Side fill Ballcock.
Here we have the correct fill valve for the early wooden hightanks. This valve actually has the mounts cast into the valve body, so it’s just a matter of attaching the valve to the top of the tank. Supplied with a brass float rod and copper float, this valve’s inlet is 1/2″ IPS thread. No need for having to rig a mount like you would with the 75-R700 version.