Valterra 6201, 2.0"" 3-piece slide valve is sometimes called a slice valve, because of the guillotine action. Spa slice valve paddle slides up and down to open and close the valve. Simple operation is often used as a spa shut off valve. 3-piece design allows for replacement of one side flange, without replacing and replumbing the entire valve. Both sides of Valterra 6201 are 2"" slip socket connections.