Product review (4 stars): Almost identical replacement for AprilAire 760
This is very similar to the original, but beware, the valve orientation is flipped from the original.  If you install as is, you will have the flow arrow backwards and it will not work at all.  It is easy to fix:  Simply loosen the large nut on the end and carefully separate the valve from the solenoid.  You can flip and or rotate the bracket as needed to make it match your setup.

A previous review mentions the need to order the 4004 Strainer--this is NOT needed as the new valve comes with this part already installed.  I ordered the strainer based on the previous review--oops wasted my $$ on that.  Probably too inexpensive to return.

You may or may not need to replace the orifice, a little pinhole fitting that goes on the output side of the valve, stuck into the tubing.  If the pinhole is clogged or damaged, you need this part.  Make sure to get the correct one for your model.