HELP! What kind of valves are these?

[sixline]

I have these two valves on my Red Sea Max S400. One of them is open and the other is closed.

I want to close the open one, so I shut off the water and tried to turn it, but it is resisting quite a bit. It looks like you may need to pull it out and then turn it? Or...?

What kind of valves are these and how do I operate them! Silly question I know, but..

.

 

[vetteguy53081]

Shut-off valves. Right now its in the OFF position. Turn them til they nine up with piping and flow is open
Actual name os ball valve

 

[Twoddler]

Looks like a standard ball valve, it will be seized, take apart and clean.

 

[sixline]

Thanks. I took it apart, and now I see why it's called a ball valve.

Cleaned and it's working fine now...