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Small brass push-fit stop adapter with 1/4 by 3/8 inch tube ends

SharkBite

SharkBite U3523LF 1/4 x 3/8 DZR Brass Stop Adapter

SKU CH-T66T-66AJX

A push-fit stop adapter in DZR brass joining 1/4 in and 3/8 in tube, rated to 200 psi and 200 °F, meeting ANSI/NSF 61, IAPMO IGC 188, IPC and UPC standards

  • TypeOther
  • Push-fit connection speeds installation without tools
  • DZR brass resists dezincification for long service life
  • Rated to 200 psi and 200 °F for demanding supplies
  • Certified to ANSI/NSF 61, IAPMO IGC 188, IPC and UPC
  • California Proposition 65 warning applies

Application and user

This push-fit stop adapter connects 1/4 inch and 3/8 inch tubing in residential and light-commercial plumbing systems. It suits installers and DIYers who need a quick, solder-free joint for water supply lines.

Critical specification

The fitting is made from dezincification-resistant brass and rated for 200 psi maximum pressure across a 0 to 200 degrees F temperature range. These limits determine whether the adapter matches the service conditions of the installation.

Sustained-load behaviour

Under continuous pressure and thermal cycling the DZR brass body resists corrosion and maintains seal integrity without the degradation seen in standard brass alloys. The push-fit connection remains secure during prolonged service without the need for re-tightening.

Highlights

  • Push-fit connection speeds installation without tools
  • DZR brass resists dezincification for long service life
  • Rated to 200 psi and 200 °F for demanding supplies
  • Certified to ANSI/NSF 61, IAPMO IGC 188, IPC and UPC
  • California Proposition 65 warning applies

Specifications

BrandSHARKBITE
TypeOther

Questions about this item

What does the 200 psi rating mean when the adapter is installed in a household supply line?

It indicates the maximum working pressure the push‑fit connection can handle continuously without leaking or bursting.

Which plumbing codes and standards does the push‑fit connection meet?

The fitting complies with ANSI/NSF‑61, IAPMO IGC 188, IPC and UPC requirements for potable‑water use.

What tube diameters does the adapter join and how much clearance is needed for the push‑fit ends?

It connects 1/4‑inch tube to 3/8‑inch tube; each push‑fit end requires enough straight tube length to fully seat the internal grip ring and O‑ring.

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