DOUBLE VALVE CONSTRUCTED FROM UNITARY SINGLE VALVES

摘要

A double valve includes a first unitary valve assembly and a second unitary valve assembly. Each unitary valve assembly includes a first outlet port, a second outlet port, and a spool. A first pilot assembly and a second pilot assembly are coupled to the first unitary valve assembly and the second unitary valve assembly, respectively. A plate is coupled to the unitary valve assemblies and includes a passage to provide a first common outlet passage that is coupled to the respective first outlet ports of the unitary valve assemblies and a second common outlet passage that is coupled to the respective second outlet ports of the unitary valve assemblies. When the spools are in a first position, fluid flows through the first common outlet passage, and when the spools are in a second position, the fluid flows through the second common outlet passage.

主权项

1. A double valve comprising:
a first unitary valve assembly including a first outlet port, a second outlet port, and a first spool; a second unitary valve assembly including another first outlet port, another second outlet port and a second spool; a first pilot assembly coupled to the first unitary valve assembly; a second pilot assembly coupled to the second unitary valve assembly; and a plate coupled to the first unitary valve assembly and the second unitary valve assembly, the plate including respective passages to provide a first common outlet passage coupled to the first outlet port and the another first outlet port and a second common outlet passage coupled to the second outlet port and the another second outlet port; wherein, when the first spool and the second spool are in a first position, fluid flows through the first common outlet passage, and when the first spool and the second spool are in a second position, the fluid flows through the second common outlet passage, and wherein, when at least one of the first spool and the second spool is in an incorrect position, the fluid does not flow through either the first common outlet passage or the second common outlet passage.