Lock Nuts

Pipe Fittings - 150# Malleable Iron Lock Nuts - NPSL

• Class 150 black pipe fittings are UL Listed and FM Approved at 300 psi
• Class 300 black pipe fittings are UL Listed
• Hot-dipped galvanized pipe fittings are certified to; NSF/ANSI 61-4 and California AB1953 Lead Free
• Malleable castings conform to ASTM A197, ASME B16.3, ASME B16.14 and ASME B16.39
• Hot-dipped galvanized fittings conform to ASTM A153
• NPT threads on all fittings for pipes conform to ASME B1.20.1
• Independent lab verification that fittings meet applicable chemical & physical properties
• Manufacturing facilities are ISO 9001:2008 and ISO 14001.
• Fittings are 100% air tested.
• Canadian Registration Numbers (CRN) available