How do these plumbing fittings work?

[The Dark Side]

I removed my ice maker and need to remove the water line feeding it (middle "T" connection) or block off the "T". How do these plumbing fittings work?

Thanks in advance!

 

[HawkX66]

Slip the black snap ring off the connector then slide the end of the fitting closest to the water hose down/away from the hose. The hose will then slide out.

 

[KevinC]

Slip the black snap ring off the connector then slide the end of the fitting closest to the water hose down/away from the hose. The hose will then slide out.

+1 Just try not to loose/break the lock ring.

-Kevin

 

[The Dark Side]

thanks

 

[Skuza]

Sometimes it helps to release the couplers by applying pressure to the hose forcing it into the coupler as you depress the ring. Then pull out of the coupler.

 

[Tim Fila]

What are those fittings called?

and what size are they?