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High Pressure Screw Couplings

High Pressure Screw Connect Ball Couplings Made to the ISO 14540 Standard

Holmbury’s PSB Series screw connect couplings are designed primarily for high pressure applications. They can be connected under low residual system pressures. The couplings are available with ball or poppet style valves.


  • Carbon steel with trivalent plating
  • Fitted with Polyurethane & Nitrile seals
  • Screw connect design eliminates brinelling
  • PSB offers ball style valve
  • Can be connected with low residual pressure in the hydraulic circuit
  • Bidirectional flow
Description Thread Size Working Pressure Flow Rate Temperature Range Price (exc VAT)
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Screw Probe
3/8 NPT Female720 Bar15 L/min-20°C to + 100°C £10.60
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Screw Coupling
3/8 NPT Male720 Bar15 L/min-20°C to + 100°C £21.20