Model 123

Description

The Model 123 is a relief regulator suitable as a back pressure regulator or bypass valve for controlling inlet pressure between 2 and 350 psig (.14 to 24.2 Barg) (525 psig (36.2 Barg) at 50% build-up). The body has an angle configuration with a side inlet and a bottom outlet. Sizes are 1/2", 3/4", 1", 1-1/2" and 2" (DN15, 20, 25, 40 and 50). Available options include cryogenic construction, NACE construction and a large selection of trim, body and diaphragm materials. It is the most adaptable back pressure/relief regulator Cashco manufactures.

Inlet Design Pressure

• Up to 525 psig (36.2 Barg)

Outlet Pressure

• 2 psig (0.14 Barg) to 350 psig (24.1 Barg)

Line Sizes

• 1/2" (DN15)
• 3/4" (DN20)
• 1" (DN25)
• 1-1/2" (DN40)
• 2" (DN50)

End Connections

• Standard: NPT female pipe thread
• Alternate: See Opt-30, -31P, -32 or -39 for flanged, extended nipples or socket weld end connections.

Material Combinations: Body / Spring Chamber

• CI/CI
• BRZ/CI
• BRZ/BRZ
• CS/CI
• CS/CS
• SST/CI
• SST/BRZ
• SST/CS
• SST/SST

CI – Cast grey iron
BRZ – Cast bronze
CS – Cast carbon steel
SST – Cast stainless steel

Features

• Versatile: Five body materials & twenty three trim material combinations allow compatibility with most fluids.
• Controlled Compression Composition Seats: Four composition seat materials are available and all use controlled compression with metal to metal back up for long, trouble free life.
• High Capacity: A large orifice and diaphragm provide sensitivity with high capacity.