what is a stop fitting? 1 in x 3/4 in reducer?

[Murphysf]

Hi

I need to change the old gate valve with a ball valve that is for the main that is just inside my garage door.

The main look like 1" and there is a reducer to 3/4.

I see Home depot has 1 with and without a stop fitting. Which one do I want and why (I am asking as I like to learn)?

I noticed the one with the stop fitting says :

• Ideal for potable water, air conditioning and refrigeration

Everbilt 1 in. x 3/4 in. Copper Pressure Fitting x Cup Reducer C6002HD134 - The Home Depot

Find the NIBCO 1 in. x 3/4 in. Copper Pressure FTG x C Fitting Reducer C600-2, connector used aboveground for water supply piping from The Home Depot

www.homedepot.com

Everbilt 1 in. x 3/4 in. Copper Pressure Cup x Cup Reducing Coupling with Stop Fitting C600HD134 - The Home Depot

Acquire the NIBCO 1 in. x 3/4 in. Copper Pressure C x C Coupling with Stop C600, fitting used aboveground for water supply piping at The Home Depot

www.homedepot.com

 

[Reach4]

Suppose the two pipes are in line already. Seems to me that with the no-stop fitting, you could deflect the pipes to the side, slip the no-stop fitting over the 3/4 pipe a distance, bring the two pipes back into alignment, and then slide the fitting back toward the 1 inch pipe.

 

[Sponsor]

 

[Breplum]

no-stop fittings are for sliding a fitting on in tight spots.
the "Ideal for potable water, air conditioning and refrigeration" is nothing. Reads like AI filler.