My laundry tub faucet has started leaking at the valve on the cold side. Fortunately, the leak only occurs when the valve is open. Here's a video I shot: It started when I began using a portable reverse osmosis filter attached onto the faucet. I figure the resistance caused the leak, or at least made it worse. Normally, I'd shut off the supply and remove the valve, but there's no shutoff for this other than the main shutoff for the house. So, if I break it on removal, I'm without water until I get it fixed. My question is whether this looks like a fairly straightforward valve that I can pick up at any hardware store, or whether finding a replacement is likely to be a problem. I'm hoping not to have to replace the entire faucet assembly. I note that there's a screw at the end of the valve handle, but it wasn't loose. Will I be able to remove the valve using that screw, or will I have to wrench it where it attaches at the manifold?