The Lafferty Model 20SS Bypass is a stainless steel airless foam and spray system that runs off a pressure washer, applying two different chemicals and then rinsing at full pressure from the same trigger gun. There is no compressor and no air line: the foam wand draws atmospheric air as the water passes through it, giving a wet foam that clings to vertical surfaces. Two chemical pickups, each on its own ball valve, let you run an alkaline detergent and an acid brightener from the one unit, and no chemical passes through the washer pump. To rinse, move the bypass valve across and fit your washer's own wand and nozzle to the gun.
This is part number 07 969752, supplied as the stainless steel base with the injector, bypass and chemical valves, plus the airless foam wand and spray nozzle. The trigger gun and discharge hose are optional and are not included with this model. Wetted components are built for chemical service, but concentrations and temperatures vary, so confirm your chemicals against the SDS and send the product details through to us. Tell us your washer flow when you request a quote and we will confirm the metering tip.
Applications: Truck, fleet and heavy plant washdown; food processing and plant sanitising; two-chemical foam cleaning and rinsing from a pressure washer
Part Number
07 969752
Model
Model 20SS Bypass 2-Way Airless Foam/Spray System
Operation
Pressure washer fed, airless, no compressed air required
Water Supply
Pressure washer rated 13 to 21 litres per minute (3.5 to 5.5 GPM)
Discharge Hose
3/8 inch internal diameter, not supplied with this model
Chemical Pickups
Two, each on its own ball valve, for two chemicals or two concentrations
Chemical Metering
Venturi injector with interchangeable metering tips
Rinse
Move the bypass ball valve to rinse and fit your washer's own wand and nozzle
Applicators
Airless foam wand for clinging foam, spray nozzle for straight chemical, both quick connect to the gun
Mounting
Stainless steel base plate, wall mount
Construction
Machined stainless steel injector body and base
Wetted Components
Chemical-resistant, confirm against your SDS
Pump Protection
No chemical passes through the pressure washer pump
