When it comes to value and performance, it is hard to beat Sporlan brand solenoid valves.  These solid brass valves are hermetically sealed against leakage and can be mounted in any position.  We stock two basic valve body sizes (Sporlan 3 and 6) with a choice of solder or flare connections. 

#3 valves are recommended for systems less than 1/2 HP and #6 valves for larger systems.   The coils must be purchased separately and are compatible with either body.