Honeywell RP670B1009 DPDT 2-Position Pneumatic Switching Relay 3-7 PSI

The Honeywell RP670B1009 pneumatic switching relay that is used to switch the air in HVAC systems. It works within pressure range of 3-7 PSI and used a DPDT switching action. This means it can control two different circuits at the same time and therefore can perform complex control sequences and system arrangements. The relay gets a pneumatic signal from a controller or sensor and in turn switches on or off the air valves or other pneumatic equipment. It allows for control of air movement patterns with optimal performance and efficiency of the system.