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Stronghold 20 Plugs

The 4ST range of couplings and plugs are used as industry standard on all leading medium pressure cleaning systems. The principle of the design is a straight through fluid path causing minimal turbulence, so that fluid flow rates and foam quality are kept to their optimum as they travel into the hose.

Brand : Stronghold
Pressure : Medium Pressure

This product is designed for Medium Pressure Systems of 10-40 Bar

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SKU: P-1627 Categories: ,



  • Robust Stainless Steel construction
  • Industry Standard coupling system type
  • Ease of operation
  • Male and Female thread configurations available
  • Coupling also available with Screw Shroud to prevent accidental release
  • Replacement O-Ring seals available

Technical Datasheet

  • Max System Pressure: 80 Bar
  • Max System Temperature: 90°C
  • Rated Pressure: 248 Bar
  • Rated temperature range: -40°C ? 121°C
  • N.B.: Rated pressure and temperature ranges refer to the coupling only, and not to the complete hose, lance, gun or other assembly.
  • Rated pressure and temperature in this case is dependent on the installation or clamping method used.
  • Material: 304 Stainless Steel.
  • Flow Path: 1/2″ (unless supplied with 3/8″ or 1/4″ thread sizes)

Additional information


1/4", 1/2", 3/8"