As pictured, You will receive: 1 Valve , no more, no less.

This maybe available for less here:

http://www.ebay.com/sch/bert610/m.html?item=322436869341&hash=item4b12bc2cdd%3Ag%3Au28AAOSwvzRX0ttB&rt=nc&_trksid=p2047675.l2562

Text questions to: (707) 574-8863

For reference:

•       ACE hardware sells hose barbs for $2.49 EACH! (expensive)
•      Local hardware stores do NOT carry sintered vents/filters
•      These valves are much easier to mount with a proper bracket.  
•      This seller has brackets and barbs & vents : http://www.ebay.com/sch/m.html?item=331686805813&hash=item4d3a130135%3Ag%3ANzsAAOSwAYtWJngZ&_ssn=union7&_sop=15