Model 4381

Description

The Model 4381 is a stainless steel pressure reducing regulator designed to handle small to mid-capacity flow rates in general, chemical, or cryogenic services. This unit is capable of controlling outlet pressure to a level between 2 and 500 Psig (.14 and 34.5 Barg).

Inlet Design Pressure

• Up to 1500 psig (103 Barg)

Outlet Pressure

• 2-500 psig (0.14 - 34.5 Barg)

Line Sizes

• 1/4" (DN8)
• 3/8" (DN10)
• 1/2" (DN15)

End Connections

• NPT: 1/4", 3/8", 1/2" (DN8, 10, 15)
• Opt-30 or -34: 1/2" x 150#, 1/2" x 300#, or 1/2" x 600# RF Flanges or with 3/4" or 1" Reducing Flanges

Material Combinations: Body / Spring Chamber

• Wrought Barstock
• SST
• BRZ
• ALBRZ

Wrought Barstock ASTM A479 316L 
SST = Cast Stainless Steel ASTM A351 CF8M
BRZ = Cast Bronze ASTM B62 C83600
ALBRZ = Cast Aluminum Bronze ASTM B-148 C95500

Features

• Trim Removal: Easily removable trim from regulator while in-line
• Trim Selections: Thirteen different trim combinations for metallic or composition seated designs.
• End Connections: NPT and flanged.