You can sit the Snack Water Trough in a pen, or position it between two pens.
For the best result, hang the trough on a 25mm rail.
Do not force the trough onto a wider rail as it may crack the base of the hooks.
The float valve has a 20mm fitting to easily connect the trough to your water supply and is rated to pressure up to 80psi.
The float valve is set to 8L. If you see the trough is over filling you can adjust the valve with a screw driver.