Ball Valve Stainless

ball valve
any valve that checks flow by the seating of a ball
A ball valve is a valve with a spherical disc, the part of the valve which controls the flow through it. The sphere has a hole, or port, through the middle so that when the port is in line with both ends of the valve, flow will occur.
A one-way valve that is opened and closed by pressure on a ball that fits into a cup-shaped opening
(Ball Valves) Contains a slotted metal or plastic ball that aligns with the hot and cold water inlets when rotated by the faucet handle. Ball valves are reliable but tedious to fix. A metal valve is more durable than plastic under most circumstances.

stainless
(of a person or their reputation) Free from wrongdoing or disgrace
Stainless is a WebKit-based web browser for Mac OS X by Mesa Dynamics. Stainless started out as a technology demo to rival the multiple-process architecture of Google Chrome, but then went into its own direction.
Unmarked by or resistant to stains or discoloration
(of reputation) free from blemishes; "his unsullied name"; "an untarnished reputation"
stainless steel: steel containing chromium that makes it resistant to corrosion