The U Series is an instrumentation needle valve in three sizes (U6, U12, U16) with in-line and angle patterns. The stem type is blunt or regulating, packing is PTFE or Grafoil, and the body is stainless steel. It is ordered with CPI/A-LOK tube fitting connections.
| Pressure Rating | 6000 psig (414 bar) CWP |
| Temperature Rating | PTFE packing -65°F to 450°F (-54°C to 232°C) / Grafoil packing -65°F to 700°F (-54°C to 371°C) / Grafoil packing with HT option -65°F to 1200°F (-54°C to 649°C) |
| Orifice | .177" to .437" (4.5 mm to 11.1 mm) |
| Cv Value | .53 to 3.55 |
| Series / Pattern | U6, U12, U16 / in-line (L), angle (A) |
| Stem Type | Blunt (B), regulating (R) |
| Stem Packing | PTFE (T), Grafoil (G) |
| Body Material | Stainless steel |
| End Connection | CPI/A-LOK tube fittings (inch and metric; other threads in Catalog 4230/4233) |