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Brass push-fit adapter, 1/4 in tube to 1/8 in MNPT, 18 mm long

SMC

SMC KQ2H07-34AS 1/4 in. Push-Fit Trap

SKU CH-6XG7-22HJV MPN KQ2H07-34AS

Connects 1/4 in. tubing to 1/8 in. male NPT threads with push-fit speed and brass durability

  • TypeDrain Components
  • MaterialHAWA
  • ColorBrass
  • Push-to-connect design speeds installation with 1/4 in tube
  • 1/8 in MNPT thread joins piping without extra fittings
  • Brass body resists corrosion for long service life
  • Pre-applied sealant prevents leaks at 145 psi max pressure
  • Rated to 140 °F for reliable air and non-potable water use

Male Adapter with Push-Fit Connection

The SMC KQ2H07-34AS is a brass male adapter designed for air and non-potable water lines. It joins 1/4 inch outer diameter tubing on one side to a 1/8 inch MNPT thread on the other. This fitting suits maintenance technicians and system builders who need a quick, tool-free tube connection.

Rated Pressure and Temperature Limits

The adapter handles a maximum operating pressure of 145 psi and a maximum operating temperature of 140 degrees F. Pre-applied thread sealant on the MNPT side helps create a reliable seal during installation. Brass construction provides durability for typical pneumatic and fluid transfer environments.

Pre-Applied Sealant Simplifies Assembly

Thread sealant is already applied to the 1/8 inch male threads, removing the need for separate tape or paste. The push-to-connect end accepts 1/4 inch tubing without tools, reducing assembly time. Overall length is 18 mm, keeping the profile compact inside panels or machines.

Highlights

  • Push-to-connect design speeds installation with 1/4 in tube
  • 1/8 in MNPT thread joins piping without extra fittings
  • Brass body resists corrosion for long service life
  • Pre-applied sealant prevents leaks at 145 psi max pressure
  • Rated to 140 °F for reliable air and non-potable water use

Specifications

TypeDrain Components
MaterialHAWA
ColorBrass
BrandSmc
ModelKQ2H07-34AS

Questions about this item

How do I install the push-to-connect side on 1/4 in. tubing without leaks?

Cut the tube square, deburr the edge, then push it straight into the fitting until it seats against the internal stop; the pre-applied sealant on the 1/8 in. MNPT threads handles the other side.

What maintenance or replacement will this brass adapter need over time?

Inspect the collet and O-ring periodically; if the grip weakens or the seal weeps, replace the fitting — brass resists corrosion but the internal seals wear.

At what temperature does the 145 psi rating start to drop?

The maximum operating temperature is 140 °F; above that the pressure rating decreases, so keep the system at or below 140 °F for full 145 psi performance.

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