LH33WP003 and LH33WP003A

The external equalizer compensates for the pressure drop across the evaporator and distributor

verifying this aquastat controller against the 100170632 interchange ensures long-term system stability and eliminates calibration drift often found in generic aftermarket equivalents

this 120V to 24V step-down transformer features a compact footprint and robust internal lamination to minimize mechanical hum and inductive losses

Lochinvar & A.O. Smith 100109724 Valve 320074-702 including LH33WP003 and LH33WP003AThe Lochinvar & A. O. Smith 100109724 Valve is a direct fit OEM replacement gas control designed specifically for high efficiency water heaters and residential power vent boiler systems. This natural gas valve operates on a 20V ignition circuit, featuring a 1 2" NPT inlet and a factory set 4" WC manifold pressure to ensure precise fuel to air ratios and stable combustion cycles. Engineering specifications for the 100109724 include a 1 1 4" shank