PVC Slip Union Coupling with EPDM O-Ring – Leak-Free Seal

PVC Ferrule Slip Union Coupling with EPDM O-Ring – Leak-Free Tight Sealing

Upgrade your plumbing system with this heavy-duty PVC Slip Union Coupling, engineered for a secure, leak-free connection in a wide range of water management applications. Whether you're building out an irrigation network, maintaining a water park, setting up an aquarium pipeline, or servicing a pool spa, this coupling delivers reliable performance under pressure up to 850 kPa. Each set includes 1 PVC Union Coupling and 1 roll of tape — everything you need to get the job done.

Made in Mainland China.

Key Features

• Enhanced EPDM O-Ring Sealing: The built-in EPDM O-ring provides superior sealing performance, resisting oil, water, and common solvents for a durable, long-lasting connection even under demanding conditions.
• Leak-Free Design: The ferrule-style connection and precision-cast equal union body ensure a tight, consistent fit every time — no drips, no leaks.
• Wide Application Range: Ideal for irrigation systems, water parks, pool spas, aquariums, indoor cold water supply lines, outdoor water lines, and more.
• Convenient Maintenance & Repairs: Designed for easy plumbing repairs and upgrades. The slip union design conforms closely to pipe structure, simplifying connections to pipes, elbows, and other standard fittings.
• Easy Installation: Lightweight plastic construction makes handling simple. Installation requires primer and solvent cement (sold separately) — no special tools needed.
• Durable Plastic Construction: Cast from quality plastic with a square head code for wrench compatibility, ensuring solid, repeatable tightening.

Specifications

• Material: PVC Plastic
• Connection Type: Ferrule / Slip Union
• Seal: EPDM O-Ring
• Head Code: Square
• Shape: Equal
• Max Pressure: <850 kPa
• Manufacturing Method: Casting
• Origin: Made in Mainland China

What's in the Box

• 1× PVC Union Coupling
• 1× Tape

Installation Notes

For best results, use a quality PVC primer and solvent cement to bond the fitting to your pipe. Ensure pipe ends are clean and dry before applying primer. Allow adequate cure time before pressurizing the system. Refer to your local plumbing code for installation requirements.

For guidance on safe plumbing materials and water system standards, visit the U.S. EPA WaterSense Program.

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Frequently Asked Questions

Q: What types of pipes is this PVC slip union coupling compatible with?

A: This PVC slip union coupling is designed to connect standard PVC pipes of equal diameter. It is compatible with typical cold water supply lines used in irrigation systems, aquariums, pool spas, and water park pipelines. Always match the coupling size to your pipe diameter before installation.

Q: Do I need special tools to install this PVC ferrule union coupling?

A: No special tools are required. Installation uses standard PVC primer and solvent cement (sold separately). The lightweight plastic body and square head design allow for easy hand positioning and wrench tightening. Clean the pipe ends thoroughly before applying primer for the best seal.

Q: How does the EPDM O-ring improve the sealing performance of this coupling?

A: The EPDM (Ethylene Propylene Diene Monomer) O-ring is highly resistant to water, oil, and many solvents. It compresses evenly when the union is tightened, creating a consistent, gap-free seal that prevents leaks even at pressures up to 850 kPa, making it suitable for both indoor and outdoor water applications.

Q: Can this coupling be used in outdoor or high-moisture environments?

A: Yes. The PVC material and EPDM O-ring are both well-suited for outdoor use and high-moisture environments. This coupling is commonly used in garden irrigation, outdoor cold water lines, and water park infrastructure where exposure to water and varying temperatures is expected.