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Palmer Wahl Needle_Valves | Gauge Needle Valves | 1/4 in NPT, up to 6,000 psi
Palmer Wahl needle valves give precise regulation of flow, either shutting off a pressure gauge or holding a steady flow rate. Brass valves with a hard seat are rated to 3,000 psi at 100 °F, while carbon steel valves with a chromate finish and soft seat are rated to 6,000 psi at 200 °F. Both have female-female 1/4 in NPT connections and a screwed bonnet.
Key features
- Externally adjustable, wear-compensating virgin PTFE stem packing
- Screwed bonnet design
- Temperature rating -65 to 200 °F (-54 to 93 °C)
- Flow coefficient 0.40 Cv (globe/angle) or 0.90 Cv (block)
- Specifications
- Downloads
| Part Number | Needle_Valves |
| Brand | Palmer Wahl |
| Material | Brass; carbon steel with chromate finish |
| Seat | Hard (brass); soft (carbon steel) |
| Connection | Female-female, 1/4 in NPT |
| Bonnet | Screwed |
| Stem Packing | Virgin PTFE, externally adjustable |
| Pressure Rating (Brass) | 3,000 psi (207 bar) at 100 °F |
| Pressure Rating (Steel) | 6,000 psi (413 bar) at 200 °F |
| Temperature Rating | -65 to 200 °F (-54 to 93 °C) |
| Flow Coefficient | 0.40 Cv (0.187 in orifice); 0.90 Cv (0.312 in orifice) |
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