Weil McLain 383-500-628 Transformer The stem features a 1/4-20

The stem features a 1/4-20 inch NPT end for the valve connection and a 5/16-18 inch NPT end for the float bulb

Contamination Protection: A built-in filter pad and screen safeguard the indicator from turbulence and debris

Preventative Compressor Protection: Stops operation before liquid slugging can occur due to low evaporator temperatures

always verify your control voltage before installation

Does this gasket require additional RTV sealant for installation

Weil McLain 383-500-628 Transformer The stem features a 1/4-20The Weil McLain 383 500 628 Transformer is a heavy duty, factory specified 120V to 24V step down transformer designed for critical power distribution within high efficiency hydronic systems. This 50VA boiler transformer provides a stable 24VAC secondary output, ensuring consistent low voltage signaling for the Weil McLain Ultra boiler control board and ignition sequences. As a direct replacement for the legacy 511 802 011, it is engineered to handle