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BWT PSJ400 Twin Prefilter System 4.5" × 20"

BWT PSJ400 Twin Prefilter System 4.5" × 20"

Two-Stage Filtration Twin 20-Inch Housings Commercial RO Protection

Item Number: w-bwt-PSJ400-RB

Your Price $891

4 payments of $222.75

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Dispatch in 3-7 days

Categories: Water Filters Replacement Filters BWT

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Description

BWT PSJ400 Twin Prefilter System 4.5" × 20"

The BWT PSJ400 is a high-capacity twin prefilter system designed to provide two-stage water filtration before commercial equipment or reverse osmosis systems.

The first housing contains a BWT PS5W20 polyspun sediment cartridge that reduces dirt, rust and suspended particles down to a nominal 5-micron rating.

Water then passes through the included FB5W20 Fibron cartridge, which provides additional sediment filtration while reducing chlorine and unwanted tastes and odours.

This two-stage configuration helps protect sensitive equipment and reverse osmosis membranes from sediment blockages and chlorine degradation. Its twin 4.5" × 20" housings make it suitable for demanding commercial installations requiring dependable filtration and longer service intervals.

A downstream pressure gauge allows operators to monitor water pressure and cartridge restriction. Vent buttons make it easier to release trapped air and pressure during servicing.

What's in the Box?

BWT PSJ400 twin prefilter system

BWT PS5W20 5-micron polyspun sediment cartridge

BWT FB5W20 5-micron Fibron carbon cartridge

Mounting bracket

Downstream pressure gauge

Housing sump spanner

Specifications

Brand: BWT
Model: PSJ400
Manufacturer Number: H15DN2EF
System Configuration: Twin, two-high system
Number of Housings: Two
Cartridge Size: 4.5" × 20"
First-Stage Cartridge: BWT PS5W20 polyspun sediment filter
Second-Stage Cartridge: BWT FB5W20 Fibron carbon filter
Filtration Rating: 5 micron nominal
Maximum Flow Rate: Less than 30L per minute
Operating Pressure: 100–860kPa
Operating Temperature: 5–40°C
Inlet Connection: 3/4" BSP male
Outlet Connection: 3/4" BSP male
Recommended Cartridge Replacement: Every 12 months or when downstream pressure falls below 50kPa during demand
Height: 72cm
Width: 42cm
Weight: 13kg
Feed Water: Potable water only
Replacement Sediment Cartridge: BWT PS5W20
Replacement Carbon Cartridge: BWT FB5W20
Features:
- Commercial twin prefilter system
- Two 4.5" × 20" jumbo filter housings
- Two-stage sediment and carbon filtration
- Includes BWT PS5W20 sediment cartridge
- Includes BWT FB5W20 Fibron carbon cartridge
- Nominal 5-micron filtration
- Reduces sediment, dirt and rust
- Reduces chlorine, unwanted tastes and odours
- Helps protect reverse osmosis membranes
- Downstream pressure gauge
- Vent buttons for air and pressure release
- Suitable for high-capacity commercial applications
- Mounting bracket included
- Housing sump spanner included
  Coffee Parts Thoughts:
  
  The PSJ400 is the most comprehensive option in the PSJ range for sites needing dedicated sediment and carbon filtration.
  Using a separate PS5W20 sediment cartridge before the FB5W20 carbon cartridge helps prevent larger amounts of dirt and rust from prematurely restricting the carbon stage. This makes it a strong choice for busy commercial sites or incoming water supplies with higher sediment levels.
  The downstream pressure gauge should be checked regularly, as cartridge life will depend on water quality and daily consumption.

Specifications

Brand	BWT
Model	D15DN2AF
Suits	RO
Warranty	1 Year
Returns	30 Days Change of Mind (If Unused)
Filter System	Head Only
Filter Connection	3/8 inch bsp
Flush Port	No
Shut-off Valve	Yes

Shipping & Returns

Delivery time and costs

Parts, accessories, Brew Bar and Tea Bar

Standard delivery

From $8.95 2-7 business days*

Express delivery

From $9.95 1-3 business days*

Water filters

Standard delivery

From $8.95 2-7 business days*

Express delivery

From $9.95 1-3 business days*

Coffee grinders

Home grinders

Calculated at checkout 1-3 business days*

Commercial grinders

Calculated at checkout 1-3 business days*

Coffee machines

Home machines

Calculated at checkout 1-4 business days*

Commercial machines

Calculated at checkout 2-7 business days*

*Delivery timeframes are estimates and start once your order is dispatched.

Freight partners

Within Australia

Australia Post

TNT Couriers

Same day (Sydney metro)

Capital Transport

Civic Couriers

We ship using Australia Post eParcel and a range of courier partners within Australia and internationally. If you are in Sydney, you may also be able to choose same day courier options or Click and Collect from our Pagewood warehouse.

Shipping cost depends on the items in your cart and your delivery address. You can see the shipping price on the product page (where available) and at checkout before entering payment details.

Orders placed before 3pm (Sydney time) on a business day are typically dispatched the same day. Deliveries are made Monday to Friday, usually between 8am and 6pm. Standard and express options may be available at checkout depending on the item and destination.

For more details, visit our shipping and delivery page.

Warranty

Our products are supplied through Australian channels and are covered by Australian consumer guarantees and, where applicable, manufacturer warranty. For international orders shipped outside Australia, warranty support may require the item to be returned to Australia for assessment.

Easy returns

Most spare parts, accessories and brew gear can be returned within 14 days of purchase, subject to conditions and exclusions. If you paid with an eligible PayPal account, you may be able to claim return shipping costs through PayPal. For full details, read our returns policy.