24900-0503 | Pentair System 3 Filters Drain Plug

OEM Pentair 24900-0503 Drain Plug is a replacement component developed for use with Sta-Rite System 3 filters, allowing efficient sand and water drainage. Designed to support ongoing maintenance and system performance, this plug delivers a secure fit for multiple compatible models like S7M120, S8M500, and S7S50. Its rugged construction ensures resistance to pool chemicals, pressure, and wear, making it suitable for long-term use in harsh poolside conditions. Whether used for routine cleanouts or seasonal prep, it upholds filtration function and structural integrity across SM, SD, and SS series systems.

Highlights

• Supports Regular Maintenance: Provides a drainage outlet to help technicians and pool owners service Sta-Rite System 3 filters quickly and cleanly.

• Cross-Series Compatibility: Works with Sta-Rite SM, SD, and SS series filters including S7M400, S8D110, and S8S70.

• Engineered Durability: Made from durable, pool-grade materials to withstand corrosive environments and operational stress.

• Sustains Filter Function: Helps prevent performance loss by enabling efficient debris removal during cleanouts.

• Pentair OEM Standard: Designed to meet factory tolerances for a secure fit and reliable sealing during operation.

Includes

• (1) Pentair 24900-0503 Drain Plug

Compatibility

• Pentair Sta-Rite System 3 Modular Media SM series cartridge filter models: S7M120, S7M400, S8M150, S8M500
• Pentair Sta-Rite System 3 SD series D.E. filter models: S7D75, S8D110
• Pentair Sta-Rite System 3 SS series sand filter models: S8S70 and S7S50

Additional Info

Need a new drain plug for your Sta-Rite System 3 filter? This section helps you determine in-store fitment, purchase advice, and tips for replacing a leaking or lost plug.

Finding the Right Drain Plug In Store

Get the right part for your system before heading in.

Can I get the 24900-0503 drain plug for my S8M500 in store?

What Sta-Rite System 3 models does this plug work with locally?

Will this drain plug fit both SD and SS series filters?

Can Discount Pool Mart staff verify thread size before I buy?

What if I lost the plug—can I buy a replacement by model number?

Installing the Drain Plug After Pickup

Set it in properly to avoid leaks.

How do I install the 24900-0503 plug on my S7M120 filter?

Should I use any sealant or tape when tightening the drain plug?

Is the plug tool-free or does it require a wrench?

Can I hand-tighten this plug safely?

Signs It's Time to Replace the Plug

Don't let a small part disrupt your system.

Why is water dripping from my old plug even when closed?

Can a missing O-ring cause a leak at the drain port?

Is it common to replace the plug during routine service?

Can DPM help match drain parts by filter model?

Diagram