- Specifications
- Description
- Air separator
- Expansion tank
- Combination fill valve and backflow preventer
This 1 1/4 inch boiler trim-out package is used for commercial and residential closed loop hydronic heating systems. The package includes an DUO Vent, air separator, SCV 1/8 inch service check valve, combination fill valve and backflow preventer, RBFF, ET-15 and B911S.