• hpcouplers ST-4MSS 1/2" Male NPT Straight-Thru Hydraulic Quick Coupler, Foster FST / Dixon E-Series
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hpcouplers

1/2" Male NPT Straight-Thru Hydraulic Quick Coupler, Foster FST / Dixon E-Series Interchange, Stainless Steel, 3,000 PSI | hpcouplers ST-4MSS

1/2" Male NPT Straight-Thru Hydraulic Quick Coupler, Foster FST / Dixon E-Series Interchange, Stainless Steel, 3,000 PSI | hpcouplers ST-4MSS

$66.49 USD
$66.49 USD
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Sold and shipped by Industrial Supply World from our warehouse in Elgin, Illinois.

Low stock: 1 left

The hpcouplers ST-4MSS is a 1/2" Male NPT Straight-Thru hydraulic quick connect coupler with 1/2" Male NPT threads. It follows Foster FST / Dixon E-Series style straight-through, so it mates with any Straight-Thru plug from Foster, Breco or Dixon. Stainless Steel body, unvalved straight-through flow, rated to 3,000 PSI and -40°F to +225°F.

  • 1/2" Male Npt Straight-Thru Hydraulic Coupler: hpcouplers ST-4MSS is the 1/2" Male NPT coupler half of a Foster FST / Dixon E-Series style straight-through quick connect. Mates with any Straight-Thru plug, including Foster FST, Breco ST and Dixon E-Series style.
  • Rated To 3,000 Psi: Stainless Steel body with unvalved straight-through flow. No valve means full flow and minimal pressure drop. Shut the line off before disconnecting.
  • 1/2" Male Npt Thread: Threads straight onto 1/2" pipe or hose fittings. No adapter needed on most water, coolant and transfer lines.
  • Straight-Through Flow Path: Working temperature -40°F to +225°F with Buna-N seals. Push-to-connect sleeve with a ball-lock ring.

Not sure which interface or size you have? Email support@industrialsupplyworld.com with a photo of the mating half and we will match it.

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OUR VERDICT

A full-flow straight-thru quick-connect for lines where pressure drop matters more than shut-off: test ports, high-flow air, water and fluid transfer. Shut the supply off before disconnecting. Mates with Foster FST and Dixon E-Series halves of the same size.

WHAT WE LIKE
  • Full-bore flow, no valve to restrict the line
  • Foster FST and Dixon E-Series interchange
  • Brass or steel body, simple and rebuildable
WORTH NOTING
  • No shut-off: the line is open when disconnected
  • Only couples with same-size straight-thru halves
Specifications
SeriesStraight-Thru (Foster FST / Dixon E interchange)
Temperature range-40°F to 250°F
Max working pressure3000 PSI
InterchangeStraight-Through
ComponentCoupler (socket)
Body size1/2"
Body material303/304 Stainless
Seal materialBuna-N (NBR)
Socket actionManual sleeve
ValvingStraight-through (unvalved)
Straight-ThroughFull interchange lookup →

Complete the connection

This is a coupler (socket) in the Straight-Through profile. It only mates with Straight-Through plugs (nipples) — any brand.

Shop matching plugs (nipples) →