NP 1/2″ PCW-01 Shower Flow Regulator – 9 L/min - Part No. 58863910000
- Robert Kurek

- Nov 15
- 3 min read

The Neoperl 1/2″ PCW-01 Shower Flow Regulator (Part No. 58863910000) is a highly efficient water-control component designed to stabilise shower flow at 9 litres per minute. Using precision pressure-compensating technology, it ensures consistently comfortable showering performance while significantly reducing water and energy consumption.
Its 1/2″ connection format makes it compatible with a wide range of shower hoses, mixers and plumbing fittings, making it an excellent choice for both domestic and commercial installations.
Key Features
Consistent 9 L/min Flow Rate
The regulator maintains a steady 9 L/min flow, offering a balance between water efficiency and strong shower performance. This flow rate is ideal for users who prefer a fuller shower experience without excessive water use.
Pressure-Compensating Performance
Whether pressure rises or drops within the plumbing system, the PCW-01 automatically adjusts to maintain the target flow. This ensures users enjoy a stable, predictable shower stream throughout the day.
1/2″ Standard Connection
The regulator’s universal 1/2-inch design allows quick installation between shower hoses, mixers or internal fittings. This makes it highly suitable for easy retrofits or upgrades.
Robust and Long-Lasting Design
Made with durable Neoperl components, the PCW-01 withstands everyday use, high temperatures and hard-water exposure. It delivers long-lasting performance with minimal maintenance requirements.
Supports Hot-Water and Energy Savings
By limiting shower flow, the regulator reduces overall hot-water consumption. This results in lower energy bills and a significant reduction in environmental impact—especially valuable in homes, hotels or commercial facilities with frequent shower use.
Applications
Standard residential showers
Hotels, guest houses and rental properties
Gyms, leisure centres and sports facilities
Student accommodation and hostels
Commercial and workplace shower rooms
Buildings needing predictable water usage
Water and Energy Benefits
Unregulated showers commonly consume 12–15 litres per minute. Reducing this to 9 L/min can save up to 40% of water per shower while still maintaining a comfortable flow.
Since showers account for a major share of hot-water usage, the associated energy savings are considerable. In buildings with multiple showers, this regulator offers substantial annual reductions in both water and gas/electric heating costs.
Installation and Maintenance Notes
Fits standard 1/2-inch shower hose or mixer connections
Installation requires no specialist tools
Suitable for mixer, thermostatic and many electric shower systems
Minimal maintenance—periodic inspection ensures continued performance
Ideal for retrofits and quick installations
Why It Supports the Malvern Aqua Tech Mission
Malvern Aqua Tech’s mission is to deliver practical, effective and measurable solutions that reduce water and energy use. This Neoperl PCW-01 regulator fits that mission perfectly by offering:
Significantly reduced shower water waste
Lower hot-water energy demand
Reliable, pressure-stable shower performance
Long-term durability and excellent value
It is one of the most impactful upgrades for any property seeking improved sustainability with minimal cost and effort.
Summary
The Neoperl 1/2″ PCW-01 Shower Flow Regulator – 9 L/min (Part No. 58863910000) is a durable, efficient and easy-to-install component that stabilises shower flow, reduces water usage and lowers energy consumption. Its pressure-compensating design ensures consistent performance, making it ideal for both home bathrooms and commercial shower facilities.
Neoperl UK, the manufacturer, is widely recognised for its high-quality water-control components. Known for engineering excellence and long-term reliability, Neoperl UK products are trusted across the plumbing industry to support sustainable water use, improve user comfort and reduce operational costs. Choosing Neoperl UK means choosing proven technology built on decades of innovation and expertise.
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.
If you’re looking for personalised guidance or want to discover the best water- and energy-saving devices for your specific needs, feel free to get in touch. You can easily book a consultation through:
Let’s make sustainable living simple and effective — together.




Comments