A multi-stage control valve (400.64) that throttles high pressure in several steps to avoid cavitation. A parabolic plug with up to 5 stages lowers the pressure step by step. It has a forged steel angle or Z-style body, sizes from 2" to 8" and pressure ratings from ANSI Class 400 to 2500.


| Series | 400.64 |
| Size | 2" to 8" |
| Pressure Rating | ANSI Class 400 to 2500 |
| Body Type | Angle or Z-style |
| Body Material | Forged steel |
| Plug | Parabolic plug with up to 5 stages |
| End Connection | Flanged or buttweld ends |
| Actuation Type | Electric, pneumatic or hydraulic |