Item – Check Valves Check Valve, Flow Design Dual, Mechanism and Body Design Inline, Body Material – Valves Composite, Pipe or Tube Size 1 in, Connection Type FNPT x FNPT, Max. Temp. – Valves 180 Degrees F, Max. Steam Pressure – Valves Not Rated, Application – Valves General Purpose, Length 4 1/2 in, Standards Asse Listed 1024, Nsf Listed – Standard 61, Annex G