What is an anti-siphon? Does Kingston carry them?

They are devices that have a one-way check valve function to stop the flow of possibly contaminated water back into the drinkable water supply.

The two primary functions are atmospheric back-flow preventer and act as a control valve, for instance, it holds the pressurized water for your sprinkler lines.

These devices are required by codes on plumbing fixtures or devices, for instance, utility sink faucets.

We may not carry the valve, but they are included and pre-installed in all our hand showers and utility faucets.