Restore Even Flow Distribution Inside Your DE Filter

Inside every DE filter is a critical internal component responsible for distributing filtered water evenly across all grids. The Swimables SW-28-400 Jandy® Style DE Filter Manifold is a precision replacement designed to restore proper internal flow balance in Jandy DEV and DEL series DE filters.

This manifold replaces Jandy OEM part number R0359000 and is engineered to match original specifications for fit, alignment, and hydraulic performance. When the original manifold becomes cracked, warped, or brittle, water distribution becomes uneven—leading to poor filtration, grid damage, and rising system pressure. Replacing the manifold restores the internal structure that allows the DE filter to operate at peak efficiency.

This is a pool-specific DE filter internal component, not a generic plumbing part.

What the DE Filter Manifold Does

The manifold sits at the top of the DE filter grid assembly and serves as the collection and distribution hub for filtered water. Its role is to ensure that water flows evenly through each grid before exiting the filter.

A properly functioning manifold:

• Distributes water evenly across all DE grids

• Maintains consistent internal pressure

• Prevents grid collapse or uneven loading

• Supports efficient DE coating and filtration

• Protects internal filter components

When the manifold fails, grids may receive uneven flow, causing premature wear, torn fabric, or bypassed filtration.

For related internal components, this part is often serviced alongside items in the Pool Filter Parts Collection.

Direct Replacement for Jandy DEV & DEL Filters

The Swimables SW-28-400 is designed as a Jandy-style replacement for OEM R0359000, making it compatible with Jandy DEV and DEL series DE filters that use this manifold design.

Compatibility highlights:

• Replaces Jandy R0359000

• Fits Jandy DEV and DEL DE filter models

• Correct port spacing and alignment

• Designed to seat properly on grid assemblies

Using the correct manifold is critical—incorrect or ill-fitting manifolds can cause leaks, misalignment, and grid damage.

Common Signs the Manifold Needs Replacement

The DE filter manifold is exposed to constant pressure, chemicals, and thermal cycling. Over time, this can lead to failure. Replace the manifold if you notice:

• Cracks or fractures in the plastic

• Difficulty reseating the grid assembly

• Uneven pressure across the filter

• DE returning to the pool

• Torn or collapsed filter grids

• Rising pressure shortly after cleaning

Many of these symptoms are misdiagnosed as grid failure when the root cause is actually a compromised manifold.

If filtration issues persist, additional components in the Pool Filters Collection should be inspected.

Built for DE Filter Operating Conditions

Unlike general-purpose plastics, the Swimables SW-28-400 manifold is manufactured for pressurized DE filtration environments.

Design considerations include:

• Resistance to chlorinated and saltwater exposure

• Structural integrity under continuous pressure

• Accurate molding for proper grid alignment

• Durability through repeated cleanings and teardowns

This ensures reliable performance season after season when installed in compatible Jandy filters.

Why Proper Manifold Function Matters

DE filters rely on even internal flow to coat grids uniformly with diatomaceous earth. When the manifold is damaged, flow becomes unbalanced, leading to:

• Poor filtration efficiency

• Rapid pressure increases

• Uneven DE loading

• Grid damage and shortened lifespan

• Increased maintenance frequency

Replacing the manifold restores proper internal hydraulics and helps protect your investment in DE grids.

For best system performance, internal filter repairs should be paired with proper circulation from items in the Pool Pumps Collection.

Installation During Routine Filter Service

The SW-28-400 manifold is typically replaced during routine DE filter maintenance, grid replacement, or deep cleaning.

General Installation Steps:

1. Turn off the pool pump

2. Relieve pressure from the filter tank

3. Open the filter and remove the grid assembly

4. Remove the damaged manifold

5. Install the new SW-28-400 manifold

6. Reassemble grids and filter tank

7. Recharge with DE and restart the system

Professional installation is recommended to ensure proper seating and pressure safety.

Ideal for Preventative Maintenance

Manifolds are often replaced proactively when servicing older filters, especially if the filter has been in service for many seasons.

Preventative replacement helps:

• Avoid sudden internal failures

• Protect new or existing grids

• Maintain stable operating pressure

• Reduce unexpected downtime

This component is frequently serviced alongside grids, air relief parts, and O-rings found in the Pool Maintenance Tools Collection.

Compatible Pool Applications

The Swimables SW-28-400 Jandy-style DE filter manifold is suitable for:

• Residential in-ground pools

• Commercial pools using Jandy DEV/DEL filters

• Chlorine pools

• Saltwater pools

Always verify your filter model and OEM part number before ordering to ensure proper compatibility.

Why Choose Swimables Replacement Parts

Swimables replacement components are designed to match OEM specifications while offering a cost-effective alternative to factory parts. Each component is engineered for fit, function, and durability in pool equipment environments.

Benefits include:

• Accurate OEM cross-referencing

• Pool-industry-specific materials

• Reliable performance under pressure

• Compatibility with common service procedures

The SW-28-400 is a trusted solution for restoring Jandy DE filter performance.

Buy with Confidence from Benchmark Pool Supply

At Benchmark Pool Supply, we stock professional-grade pool replacement parts designed to restore equipment performance—not generic substitutes. The Swimables SW-28-400 Jandy® Style DE Filter Manifold (Replaces R0359000) is selected for accurate fit, dependable performance, and long service life.

When you purchase from Benchmark Pool Supply, you receive:

• Pool-specific replacement components

• Clear OEM cross-reference information

• Fast shipping or convenient local pickup

• Support from knowledgeable pool professionals

We help ensure internal filter repairs deliver long-term reliability.