a thread sealing paste on female thread.
We recommend Loctite 5331 or other approved
methods such as tephlon tape.
graphs in Which Foot
Valve or Which
Check Valve to select the correct size
your Foot Valve off the bottom of your water
source to eliminate the valve sucking up
you are using chemicals or have any special
requirements that you wish to use your valve
in, go to the Valve
Chemical resistance page or don't hesitate