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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

  • Product typeDrain Components
  • Main materialHAWA
  • Product 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.

How it compares

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

Price $1.99
Cheaper than about 98% of the 4,240 comparable items (median $31.99).

Specifications

Product
Brand nameSmc
Model nameKQ2H07-34AS
Product typeDrain Components
Product colorBrass
Size & build
Main materialHAWA

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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