4A-NSL-BN-SS-K Parker N Series Metering Valve

$190.91 / Each
  • Handle Type: Knurled
  • Interchanges With: SS-SS4
  • End 1 Type: Double Ferrule Compression
  • Seal Material: Buna-N
  • Temperature Rating: -50°F to 300°F (-47°C to 149°C)

Parker A-LOK N Series Metering Valve, 1/4" Compression A-LOK®, NSL Valve Series, Inline Configuration, 1 Stem Type, Buna-N Rubber Packing, Stainless Steel Body, Knurled Operated.

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Product Description

The Parker NS Series of metering valves are designed to provide accurate and stable control of flow rates in analytical, instrumentation, and research applications. A variety of connection sizes, body patterns and materials of construction provide considerable application versatility. For higher flow rates, refer to the NM and NL Series of metering valves.


  • Precisely tapered valve stem accurately controls flow
  • Brass or 316 SS forged body construction
  • Panel or in-line mounting
  • Positive handle stop prevents overtightening
  • Angle or in-line patterns
  • Valve stem threads not in contact with process fluid
  • 100% function tested
  • Optional stem seals and handles

Dimension Drawing

Interchange Disclaimer

Parker guarantees that all A-LOK® fittings (including A-LOK® ended valves) are of equal quality to and will perform as well as the Swagelok fitting. Parker guarantees that the A-LOK® fittings are completely interchangeable with all sizes of the Swagelok fittings and individual components of the A-LOK® fittings can be intermixed with the components of the Swagelok fitting including the new and old rear ferrule. In fact, since 1984, thousands of customers have successfully used the A-LOK® fittings in conjunction with the Swagelok fitting.