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Union 1/4″ PTC
Push to Connect Union Acetal Fitting 1/4″
Works with ALL standards 1/4″ O.D. tubing.
Made from the highest quality Acetal (Polyoxymethylene (POM)) plastic.
Comparable to Parker Union Connector 1/4″ (A4UC4-MG)

Elevate your water filtration experience with the Coastal Water Filters Acetal Fitting – 1/4″ PTC Union RO (CWF-AUC0404). This meticulously engineered component is designed to seamlessly integrate into your reverse osmosis (RO) system, ensuring a secure, efficient, and leak-free connection.

Exceptional Durability: The CWF-AUC0404 is manufactured from high-quality acetal material, known for its exceptional durability and resistance to chemicals and wear. Count on it for a long-lasting, dependable solution for your water filtration needs.

Versatile Compatibility: This fitting is designed to be compatible with a wide range of RO systems, making it a versatile addition to your filtration setup. Whether you’re upgrading an existing system or starting from scratch, it’s a perfect fit.

Space-Efficient Design: With its compact and smart 1/4″ PTC Union, this fitting is ideal for systems with limited space. Its minimalist design ensures that your tubing connections are neatly and efficiently routed.

Effortless Installation: Installing the CWF-AUC0404 is a breeze, thanks to its user-friendly PTC (Push-to-Connect) feature. No specialized tools or plumbing expertise are needed; simply push your tubing into the fitting for a tight, dependable connection.

Consistent Performance: At Coastal Water Filters, we’re committed to delivering high-quality products, and the CWF-AUC0404 is no exception. Count on it for consistent, reliable performance, ensuring your RO system operates smoothly over time.

RO water filtration system to the next level with the Coastal Water Filters Acetal Fitting – 1/4″ PTC Union RO (CWF-AUC0404). Whether you’re a DIY enthusiast or a professional installer, this fitting guarantees a stress-free, leak-proof experience and the highest quality water for your home or business.

Additional information


Coastal Water Filters

Compatible Brand






Item Diameter


Compatible Model

Union Connector 1/4" (A4UC4-MG)


POM, Acetal


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