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GreyFlow™ | PS-AG-S4 (Automatic 400W) - 100mm Inlet

SKU: GW GFPS-AG-S4

Automatic 400W GreyFlow™ PS-AG diversion unit with backflushing filtration, suited to higher-flow greywater and more difficult land-application layouts.

Availability: In stock

$3,268.12 excl GST

excluding shipping

Estimated delivery time: Approx. 1–2 weeks (NZ-wide)

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GreyFlow™ | PS-AG Manual

Automatic pumped greywater diversion system

GreyFlow™ | PS-AG-S4 Automatic 400W

A GreyFlow™ PS-AG Automatic 400W greywater diversion unit for higher-flow greywater and more difficult land-application layouts.

The PS-AG-S4 Automatic 400W is suited to greywater diversion applications where automatic backflushing filtration is preferred to reduce routine maintenance.

Pump

400W

Automatic backflush model

Connection

100mm inlet

25mm outlet

Performance

21m

Max flow 180 LPM

Certification

WaterMark

IAPMO-certified

Product background

Developed for practical greywater reuse

GreyFlow™ greywater diversion systems were developed in Australia to help households reuse suitable greywater during drought conditions, water restrictions and rising water costs. The PS-AG Automatic range builds on that concept with automatic backflushing filtration for reduced maintenance.

The system is primarily used to filter and pump laundry, shower and basin water into garden irrigation and subsurface land-application pathways where the site is suitable.

For long-term garden and soil outcomes, low-phosphorus and low-salt detergents are recommended when using greywater for irrigation.

Why choose this system

Automatic backflushing greywater diversion

Filters and pumps suitable household greywater to an appropriate subsurface greywater field.
Automatic backflushing filtration reduces routine filter-cleaning demand compared with manual-clean versions.
Supports practical reuse of laundry, shower and basin water where the site and field design are suitable.
Includes fail-safe diversion to sewer when the system is off for winter and during power outages.
Designed as a plug-and-play greywater diversion system that can be retrofitted to existing homes or installed on new homes.

System fit

Best suited for

Greywater sources

Laundry, shower and basin greywater.

User range

Average users of 2–5 people full-time in residence.

Site fit

Higher-flow greywater diversion and more difficult land-application layouts, including hilly to steep terrain.

Inlet size

Designed to receive greywater from one 100mm connection.

Basic specifications

Core product details

Product type

Automatic GreyFlow™ PS-AG greywater diversion unit with backflushing filtration.

Model

PS-AG-S4 Automatic 400W.

Pump

400W pump with float-switch operation.

Inlet / outlet

100mm inlet and 25mm outlet.

Capacity

50L.

Max head

21m.

Max flow

180 LPM.

Filter

Large 250mm pre-filter with automatic backflushing.

Certification

WaterMark and IAPMO-certified.

Warranty

2 Year warranty.

How it works

Filtering, pumping and fail-safe diversion

Receives suitable greywater from laundry, shower and basin sources.
Filters greywater through a large 250mm pre-filter to help protect the pump and irrigation system.
Uses automatic pump activation by float switch.
Backflushes the filter automatically to reduce regular hands-on filter cleaning.
Pumps filtered greywater to a garden irrigation or subsurface land-application pathway.

Maintenance and compliance

Automatic backflushing and site-specific installation

The GreyFlow™ PS-AG Plug & Play range includes manual-cleaning and automatic backflushing filtration options. This page is for the automatic backflushing model.

With the automatic backflushing option, filter cleaning is typically reduced to around once a year, depending on system use and site conditions.

The system includes fail-safe automatic diversion to sewer when the system is off for winter and during power outages.

Generally not suitable for kitchen greywater without a grease trap inline and appropriate design for fats, oils, food solids and heavier greywater loading.

WCTNZ® support

Greywater product guidance

WCTNZ® supplies GreyFlow™ greywater products in New Zealand with local product knowledge, documentation support and practical guidance for system selection and site fit.

Product tags

Greywater Diversion System (23)
,
GreyFlow™ (41)
,
Domestic Greywater Diversion System (GWDD) (33)
,
Greywater (39)

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