The D40WL runs on water pressure alone, eliminating outage risk and electrical hazards on commercial sites, rural water cooperatives and seasonal-use facilities (campgrounds, parks, lodges).
Set the injection ratio once between 1:3000 and 1:150. Whether your system delivers 2.2 GPM at night or 40 GPM at peak demand, the chlorine concentration stays the same — no operator intervention required.
With 1" NPT connections (vs the D14WL's ¾"), the D40WL is dimensioned for booster stations, light commercial buildings, rural water associations, food and beverage potable lines and multi-tap park installations.
Draws chlorine solution from a tank below without an auxiliary pump.
Independently tested for drinking water safety and low-lead compliance — required by most US states and Canadian provinces for potable water service. Full background on our NSF 61 Certified Chlorinators page.
Parameter | Value |
Flow rate | 2.2 – 40 GPM (8.32 – 151 LPM) |
Injection ratio | 1:3000 to 1:150 (0.03% to 0.7%) |
Operating pressure | 4.3 – 85 psi (0.3 – 5.9 bar) |
Connections | 1" NPT |
Self-priming | Up to 4 m (13 ft) |
Compatible chemicals | Sodium hypochlorite (NaOCl) |
Certifications | NSF/ANSI/CAN 61 & 372 |
CAnnual Service | Seal Kit Replacement |
Application | Why D40WL |
Rural water associations & community water systems (50–500 connections) | Higher capacity than D14WL, same NSF cert, same non-electric simplicity |
National parks, campgrounds, lodges, recreational potable water | Off-grid resilience — field-proven at Pictured Rocks (see the case study) |
Schools, clinics & light commercial buildings on well water | Continuous protection at the building service entrance |
Food & beverage potable inlet disinfection | 1" service line, NSF 61 certified, no electrical hazard in wet environments |
Agriculture & livestock high-flow potable water | Stable dosing across barn/feedlot daily demand curves |
Emergency & camp deployments | Emergency & Off-Grid pillar for kit configurations |
