DEMA Engineering 443P vs. The S-45 Solenoid Valve. A Distinction Without A Difference?

Currently, Hydrolevel uses the well supported DEMA Engineering 443P solenoid valve in their very excellent VXT water feeder for steam boilers. McDonnell & Miller still uses the poorly supported S-45 commodity solenoid valve. This video discusses a few of their similarities and differences.

Hydrolevel VXT McDonnell Miller DEMA Engineering 443P Solenoid Valve S-45 steam boiler water feeder,