Skip links


Tube Stem Reducer Acetal Fitting 1/4″ PTC
Works with ALL standards 1/4″ O.D. / 3/8″ O.D. tubing.
Made from the highest quality Acetal (Polyoxymethylene (POM)) plastic.
Tube Stem Reducer 1/4″ PTC x 3/8″
Comparable to Parker Tube Reducer 1/4″ x 3/8″ (A4RD6-MG)

Coastal Water Filters Acetal Fitting – 1/4″ PTC x 3/8″ Tube Stem. This versatile component ensures a secure, efficient, and leak-free connection within your system. Crafted from high-quality acetal material, it has chemical resistance. The precise sizing, featuring a 1/4″ PTC (Push-to-Connect) end and a 3/8″ Tube Stem, ensures a snug, reliable connection for optimized performance.

Perfect Sizing: The CWF-ARD0406 boasts a 1/4″ PTC (Push-to-Connect) on one end and a 3/8″ Tube Stem on the other. This ideal sizing combination ensures a snug, reliable connection, eliminating leaks and inefficiencies in your RO system.

High-Quality Material: Crafted from premium acetal material, this fitting is engineered for durability and chemical resistance. It’s built to withstand the challenges of water filtration, guaranteeing long-lasting and dependable performance.

Universal Compatibility: Designed to work seamlessly with a variety of RO systems, the CWF-ARD0406 offers broad compatibility. Whether you’re upgrading your existing setup or starting from scratch, it’s the perfect fit.

Efficient Space Utilization: The reducer’s compact design allows you to efficiently manage your tubing connections, even in tight spaces. It ensures a clean and organized RO system setup.

Easy Installation: Say goodbye to complex installations. The CWF-ARD0406 features a user-friendly PTC (Push-to-Connect) system that requires no special tools or plumbing expertise. Connecting your tubing is quick, simple, and secure.

Water filtration system to new heights with the Coastal Water Filters Acetal Fitting – 1/4″ PTC x 3/8″ Tube Stem Reducer RO (CWF-ARD0406). Whether you’re a DIY enthusiast or a professional installer, this fits a hassle-free, leak-proof experience and pristine water quality for your home or business.

Additional information


Coastal Water Filters

Compatible Brand






Item Diameter

1/4" x 3/8"

Compatible Model

Tube Reducer 1/4" x 3/8" (A4RD6-MG)


POM, Acetal


There are no reviews yet.

Be the first to review “Coastal Water Filters Acetal Fitting – 1/4″ PTC x 3/8″ Tube Stem: Reducer RO-CWF-ARD0406”

Your email address will not be published. Required fields are marked *

This website uses cookies to improve your web experience.