APOLLO VALVES. Valve, Pressure Reducing, Material of Construction Lead Free Bronze, Inlet/Outlet 3/4 In., Single Union NPT X NPT Connection, Max. (F) 180, Height (In.). 6, Length (In.). 4-1/2, Certification NSF/ANSI 61 SECTION 8 2010 ANNEX F & G CA AB1953, VT ACT 193, Standards ASSE 1003/CSA B356, Compliance ARRA.