1/2″ PEX × 3/8″ Angle Stop Valve — Quarter-Turn Chrome Shut-Off

When the water line comes out of the wall instead of up through the floor, the angle stop is what turns the corner. This valve takes a 1/2″ PEX stub-out and redirects it 90° up to the fixture, so the flexible riser to a faucet or toilet runs clean up the wall with no kinked loop. The PEX inlet crimps on with a copper ring or stainless clamp; the 3/8″ compression outlet tightens onto a standard supply riser with a nut and ferrule. Inside is a quarter-turn ball rather than an old multi-turn washer stem, so it seats positively every time and won't seize half-open after years untouched behind a toilet. The body is lead-free brass under polished chrome, clean enough to leave exposed under a wall-hung sink. It's the small angle that keeps a wall-stubbed supply tidy and shut-off-ready.