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Small brass push-fit adapter, 1/4 in tube to 3/8 MNPT

SMC

SMC KQ2H07-36AS 1/4 in. tube x 3/8 in. MNPT brass trap

SKU CH-A88T-B6W27 MPN KQ2H07-36AS

Brass push-fit adapter connects 1/4 inch tube to 3/8 inch MNPT for air or non-potable water up to 145 psi and 140°F

  • TypeDrain Components
  • ColorBrass
  • Push-to-connect design speeds installation
  • Brass construction resists corrosion
  • Pre-applied thread sealant prevents leaks
  • Rated for 145 psi air and water systems
  • Withstands temperatures up to 140 Degrees F

Purpose and fit

The SMC KQ2H07-36AS is a push-fit adapter that joins 1/4 in. tubing to a 3/8 in. male NPT port. It suits pneumatic and non-potable water circuits where a quick, tool-free connection is preferred.

Build and connections

Brass construction resists corrosion in compressed-air lines. The pre-applied thread sealant on the MNPT end removes the need for tape or paste during installation. Push-to-connect on the tube side allows rapid assembly and disassembly for maintenance.

Pressure and temperature limits

Rated for 145 psi maximum operating pressure and 140 °F maximum operating temperature. Exceeding either value risks leakage or fitting failure. The fitting is not approved for potable-water systems.

Highlights

  • Push-to-connect design speeds installation
  • Brass construction resists corrosion
  • Pre-applied thread sealant prevents leaks
  • Rated for 145 psi air and water systems
  • Withstands temperatures up to 140 Degrees F

Specifications

TypeDrain Components
ColorBrass
BrandSmc
ModelKQ2H07-36AS

Questions about this item

How does the 1/4 in. push-to-connect side seal against the tube?

The push-to-connect end grips the 1/4 in. tube outer diameter internally; no tools or separate ferrules are needed, and the seal is made by the internal collet and O-ring when the tube is fully inserted.

What clearance is required for the 3/8 in. MNPT thread and the overall length of 18 3/32 mm?

The male NPT thread needs a matching 3/8 in. female port; the installed fitting adds 18 3/32 mm from the port face to the tube-release sleeve, so allow that depth plus tube-insertion space.

The pre-applied thread sealant is already on the 3/8 in. MNPT threads — do I still need tape or paste?

No; the factory-applied sealant on the 3/8 in. MNPT threads is designed to seal without additional tape or paste — just thread the fitting into the female port to the proper engagement.

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