Stream patterns

Aerated streamAerators introduce air into the water stream to produce a stream soft to the touch and to reduce splash when the water strikes an object such as a glass or the bottom of a sink. Although the amount of air mixed water varies with the flow rate, NEOPERL aerators provide a splash-free water stream in all pressure conditions.

Laminar streamA non-aerated stream is also called laminar flow. Laminar devices exclude air and produce a crystal clear water stream while still reducing splash. Their use is recommended in medical facilities to prevent airborne bacteria from entering the water stream.

SprayIn low flow conditions where aerators and laminar devices would not perform properly, sprays provide full coverage of the hands during washing. The use of sprays is recommended on lavatories in public restrooms to reduce water consumption.

European standards

Flow rate class

Flow rate range

Dynamic pressure

Z 7.5 - 9.0 l/min 3 bar

A 13.5 - 15.0 l/min 3 bar

S 18.0 - 19.8 l/min 3 bar

B 22.8 - 25.2 l/min 3 bar

C 27.0 - 30.0 l/min 3 bar

D 34.8 - 37.8 l/min 3 bar

K 40.0 - 44.0 l/min 3 bar

M 60.0 - 66.0 l/min 3 bar

   Flow ratesEurope (EN 246)  Flow ratesNEOPERL

US Standards

Flow rate class -USA (A 112.18.1M)

Flow rate range Dynamic pressure

Lavatory / Sink faucet max. 2.2 gpm (8.3 l/min) 60 psi (4.14 bar)Shower head max. 2.5 gpm (9.5 l/min) 80 psi (5.52 bar)

Public lavatory faucet max. 0.5 gpm (1.9 l/min) 60 psi (4.14 bar)

FlowperformanceUSA

Environmental protection:= water saving effect, dueto reduction of low rateto 2.2 gpm

Customer satisfaction:sufficient water with lowpressure conditions

Fields of application

With standard aerators the flow rate goes up as the pressure increases. In certain markets and applications it is preferable to select the NEOPERL PCA® technology. The fields of application include:

• markets with a standard defining the maximum flow rate

• water conservation• plumbing systems where an even distribution of

water between various points of use is needed

the pressure compensating flow regulator produces – by means of the O-Ring – a constant flow rate regardless of pressure fluctuations

Working principle

A rubber O-ring selected for its precise hardness and dimension compresses on an engineered seating area (made of plastic material) to reduce the water passage

when the pressure increases and relaxes to open this passage when the pressure decreases.

The pressure compensating flow regulators used in PCA® aerators produce a constant flow rate regardless of pressure fluctuations.

Extension of the O-Ring at:

no pressure(0 bar)

increased pressure(5 bar)

reduced pressure(3 bar)