Parker Pneumatic
337 Series Micrometer Flow Control Valves 1/8
337 Series Micrometer Flow Control Valves 1/8
Key Features
- Micro-fine Adjustment
- Heavy Duty Brass
- Locks with set screw
- NPT - 1/8-3/4"
- BSPP - G-1/8-1/4
The “337” Series Flow Control Valves meter flow of air in one direction and allow free flow in the reverse direction.
The “337” Series valves are manufactured with a fine tapered needle providing 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 setting. Once the desired flow is selected, a set screw can be tightened to maintain the setting.
These valves are available with NPTF ports in 1/8",
1/4", 3/8", 1/2", and 3/4" sizes. This series is recommended
for pneumatic service.
Valve Specifications
- Maximum Operating Pressure: 250 PSI
- Cracking pressure for return check poppet: 1 to 2 PSIG
- Operating Temperature: Standard: 0° to 180°F*
- Extended Temperature: 0° to 300°F* (consult factory)
Component Materials
- Body Material................................................................Brass
- Needle ............................................................Stainless Steel
- Check Seal.............................................................. Urethane
- Needle Seals..............................................................Buna N (Fluorocarbon optional – consult factory)
- Knob .......................................................................Aluminum
- Spring.............................................................Stainless Steel
- Retainer..................................................... Zinc- Plated Steel Set
- Screw.......................................................................Steel
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