AquaLock 3514-1008 Push-to-Connect Plastic Reducing Stem 1/2 in CTS x 3/8 in CTS

The AquaLock 3514-1008 is a push-to-connect plastic reducing stem designed to transition from 1/2 inch CTS to 3/8 inch CTS tubing with no tools required. Manufactured from durable off-white polysulfone with an EPDM O-ring, this fitting delivers a reliable, zero-leak connection for residential and commercial plumbing applications.

Unlike traditional barb fittings, the AquaLock stem connects tubing on the outside, which maintains greater flow capacity through the line. A unique O-ring guide feature ensures a secure, leak-free seal every time, and once connected, the tubing retains the ability to swivel—making this fitting well-suited for vibrating or dynamic plumbing installations.

Key Features:

• Push-to-connect design — no tools or tube inserts required for installation
• Transitions 1/2 in CTS (inlet) to 3/8 in CTS (outlet)
• Compatible with copper, CPVC, PEX, and CTS rated pipe
• Constructed from off-white polysulfone with EPDM O-ring
• Unique O-ring guide provides a zero-leak connection
• Tubing swivels after connection — ideal for vibrating and dynamic applications
• Suitable for both hot and cold water applications
• Maximum temperature rating: 180°F @ 100 PSI / 75°F @ 250 PSI

Certifications & Standards:

• NSF-61 and NSF-14 certified
• CSA B137.5 compliant
• ASTM F877 compliant
• IGC 188-04C recognized
• Recognized by the Uniform Plumbing Code (UPC)
• IAPMO certified

Also Known As / Cross Reference: Watts 81902908, 003514-1008, 013514-1008, 3514R1008, SeaTech 35 Series