1/2" MNPT x 1/2" Brass Quick Connect Male Nipple (2,200 PSI)

BST-N4M Unvalved Male Quick Connect Nipple from Parker's ST Series, designed for high-flow hydraulic and fluid applications. It features a 1/2" Male NPTF connection and a 1/2" Quick Connect Body Size

SKU: P-WAT-2170
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$28.99
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The Parker ST Series quick couplings are renowned for providing high flow capacity with minimal pressure drop, making them ideal for applications such as high-pressure water, steam washers, and commercial cleaning equipment. The P-WAT-2170 serves as the male quick connect component (nipple) for rapid, tool-free connection and disconnection of fluid lines.


Key features and benefits include:


  • High Flow, Low Pressure Drop: The smooth, straight-through, unvalved flow path maximizes fluid flow (up to 12 gal/min) and allows for easy cleaning, which is beneficial when the same line is used for multiple media.
  • Durable Construction: Made from Brass, offering good resistance to corrosion in various industrial and commercial cleaning environments.
  • High Pressure Rating: Suitable for demanding applications, rated for a maximum operating pressure of 2,200 PSI. The series overall is designed to handle pressures up to 6,700 PSI, but this specific brass nipple is rated at 2,200 PSI.
  • Quick Connection: Provides a fast and reliable connection mechanism when paired with a corresponding ST Series coupler.
  • Standard Sizing: Features a 1/2 inch Male NPTF pipe thread on one end and a 1/2 inch body size quick connect nipple on the other.

Technical Characteristics


  • Body Material: Brass
  • Temperature Range: -40°F to 250°F
  • Connection Thread Size: 1/2 inch - 14 NPTF
  • Hex Size: 0.88 inch
  • Manufacturer Part # (Mfr #): BST-N4M
  • Alternate Part Numbers: G4692554, 31A983
  • Series: Parker ST Series (Straight Through)
  • Product Type: Unvalved Male Quick Connect Nipple
  • Coupling Half: Male Nipple
  • Body Size: 1/2 in
  • Pipe Connection: 1/2 in Male NPTF (MNPTF)
  • Body Material: Brass
  • Maximum Operating Pressure: 2,200 PSI
  • Maximum Flow Rate: 12 gal/min
  • Maximum Operating Temperature: 250°F
  • Application: Hydraulics, High Flow, High pressure water, Steam washers
  • 2,200 PSI Brass: High-pressure rating for a brass fitting.
  • 1/2" MNPT x 1/2" QC: Connects standard pipe to a quick-disconnect line.
  • Unvalved, High Flow: Maximizes fluid transfer with low pressure drop.
  • Parker ST Series: Reliable hydraulic quick coupling series.

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