0257F00172S | HEAT EXCHANGER | Amana-Goodman Pressure Range_-30 to 0 to 30PSI Relay 903: General-Purpose Control for

0257F00172S HEAT EXCHANGER Amana Goodman Pressure Range_ 30 to 0 to 30PSI Relay 903: General Purpose Control for Relay 903: General Purpose Control for HVAC Applications Mars Controls' Relay 903 is a single pole Features: Automatic air venting to improve system efficiency Service check valve to prevent water loss during maintenance 1 8 inch brass male NPT connection for secure installation Pressure rating of 150 PSI and temperature rating of 230 degrees Fahrenheit Compact design for easy installation and maintenance Benefits: Eliminates air pockets and ensures optimal heating performance Prevents system corrosion and wear Facilitates easy maintenance and replacement Durable construction for long lasting use Order your Hydronic Caleffi Air Vent MinCal Automatic with Service Check Valve (502115A) today and experience the benefits of improved heating efficiency and reliability