Installs on solution hose between hose and the quick disconnect that you couple to your wand. Stainless steel with small black or blue handle. Handle is metal coated with vinyl, not plastic.
3/8" Mip X 3/8" Fip ends.
And this one's rated up to 1000 PSI.
Stainless construction makes if perfect for near or on ocean use.

Buy More $ave More. 

Ball valve install between the end of the hose and the brass quick disconnect at the end of the hose.
Use to turn the water pressure off at the end of the hose so you do not have to walk back to the machine to turn off the water pressure
Turning off the water pressure at the end of the hose is a huge time saver.
Example:  If I am on a second story cleaning job and my carpet cleaning machine is on the first floor, to change from my injection spray, to my hand tool, or to my floor wand, to my under the bed cleaning tool, I have to remove the water pressure.  So I have to go down stairs and turn my machine off, go upstairs and change my tool out, go down stairs and turn my machine back on.  I could avoided all this calorie burning by just turning the water pressure off at the end of my solution hose, changed out my tool, turn the ball valve back on and go right back to work. 

Specification	Value
ITEM INFO	Flag Handle, NBR O-Ring
CASE	150
SHAPE	M x F SS Mini Ball Valve
SIZE	3/8"
D	0.276
H	0.984
L	1.693
W	0.898
WEIGHT	0.19

Available in 1/8", 1/4", 3/8", and 1/2" Pipe
150 units to a case box.