Backflow protection is critical to keeping pool and spa plumbing systems operating safely and efficiently. The Swimables J-Style Corrosion-Resistant Check Valve Flapper (SW-35-056) is a direct-fit replacement designed for Jandy®-style 2-port and 3-port check valves, helping prevent reverse water flow that can damage pumps, heaters, chlorinators, and other downstream equipment.

Over time, original check valve flappers can warp, crack, or corrode—especially in saltwater pools or systems with high chemical exposure. When this happens, water can flow backward through the plumbing during shutdown cycles, placing unnecessary stress on expensive components. The Swimables SW-35-056 restores proper one-way flow control and reliable system protection.

Manufactured from corrosion-resistant materials, this flapper is engineered to withstand harsh pool environments while maintaining a tight seal for consistent performance.

Reliable Backflow Protection for Pool & Spa Systems

A properly functioning check valve flapper ensures water only moves in the intended direction. This replacement flapper helps maintain correct circulation and protects sensitive equipment from reverse flow conditions.

It is ideal for systems using:

• Heaters

• Salt chlorine generators

• Chemical feeders

• Variable-speed pumps

J-Style Compatibility for Easy Replacement

The SW-35-056 is designed to fit Jandy-style check valve housings commonly found in 2-port and 3-port configurations. OEM-style sizing allows it to drop into existing valve bodies without modification, making it a straightforward service replacement during routine maintenance or repairs.

Built for Saltwater and Chemical Environments

Standard flappers often fail prematurely due to corrosion or material breakdown. This corrosion-resistant design is well-suited for both chlorine and saltwater pools, helping extend service life and reduce repeat repairs.

Why a Check Valve Flapper Matters

• Prevents damaging backflow when equipment shuts off

• Protects heaters, pumps, and chlorinators

• Maintains consistent circulation direction

• Reduces wear on plumbing components

• Supports long-term system reliability

Product Specifications

Buy with Confidence from Benchmark Pool Supply

When you purchase the Swimables J-Style Corrosion-Resistant Check Valve Flapper (SW-35-056) from Benchmark Pool Supply, you’re getting a dependable replacement part backed by real pool industry knowledge. Our team understands how critical proper flow control is to protecting high-value pool equipment.

Benchmark Pool Supply stocks trusted replacement parts to help keep pool and spa systems operating safely and efficiently.