Single-orifice
Membrane Aerator

A fine-bubble diffuser for aerated biological filters: an ABS air branch pipe carrying one or more membrane stations, each sealed by a rubber membrane disc with a single orifice. Air pressure lifts the membrane and releases the air through that one orifice; when the blower stops the membrane reseats and closes the orifice to the water.

Request a Quote Technical Details

ABS + EPDMBody & membrane

Single orificeMembrane design

BAFTypical duty

On requestSize & airflow

Single-orifice membrane aerator — two ABS aerator bodies with black membrane discs held by toothed clamp rings

Type

Single-orifice membrane diffuser

Body

ABS air branch pipe

Membrane

EPDM rubber, single orifice

Mounting

Tank-floor pipe rows or filter plate

Price

On request

Why this aerator

One orifice per membrane,
closed when the air stops

A single orifice under an elastic membrane does the metering, and the body pipe carries a row of those membrane stations — so a whole aeration row is built on one pipe instead of on many separate fittings.

Single-orifice membrane

Each membrane covers one air port and releases its air through a single orifice in the centre of the disc, so air leaves from one point per station and the elastic membrane seals that orifice again as soon as the air supply stops.

Clamped, replaceable membrane

The membrane sits on the body pipe between two moulded toothed clamp rings. The rings hold the disc flat over the air port, and a worn membrane can be released and renewed at its own station rather than renewing the whole body.

A row on one pipe

The membrane stations are carried on a single ABS body pipe, so one air connection feeds a run of aeration points and the grid is assembled from fewer pipe runs and fewer joints on the tank floor.

Specifications

Technical parameters

Item	Specification
Diffuser type	Single-orifice membrane (rubber-sleeve) fine-bubble diffuser
Product form	ABS air branch pipe with one or more membrane stations; one membrane disc per station, held by two toothed clamp rings
Body material	ABS — other grades on request
Membrane material	EPDM rubber with a single orifice — other elastomer grades on request
Membrane form	Disc seated over the air port of the body pipe, sealed by its clamp rings
Orifice	One per membrane, at the centre of the disc — diameter on request
Stations per body pipe	On request — one or more per pipe, to suit the grid
Body pipe bore	On request
Overall length per body pipe	On request
Air connection	On request — connection type and thread confirmed with the air main
Support foot	Centre support foot with base plate (see gallery) — configuration on request
Mounting	In rows on the tank floor; long-stem version for mounting through a filter plate, membrane head above the plate
Airflow per unit	On request
Service area per diffuser	On request
Bubble diameter	On request
Oxygen utilisation	On request
Recommended water depth	On request
Service temperature	On request
MOQ / price	On request — confirm configuration, quantity & destination

The build described above is the standard construction of this diffuser type. Bore, length, station spacing, orifice size and every performance figure are confirmed in writing with the quotation, because diffuser performance depends on tank or filter-plate layout, water depth, airflow rate and diffuser density.