Swimables SW-35-120 Pool Check Valve

Reliable Backflow Protection for Pool & Spa Plumbing Systems

The Swimables Check Valve (SW-35-120) is a pool-rated plumbing check valve designed to prevent unwanted backflow in residential swimming pool and spa systems. This valve allows water to flow in one direction while automatically closing if flow reverses, helping protect pumps, heaters, and sanitation equipment from damage caused by reverse water movement.

Check valves are a critical component on modern equipment pads where multiple pieces of equipment operate together under varying flow conditions.

This product is a pool check valve, not a diverter valve or manual shut-off valve.

Why Check Valves Matter in Pool Systems

Without a check valve, water can move backward through plumbing lines when the pump shuts off or when pressure changes occur. This can lead to:

• Loss of pump prime

• Water draining backward from elevated lines

• Heater or salt system damage

• Chemical migration into sensitive equipment

The Swimables SW-35-120 check valve helps maintain proper flow direction, protecting equipment and improving overall system reliability.

Check valves like this are commonly used with systems in the Pool Pumps Collection and Pool Heaters Collection.

Designed for Pool & Spa Applications

Unlike general plumbing valves, the Swimables SW-35-120 is designed specifically for pool and spa environments.

Design features include:

• Pool-rated materials compatible with chlorinated water

• Internal sealing designed for continuous circulation use

• Smooth flow path to reduce restriction

• Reliable closure under changing pressure conditions

This makes it suitable for installation directly on the pool equipment pad.

Protects High-Value Pool Equipment

Check valves are frequently installed to protect expensive components such as:

• Pool heaters

• Salt chlorine generators

• Chemical feeders

• Elevated water feature plumbing

By preventing reverse flow, the Swimables check valve helps reduce wear and extend the life of connected equipment.

This valve is often paired with components from the Pool Plumbing Valves Collection.

Ideal for New Builds & Equipment Retrofits

The Swimables SW-35-120 check valve is commonly installed during:

• New pool construction

• Equipment pad upgrades

• Heater or salt system replacements

• Plumbing reconfigurations

Adding or replacing a check valve is a simple step that can prevent costly repairs later.

Built for Consistent Flow & Minimal Pressure Loss

Pool systems with modern variable-speed pumps require plumbing components that maintain efficiency.

The SW-35-120 is designed to:

• Allow smooth water flow

• Minimize pressure loss

• Support stable circulation

• Operate reliably under normal pool pressures

This makes it a good choice for residential in-ground pool systems.

Installation Considerations

The Swimables check valve should be installed with proper orientation to ensure correct flow direction.

General installation considerations include:

• Confirming flow arrow direction

• Ensuring straight plumbing alignment

• Providing access for future service

• Using proper pool-grade plumbing practices

Professional installation is recommended for best performance and long-term reliability.

Specs & Details

Works as Part of a Complete Pool Plumbing System

A properly designed pool system relies on coordinated plumbing components. The Swimables SW-35-120 check valve works alongside items from the Pool Equipment Collection to maintain correct circulation behavior and protect equipment.

Routine inspection of check valves is part of good pool system maintenance.

Buy with Confidence from Benchmark Pool Supply

At Benchmark Pool Supply, we stock professional-grade pool plumbing components chosen for reliability and compatibility. The Swimables Check Valve (SW-35-120) offers dependable backflow protection for residential pool and spa systems.

When you buy from Benchmark Pool Supply, you receive:

• Pool-specific product expertise

• Trusted replacement parts

• Local inventory and support

• Confidence buying from pool professionals

We help you protect your pool equipment the right way.