Chemical dispensing systems with integral backflow protection provide a means of mixing potable water with chemicals to provide the user with a chemical solution that is ready for use. In industrial and institutional cleaning operations, it is desirable and convenient to dispense cleaning solutions derived from potable water and concentrated products; however, a dispensing device connected to potable supply constitutes a cross-connection, which could be a source of contamination to the potable water.
ASSE 1055 identifies accepted methods of backflow protection, as well as test methods for evaluating backflow systems incorporated into a chemical dispensing system.
https://www.asse-plumbing.org/asse/standards/product/current-standards
ASSE 1055 Certified Lafferty Models
Ball Valve Mixing Stations
- 985100
- 985200
- 985300
- 985400
- 985450
Stainless Steel Mixing Stations
- 985100SS
- 985200SS
Push Lever Mixing Stations
- 981100
- 981200
- 981300
- 981400
- 981450
Gemini™ Mixing Stations
- 982025
- 982025PL