A Professional Safety Solution for Unused Pool Suction Ports

Unused suction and vacuum ports represent one of the most commonly overlooked safety risks in swimming pools. The Swimables SW-30-402 Vac Lock 1.5” MPT – Light Gray is a purpose-built suction safety device designed to securely seal unused vacuum lines and suction fittings when they are not actively connected to a pool cleaner.

By threading directly into the suction port, this Vac Lock blocks direct access to suction pressure, helping reduce entrapment risk while also preventing debris from entering the plumbing system. The light gray finish blends cleanly with many pool fittings, providing a professional, low-profile appearance without drawing attention.

This is a pool-specific suction safety component, not a general plumbing plug or pipe cap.

What a Vac Lock Does

A Vac Lock installs into a threaded suction or vacuum port and physically seals the opening. This prevents swimmers, hair, limbs, or debris from contacting suction force when the port is idle.

A properly installed Vac Lock helps:

• Reduce suction entrapment risk

• Secure unused vacuum ports

• Prevent debris from entering suction plumbing

• Maintain balanced circulation

• Support safer pool operation

Vac Locks are especially important for pools with dedicated vacuum lines that are not always connected to suction-side cleaners.

Vac Lock use is commonly recommended alongside items in the Pool Safety Equipment Collection.

1.5” MPT Threaded Compatibility

The Swimables SW-30-402 Vac Lock is manufactured with 1.5-inch Male Pipe Thread (MPT) sizing, making it compatible with many standard pool vacuum and suction fittings.

Compatibility highlights include:

• 1.5” threaded vacuum ports

• Dedicated suction lines

• Standard pool wall and floor fittings

• Common residential and commercial pool plumbing configurations

The threaded design ensures the Vac Lock stays securely in place and resists loosening from vibration or normal system operation.

Why Vac Locks Are Important for Pool Safety

Suction entrapment is a well-documented pool safety hazard. Even unused or rarely accessed vacuum ports can pose a risk if left open.

Installing a Vac Lock:

• Eliminates exposed suction openings

• Helps protect swimmers and children

• Reduces liability for pool owners

• Supports safer circulation systems

• Complements other suction safety measures

Vac Locks are not a replacement for certified drain covers or SVRS systems, but they play a critical role in a layered safety strategy.

For additional suction-related components, this product pairs well with items from the Pool Plumbing Parts Collection.

Durable Construction for Pool Environments

The Swimables SW-30-402 Vac Lock is designed specifically for long-term exposure to pool conditions.

Design considerations include:

• Resistance to chlorinated and saltwater environments

• Durable plastic construction

• Precision threading for a secure seal

• Light gray finish that blends with pool fittings

These features help ensure reliable performance throughout the swimming season and during extended idle periods.

Common Situations Where Vac Locks Are Used

Vac Locks are commonly installed in the following scenarios:

• Dedicated vacuum lines not currently in use

• Pools without permanent suction-side cleaners

• Seasonal shutdowns or winterization

• Temporary safety measures during equipment repairs

• Preventing debris from entering unused suction plumbing

Many pool service professionals consider Vac Locks a best-practice safety upgrade during routine maintenance.

If your pool uses suction-side cleaners, related equipment can be found in the Pool Cleaners Collection.

Installation Considerations

Installing a Vac Lock is simple but should be done carefully to ensure a secure fit.

General Installation Overview:

1. Turn off the pool pump

2. Confirm the suction line is not under vacuum

3. Clean the threaded port

4. Thread the SW-30-402 Vac Lock into the port

5. Hand-tighten until snug—do not overtighten

6. Restart the system and check for air leaks

No tools are typically required. Over-tightening can damage threads or fittings.

Supports Overall Circulation System Integrity

By sealing unused suction ports, Vac Locks help maintain balanced system hydraulics and reduce unwanted air entry.

This helps:

• Improve pump priming stability

• Reduce air introduction

• Protect internal plumbing

• Support consistent filtration performance

For complete circulation health, suction safety devices should be used alongside components from the Pool Pumps Collection.

Ideal Applications

The Swimables SW-30-402 Vac Lock is ideal for:

• Residential in-ground pools

• Commercial pools with unused vacuum lines

• Pools transitioning away from suction cleaners

• Safety-focused maintenance programs

• Preventative plumbing protection

This Vac Lock is a low-cost upgrade that provides meaningful safety and operational benefits.

Why Choose Swimables Pool Safety Components

Swimables products are designed specifically for swimming pool environments, offering dependable compatibility and long-term performance.

Key advantages include:

• Pool-industry-specific design

• Accurate 1.5” MPT threading

• Durable materials for repeated service cycles

• Trusted compatibility with standard pool fittings

The SW-30-402 Vac Lock is a reliable solution for securing unused suction ports safely and professionally.

Buy with Confidence from Benchmark Pool Supply

At Benchmark Pool Supply, we focus on pool-specific safety and equipment solutions—not generic substitutes. The Swimables SW-30-402 Vac Lock 1.5” MPT – Light Gray is selected to meet real-world service needs and improve overall pool safety.

When you purchase from Benchmark Pool Supply, you receive:

• Pool-specific safety components

• Clear compatibility guidance

• Fast shipping or convenient local pickup

• Support from knowledgeable pool professionals

We help pool owners and service pros implement smart, safety-focused solutions.