Reducing Adapter, 316 Stainless Steel, 1/4 in FNPT x 1/4 in Male BSPT, 6, 200 psi MPN:4-4K RA-SS

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Brand: Parker
Part #: 4-4K RA-SS
SKU
510-G6221521
$94.58 for Order Qty of 2
Regular Price $66.21 Special Price $47.29

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Reducing Adapter, 316 Stainless Steel, 1/4 in FNPT x 1/4 in Male BSPT, 6, 200 psi

The Parker 4-4K RA-SS stainless steel reducing adapter is a versatile solution for connecting pipes or fittings of different diameters. Designed for use with air, natural gas, and oil, this adapter provides a seamless transition from a larger bore to a smaller bore, ensuring efficient and reliable fluid transfer. Its corrosion-resistant 316 stainless steel construction and robust design make it suitable for high-pressure applications, withstanding temperatures from -425 to 1200 °F and pressures up to 6,200 psi. Ideal for use in industrial, commercial, and residential settings, this adapter is a reliable choice for a wide range of applications, including HVAC, plumbing, and process piping.

Top product features:

  • 316 Stainless Steel construction for corrosion resistance and durability
  • Female NPT connection on one end and male BSPT connection on the other for versatile piping configurations
  • Rated for operation at temperatures from -425 to 1200 °F and maximum operating pressure of 6,200 psi for reliable performance in various applications

Top product applications:

  • Connecting pipes or fittings of different diameters
  • Transitioning from a larger bore to a smaller bore
  • Providing a connection between a female NPT and a male BSPT pipe or fitting

The PARKER - 4-4K RA-SS is a stainless steel reducing adapter designed to connect pipes or fittings of different diameters and provides a transition from a larger bore to a smaller bore. Made from 316 stainless steel, it has media compatibility: air, natural gas, and oil. The adapter features a female NPT connection on Side A and a male BSPT connection on Side B, both with a nominal pipe size and outside diameter of 1/4 inch. It meets ANSI B31.1 and ANSI B31.3 standards and rated for operation within -425 to 1200 °F, maximum operating pressure: 6,200 psi. Key Features:

  • - Material: 316 Stainless Steel
  • - Connection types: Female NPT x Male BSPT
  • - Nominal Pipe Size: 1/4 inch on both ends
  • - Maximum Operating Pressure: 6,200 psi
  • - Temperature Range: -425 to 1,200 °F
  • - Hex Size: 3/4 inch across flats for wrenching
  • - Standards Compliance: ANSI B31.1, ANSI B31.3
  • - Color: Silver
  • - Includes no pre-applied thread sealant or additional sealing components


Additional Information

  • Country of Origin: US
  • Drop Ship Item: No
  • Blind Ship Eligible: No
  • LTL Freight Required: No
  • Lead Time: Ships in 1 days
  • Minimum Order Quantity: 1
  • Unit of Measure: EA
  • Package Length: 3.63
  • Package Width: 2.69
  • Package Height: 1.00
  • Package Weight: 0.15
Product info last updated on February 12, 2026 6:50pm UTC Category: Pipes, Valves and Fittings
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In stock