One-way backflow protection valves for preventing the backflow of water through pipes. Simple and reliable units for protecting rainwater tanks, filter units etc. from the back-flow of undesirable fluids, e.g. where an overflow is connected to a combined sewer.
Available to fit 100mm, 150mm or 200mm pipe diameters and in two versions; in-line and terminal. The in-line version is for fitting into the pipe run, and must have an access point above it for maintenance. The terminal version is for fitting to an open pipe end e.g. where a pipe discharges into a ditch or chamber.