NP SLIM PCA Spray SLC Aerator – Part No. 438558120
- Robert Kurek
- Nov 15
- 3 min read
The Neoperl SLIM PCA Spray SLC Aerator (Part No. 438558120) is a high-performance water-saving component designed for modern commercial, institutional, and high-footfall wash-basin installations. With its precise flow control, slim housing and anti-limescale features, it stands out as an efficient upgrade for facilities looking to reduce water and energy consumption.
Key Features and Benefits
Stable 1.0 gpm Flow Rate
This aerator is engineered to deliver a maximum flow of 1.0 gallons per minute, providing a significant reduction in water usage compared to older high-flow aerators. The controlled flow makes it ideal for sustainability-focused buildings that aim to lower operational costs and improve efficiency.
Pressure-Compensating Technology (PCA)
The built-in PCA mechanism ensures a consistent flow regardless of pressure fluctuations in the plumbing system. This is especially valuable in multi-storey buildings, large commercial facilities, and places where water pressure varies throughout the day.
Smart Lime Care (SLC) Surface
Hard water can cause limescale buildup on standard aerators, reducing performance and increasing maintenance needs.
The SLC surface on this model helps resist scale deposits, making the aerator easier to clean and maintaining long-term performance even in areas with very hard water.
Slim Housing Design
The “SLIM” series features a low-profile, compact design suitable for narrow or modern faucet spouts.
Part No. 438558120 uses a male M20×1 thread, making it compatible with many contemporary tap designs and ideal for retrofit projects where space is limited.
Spray-Type Water Stream
The aerator produces a soft, dispersed spray stream. This type of flow improves rinsing efficiency, enhances user comfort, and helps reduce splashing—perfect for public washrooms, commercial basins and any environment where hygiene and convenience matter.
Applications
Public and Commercial Washrooms
The aerator is particularly suited for areas with high usage such as offices, schools, restaurants, shopping centres, healthcare facilities and airports. Its durability and stable flow performance make it an excellent choice for large installations with multiple basins.
Retrofit and Water-Saving Projects
Replacing outdated aerators with this 1.0 gpm model can drastically reduce water consumption. For facilities seeking measurable results in sustainability targets, this aerator provides an easy and cost-effective upgrade.
Hard-Water Regions
Thanks to the SLC treatment, this aerator is highly recommended for regions with high mineral content in the water supply. It reduces service time and extends product life.
Water and Energy Savings
Older faucets often run at 2.2 gpm or more. Reducing this to 1.0 gpm can save thousands of litres of water per year per tap.
Lower water use also means less hot water needs to be heated, resulting in tangible energy savings—an important factor for both environmental impact and cost reduction.
When multiplied across a facility with dozens or hundreds of taps, the savings become substantial, supporting long-term sustainability and operating cost efficiency.
Installation and Maintenance Tips
Confirm that the tap uses an M20×1 male thread before installation.
Ensure the water pressure in the building falls within a typical operating range where PCA functions optimally.
Regularly inspect the aerator and quickly wipe away any mineral deposits—the SLC surface makes this very easy.
For best results in large buildings, pair installation with a water-usage audit to calculate savings and demonstrate return on investment.
Why This Aerator Fits the Malvern Aqua Tech Mission
Malvern Aqua Tech focuses on practical, measurable technologies that reduce water waste, cut energy use and support sustainable living.
This Neoperl aerator aligns perfectly with those values by offering:
Reliable water flow control
Significant reduction in water consumption
Lower energy usage through reduced hot-water demand
Low maintenance and long lifespan
Superior performance in commercial settings
It is an excellent example of how small components can deliver major savings.
Summary
The Neoperl SLIM PCA Spray SLC Aerator (Part No. 438558120) is a premium, high-efficiency faucet aerator designed for commercial washrooms and sustainability-focused retrofit projects. Its slim profile, pressure-compensated performance, scale-resistant surface and water-saving spray stream make it a smart, long-term investment for any facility.
As the manufacturer, Neoperl UK is widely recognised for producing high-quality, precision-engineered water-saving components used across Europe and worldwide. Their products are built on decades of innovation in flow control, hygiene, and sustainability. Choosing Neoperl UK means installing components that are trusted, reliable and engineered to meet modern environmental and performance standards.
Thank you for visiting Malvern Aqua Tech! I appreciate you taking the time to explore our insights on water- and energy-saving solutions. If you found this article helpful, I invite you to browse our other resources for more practical tips on creating a sustainable and cost-efficient home or business.
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Let’s make sustainable living simple and effective — together.
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