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Black polymer quick-connect socket with ball valve, 1/4 in body, 3/8 NPT thread

Legris

Legris 9405U06 18 Quick Connect Socket 1/4" Body 3/8"-18 NPT trap

SKU CH-S3WT-TT1DS MPN 9405U06

A 1/4" body quick-connect socket with 3/8"-18 NPT thread, safety vent locking and PTFE seals rated to 232 psi and 1,250 L/min

  • Product typeDrain Components
  • Main materialHAWA
  • Product colorBlack
  • Quick-connect socket with safety vent locking for leak-resistant air lines
  • Polymer body rated to 232 psi at 70 °F for reliable pneumatic service
  • PTFE seals operate from -4 °F to 140 °F for wide temperature range
  • Built-in ball valve gives instant airflow control during coupling
  • 3/8"-18 male NPT thread fits standard industrial pneumatic tools

Pneumatic Quick-Connect Socket

The Legris 9405U06 18 is a 1/4-inch body socket with a 3/8"-18 male NPT thread designed for pneumatic equipment and air tools. It features a safety vent locking mechanism that provides a leak-resistant seal for air lines. Black polymer construction with PTFE seals suits automotive workshops and industrial maintenance teams needing reliable compressed-air connections.

Sustained Operation Characteristics

Rated for continuous use up to 232 psi at 70°F, the coupling handles a flow rate of 1,250 L/min across a temperature range of -4°F to 140°F. The integrated ball valve allows airflow control during coupling operation without pressure spikes. Polymer housing and PTFE seals maintain sealing integrity throughout extended duty cycles in workshop environments.

Decisive Specification

The 3/8"-18 male NPT connection thread determines compatibility with existing air-line fittings and tool inlets. Builders using different thread standards or requiring larger body sizes will need an alternative coupling. The industrial interchange standard ensures broad fitment within that specific thread form.

How it compares

Measured against everything we stock in Drain Stoppers, Strainers & Traps, at today’s prices. Recalculated every night.

Price $33.99
Typical for this category: the median of 4,240 items is $31.99.

Specifications

Product
Brand nameLegris
Model name9405U06 18
Product typeDrain Components
Product colorBlack
Size & build
Main materialHAWA

Questions about this item

Will the 232 psi rating hold steady during continuous all-day pneumatic use?

The coupling is rated at 232 psi at 70°F ambient temperature and operates from -4°F to 140°F, so it maintains its pressure rating throughout extended daily use within that range.

What thread size must my air line already have to connect this 3/8"-18 NPT socket?

Your air line needs a matching 3/8"-18 female NPT thread to accept the male NPT connection on this coupling.

Can I keep my existing 1/4 inch body pneumatic tools when switching to this 3/8 inch hose fitting socket?

Yes, the socket body is 1/4 inch while the hose fitting is 3/8 inch, so it bridges your current 1/4 inch tools to a 3/8 inch supply line under the Industrial interchange standard.

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