Here is a easy way to receive the correct 3/4" quick coupler valve, matching key and garden hose shut controll valve. You will receive 1 commercial quality red brass quick coupler valve with  high vis yellow cover ,1 red brass quick coupler valve key and garden hose valve. Both the key and the valve is compatable with the Rainbird #33/Buckner/lawnlife/Weathermatic and more, quick coupler double or single lug valves. This Combo was made overseas by an American company, I have sold thousands of each of these pieces to cities,schools, landscapers and here on and never had a return due to quality.
3/4" NPT inlet for your incoming pipe
1/2" female threads at top of key
3/4" male threads at top of key
garden hose valve will screw right on to the key and your hose.
Ships to your door for just $6.00 and only $1 shipping for each additional set!
When choosing a quick coupler valve it is important to buy a red brass valve for durability. The reason being, the brass key and the valve rub againest each other when you turn it in. Many cheap valves now being sold, will wear quickly, causing them to leak and the key to not remain in place.