3-1/2" sink opening
This Fisher Drainking waste valve can help you drain a sink without reaching into its dirty water.
With a stainless steel flat strainer and clamping ring, this waste valve also has a stainless steel rotary ball valve that’s secured by two Teflon seals.
The unit’s “clear through” opening makes disassembly unnecessary if snaking is required. Boasting a 12.0 GPM drain rate, this Drainking waste valve also possesses 2” NPT male and 1½” NPT female outlet threads.