Series QVC and QTA have socket or threaded pipe connectors, Santoprene (TPV) seats, full porting, and 150 psi rating. Series QVC is offered in 1/2 to 4 in. sizes in gray or white PVC. Series QTA comes in 1/2 to 2 in. sizes in gray or white PVC and includes socket and threaded True Union end connections. Both series offer quarter-turn operation.