Available Valves:

PSP California Valves
Pacific Seismic Products is the world's leading manufacturer of seismic valves.  PSP valves are available in sizes ranging from 3/4" - 8".  PSP is sure to have a valve that will suit any need. 

    Little Firefighter Valves
    Little Firefighter offers a great option geared more towards the homeowner.          
    The valve is available in sizes ranging from 3/4" - 2".