2 1/2" Femal NPT Inlet X 2" Male NPT Outlet, Set at 15" Hg vacuum, 646 SCFM Capacity, Cast Iron Body, Non-code Vacuum Air (SCFM) Relief Valve

3" Femal NPT Inlet X 3" Male NPT Outlet, Set at 14" Hg vacuum, 912 SCFM Capacity, Cast Iron Body, Non-code Vacuum Air (SCFM) Relief Valve

3" Femal NPT Inlet X 3" Male NPT Outlet, Set at 15" Hg vacuum, 936 SCFM Capacity, Cast Iron Body, Non-code Vacuum Air (SCFM) Relief Valve

NonCodeVacuumSet16" HG

VACUUM RELIEF VALVE

3" VacRlfVlv 19"hg 936scfm

NonCodeVacuumSet20"Hg 936SCFM

21PSI, 936SCFM

4" 150# 1000 GPM RELIEF VALVE

175 PSI 500 GPM