| http://www.w3.org/ns/prov#value | - d (II) a valve assembly comprising a valve seat secured within said hollow sprinkler head assembly tube, a valve engageable with said seat, said valve including a head and a stem extending therefrom, said stem being provided with a head, means in said valve assembly to support and guide said valve for reciprocal motion relative to said seat, said valve stem being normally in a lower position with
|
