Product Overview

The Pentair 300005 D.E. Separation Tank captures spent diatomaceous earth (D.E.) and debris when a D.E. filter is backwashed, so it can be bagged and disposed of properly instead of being discharged to the sewer or street. Sized for D.E. filters up to 100 sq. ft., it has 2 in. x 2-1/2 in. slip unionized fittings, a quarter-turn locking ring for quick access, and a removable debris bag that holds up to 10 lbs of D.E.

⚠️ Important Purchase Notice

Installation should be done by a qualified pool professional in line with local codes and Pentair's installation guide. Please inspect your shipment on arrival and report any shipping damage promptly.

WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Ideal For

• Pools with D.E. filters up to 100 sq. ft.
• Areas where D.E. discharge to sewer or storm drain is restricted
• Equipment pads without a backwash line to waste
• New D.E. filter installations and upgrades

Key Features

• Collects spent D.E. during backwash
• 100 sq. ft. capacity
• 2 in. x 2-1/2 in. slip unionized fittings
• Quarter-turn locking ring for quick, easy access
• Removable polypropylene debris bag holds up to 10 lbs of D.E.
• Air relief plug and clamp assembly included

Benefits

• Helps keep D.E. out of sewers and storm drains where discharge is restricted
• Spent D.E. is contained in a bag that is quick and easy to remove and empty
• Unionized fittings make installation and service simpler

Compatibility

The 300005 is designed for pool D.E. filters up to 100 sq. ft. with 2 in. or 2-1/2 in. slip plumbing. Before ordering, confirm your filter size, plumbing size and local discharge requirements, and confirm the part number 300005 matches your needs.

Installation or Upgrade Context

The separation tank is plumbed into the backwash line of a D.E. filter. During backwash, water and spent D.E. flow into the tank, where the debris bag traps the D.E. Once backwashing is complete, open the quarter-turn locking ring, remove the bag, and dispose of the D.E. according to local regulations before recharging the filter with fresh D.E.

What’s Included

• D.E. separation tank
• Polypropylene debris bag
• Air relief plug
• Clamp assembly

Specifications

Warranty

This product is covered by Pentair's manufacturer warranty, subject to Pentair's terms and conditions. Pool Supply Depot can provide proof of purchase for warranty claims.

Customer Q&A

What does a D.E. separation tank do?

It captures spent D.E. during backwashing in a removable bag so it can be disposed of properly instead of going down the drain.

How much D.E. does the bag hold?

The debris bag holds up to 10 lbs of D.E.

What size are the connections?

2 in. x 2-1/2 in. slip, with unionized fittings.

What filter size does it work with?

It is rated for D.E. filters up to 100 sq. ft.

What is included?

The tank, a polypropylene debris bag, an air relief plug and a clamp assembly.