Product Information Thread: NPT Select a Product Part Number Material Thread Size 300RHC25 300# Iron 1/4" 300RHC200 300# Iron 2" 300RHC75 300# Iron 3/4" 300RHC100 300# Iron 1" 300RHC125 300# Iron 1-1/4" 300RHC150 300# Iron 1-1/2" 300RHC38 300# Iron 3/8" 300RHC50 300# Iron 1/2" RHC125FS 3000# Forged Steel 1-1/4" RHC500 150# Iron 5" RHC100FS 3000# Forged Steel 1" RHC200 150# Iron 2" RHC38B 125# Brass 3/8" RHC75G 150# Galvanized Iron 3/4" RHC100B 125# Brass 1" RHC200FS 3000# Forged Steel 2" RHC50 150# Iron 1/2" RHC150G 150# Galvanized Iron 1-1/2" RHC25SS 150# 316 Stainless Steel 1/4" RHC400SS 150# 316 Stainless Steel 4" RHC100 150# Iron 1" RHC38SS 150# 316 Stainless Steel 3/8" RHC75B 125# Brass 3/4" RHC150SS 150# 316 Stainless Steel 1-1/2" RHC300 150# Iron 3" RHC50B 125# Brass 1/2" RHC150B 125# Brass 1-1/2" RHC25FS 3000# Forged Steel 1/4" RHC400G 150# Galvanized Iron 4" RHC25B 125# Brass 1/4" RHC50SS 150# 316 Stainless Steel 1/2" RHC125 150# Iron 1-1/4" RHC200SS 150# 316 Stainless Steel 2" RHC50FS 3000# Forged Steel 1/2" RHC75FS 3000# Forged Steel 3/4" RHC250 150# Iron 2-1/2" RHC400 150# Iron 4" RHC125B 125# Brass 1-1/4" RHC200G 150# Galvanized Iron 2" RHC38FS 3000# Forged Steel 3/8" RHC125SS 150# 316 Stainless Steel 1-1/4" RHC200B 125# Brass 2" RHC300G 150# Galvanized Iron 3" RHC50G 150# Galvanized Iron 1/2" RHC75SS 150# 316 Stainless Steel 3/4" RHC100G 150# Galvanized Iron 1" RHC18 150# Iron 1/8" RHC300SS 150# 316 Stainless Steel 3" RHC600 150# Iron 6" RHC38 150# Iron 3/8" RHC75 150# Iron 3/4" RHC25 150# Iron 1/4" RHC18G 150# Galvanized Iron 1/8" RHC150FS 3000# Forged Steel 1-1/2" RHC38G 150# Galvanized Iron 3/8" RHC150 150# Iron 1-1/2" RHC25G 150# Galvanized Iron 1/4" RHC125G 150# Galvanized Iron 1-1/4" RHC100SS 150# 316 Stainless Steel 1"