Brass stop valve 1)good price with high quality 2)deliver in time 3)10-year-experience in valve industrial Stop valve1. size:1/2 ... . Nut Brass nut,Steel nut,Iron nut,all Zinc plated.Connection Theaded ISO228,BSP,NPT,UNION.3.Technics: Forged.4.Guaranty ... ,Surface: brass color, yellow color6,certrification: CE ISO9000:2000 Brass stop valve