Shop Triac Series 22 Pneumatic Spring Return Ball Valve: 2-Piece Economy Ball Valve, Full Port, 316 SS Body, Ball & Stem, RTFE Seats, 800/1000 Psi, Direct Actuator Mount, Threaded Ends, 1/4"-3".. Shop Triac Series 55 Pneumatic Spring Return Ball Valve: 3-Piece Industrial Ball Valve, Full Port, 316 SS or CS Body, 316 SS Ball & Stem, RTFE Seats, 800/1000 Psi, ISO Bracket Mounting Pad, Threaded ...