Robertshaw 5500-213M Switch R-448A Engineered with a 1/4" barbed

Engineered with a 1/4" barbed vacuum connection

providing excellent hermetic tightness and compatibility with all fluorinated and natural refrigerants

Combustion Stability: Eliminates the risk of pressure fluctuation and "hunting" that can occur when using non-spec or generic conversion springs

While it features a 3/8" NPT vent connection

As a direct replacement for part number 9009197005

Robertshaw 5500-213M Switch R-448A Engineered with a 1/4" barbedThe Robertshaw 5500 213M Infinite Switch is a heavy duty, voltage sensing replacement control engineered for precision management of resistive loads in industrial and commercial heating equipment. As a direct M Series 240V infinite switch upgrade, this unit replaces the discontinued VSI (INF) models and the Robertshaw 5500 213. It features a 22. 5% low end input capability, making it ideal for applications requiring consistent, proportionate heat