The Magic Plastics 0821_20C is a 2_ slip_x_slip swing spring check valve made from clear, corrosion-resistant materialÑperfect for pool, spa, and irrigation applications. Its swing-spring mechanism ensures smooth one-way flow while preventing backflow or siphoning when the system shuts down. With solvent-weld slip connections on both ends, installation is easy and leak-free. The transparent body allows visual inspection of the valve seat to confirm proper operation. Built to resist pool chemicals and UV exposure, this clear check valve offers reliable performance and reduces maintenance over time.

• 2_ Slip-x-Slip Solvent Weld Design: Features slip connections on both ends for easy, leak-free solvent-weld installation in pool, spa, or irrigation plumbing.

• Swing-Spring Mechanism for One-Way Flow: Prevents backflow and siphoning by ensuring smooth directional flow when the system is in operation or shuts down.

• Clear, Corrosion-Resistant Body: Transparent construction allows easy visual inspection of internal components and is built to withstand harsh pool chemicals and UV exposure.

• Ideal for Pools, Spas, and Irrigation Systems: Designed for versatile use in residential and commercial water systems requiring backflow protection.

• Low-Maintenance & Long-Lasting: Durable materials and internal spring action reduce wear and maintenance needs over time, delivering consistent, reliable performance.

• (1) Check Valve

Need help installing the Magic Plastics 2_ slip swing spring check valve, model 0821_20C? This section answers real-world questions about compatibility, proper orientation, and in-store pickup options for pool, spa, or irrigation setups.

Installation Help for 0821_20C Slip x Slip Valve

This valve installs using standard 2_ solvent weld connections. It's important to position it correctly for proper flow direction and leak-free operation.

Does the clear Magic Plastics 0821_20C valve work with my 2_ plumbing?

Which way should the arrow point when installing the 0821_20C check valve?

Can I buy the 0821_20C check valve in-store and install it myself?

Do I need primer and glue for this slip-style valve connection?

Is the 0821_20C swing check valve sold at Discount Pool Mart locations?

Preventing Backflow and Siphoning

The swing spring inside the 0821_20C ensures water only moves one way, helping to stop reverse flow when your pump shuts off.

How does the internal spring help prevent backflow in my system?

Will this valve keep water from draining out of my spa line?

Can I walk in and get a check valve that stops siphoning from raised equipment?

Is the Magic Plastics swing valve suitable for both suction and return lines?

Should I install this valve vertically or horizontally to prevent drain-down?

Visual Inspection and Maintenance Tips

The clear body helps you spot debris, buildup, or improper closure before it becomes a bigger issue.

Can I visually check if the 0821_20C check valve is closing properly?

How do I know if debris is blocking the spring flap inside the valve?

Is this check valve easy to clean without removing from the line?

Do Discount Pool Mart stores stock valve cleaning brushes or tools?

Will chemical wear reduce visibility through the clear check valve housing?