Ravenheat 5009057 expansion vessel

Product Information: 
The expansion vessel is a tank that is utilized to protect closed water systems from pressure surges. The tank is filled with air that acts as a cushion against pressure surges within the system.

This Part Fits:
Ravenheat RSF 84
Ravenheat RSF 84ET
Ravenheat RSF 100E
Ravenheat RSF 100ET
Ravenheat RSF 820/20T