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The 338 series needle valve bi-directionally meters the flow of air through the valve. The perimeter of the adjustment knob features position markings and an internal fine taper needle, providing precise flow control even at low flow rates.
The Parker 338 Series Needle Valve is a bi-directionally metered valve that provides efficient and precise flow control and adjustment even at low flow rates. The plunger in these valves is a fine taper needle which provides precise flow control even at low flow rates. The perimeter of the adjustment knob features numerical micrometer position markings, providing a visual indication of the flow controls settings. Once the desired flow is selected, a set screw can be tightened to maintain the settings. Extended Temperature versions up to 300 degrees F are available as specials.
Markets:
• Factory Automation
• Heavy Industries
Features/Benefits:
• Precise Low-Flow Control
• Heavy duty brass construction
• Micrometer visual set points
Applications:
• General purpose industrial pneumatics
• Industrial equipment requiring motion of work to stop slowly at the end of operation
| Selector Guides |
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| Pneumatic Calculator |
| Literature and Reference Materials |
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| 0600P Catalog_Accessories |
| MRO Pneumatic Airline Accessories Catalog |
| Products | Port Type | Port Size (inch) |
|---|---|---|
| 003381100 | NPT | 1/8 |
| 003381101 | NPT | 1/4 |
| 003381102 | NPT | 3/8 |
| 003381103 | NPT | 1/2 |
| 003381104 | NPT | 3/4 |
| 00338G1100 | BSPP | 1/8 |
| 00338G1101 | BSPP | 1/4 |
