The NP PCW-01 Washer Regulator offered by Malvern Aqua Tech is a compact washer with dual functionality—effectively sealing your connection and regulating water flow. Designed for ½″ shower hose fittings or G½″ shower heads, this high-performance component is an ideal and budget-friendly retrofit for any shower system.
 
Key Benefits
Water-Saving Efficiency – A simple, low-cost upgrade that helps reduce both water usage and energy consumption during showers.
Discreet Design – Concealed within the fitting, it remains invisible from the outside—making it theft-resistant and maintaining aesthetics.
Secure Fitment – Equipped with retaining tabs to ensure stable and reliable placement.
Quick Installation – Easily fits into any ½″ shower hose fitting—perfect for retrofitting without the need for tools or professional help.
 
Colour-Coded Elastomer for Easy Identification
The elastomeric component encircling the flow regulator is colour-coded for quick visual identification:
Metric flow rates = Grey elastomer (as in this model, 4 L/min)
US flow rates = White elastomer
This coding method enhances product clarity without altering technical functionality or certification.
 
Ideal Applications
Retrofitting existing shower hoses or hand-held shower assemblies.
Use in G½″ fittings where discreet and efficient flow reduction is desired.
 
Technical Specifications
Specification
Details
Flow Rate
4 litres/min
Thread Size
½″ (G½″)
Main Functions
Flow regulating and sealing
 
Malvern Aqua Tech Advantage
Combining durability, efficiency, and ease of installation, the Malvern Aqua Tech NP PCW-01 Washer Regulator offers a smart, water-saving upgrade for any shower system—while staying hidden from view and securely in place.