Image Cast Iron Foot Valve Markets Agriculture & Forestry, Construction Product Options Part Number Size Thread Material DFVS20 1-1/2" NPT Painted Cast Iron DFVS25 2" NPT Painted Cast Iron DFVS30 2-1/2" NPT Painted Cast Iron DFVS35 3" NPT Painted Cast Iron DFVS40 4" NPT Painted Cast Iron DFVS60 6" NPT Painted Cast Iron DFVS80 8" NPT Painted Cast Iron