I made my QFD and will try to get a picture here. I was going to use the PVC valve like I've seen others use, but then I saw a hose adapter for $7 that was much easier to turn, especially one handed, and decided to use that. It replaced two parts I would have needed otherwise so the cost was basically the same and I like it a lot better.
The 3/4" 90 degree elbow works perfectly. The smaller end of the elbow tapers inside to the perfect diameter.
I was surprised at how much force you have to use to push down on the nozzle or the water pressure will push the gun out.
The simple QFD is also easy to use when refilling other guns, unlike the SS QFD which could not be used to refill reservoirs.
Complete parts (4) list:
Gilmour Single Flex Connect Shut-Off Hose Adapter - $7http://www.homedepot.com/p/Gilmour-Sing ... htype=text
Charlotte Pipe 3/4 in. PVC Sch. 40 90-Degree Spigot x S Street Elbow - $1.38http://www.homedepot.com/p/Charlotte-Pi ... htype=text
Charlotte Pipe 3/4 in. PVC Sch. 40 Female S x FPT Adapter - $0.69http://www.homedepot.com/p/Charlotte-Pi ... htype=text
3/4 in. x 2 ft. PVC Sch. 40 Pipe - $1.72 - only used about 2" of this 24" pipehttp://www.homedepot.com/p/VPC-3-4-in-x ... /202300505