Abstract: A cage assembly for a valve includes a hollow first member having a first end for operably connecting to a valve body and an opposed second end for receiving a hollow second member. The assembly includes the second member having a third end for receiving a hollow third member, the second member including first openings formed through a sidewall, and the third member having a fourth end for operably connecting to the valve body. The assembly includes when assembled inside the valve body, the first member, the second member and the third member forming an aligned second opening therethrough, the second opening having a uniform cross section, for slidably receiving a valve closure element for controlling a flow of fluid through the first openings during operation of the valve.

Abstract: A cage assembly for a valve includes a hollow first member having a first end for operably connecting to a valve body and an opposed second end for receiving a hollow second member. The assembly includes the second member having a third end for receiving a hollow third member, the second member including first openings formed through a sidewall, and the third member having a fourth end for operably connecting to the valve body. The assembly includes when assembled inside the valve body, the first member, the second member and the third member forming an aligned second opening therethrough, the second opening having a uniform cross section, for slidably receiving a valve closure element for controlling a flow of fluid through the first openings during operation of the valve.

Abstract: A stem assembly for a valve including a shaft having a longitudinal axis and a first end having a cross section less than a cross section of the shaft, and a protrusion near the first end extending away from the axis. In response to the first end and the protrusion being positionable inside a compartment of a valve plug having an opening in fluid communication with a fluid of a valve during operation of the valve, the first end and the protrusion being movable between a first position and a second position relative to the valve plug. In the first position, the first end blocking the opening for preventing fluid flow therethrough, and in the second position, the first end being movable away from the compartment opening for permitting fluid flow through the opening.

Abstract: A control system for a pumping system in a pumping vehicle is disclosed. The control system includes a valve controller unit having an addressable communication module configured to exchange control and status data regarding a pump valve with at least one valve interface unit. The control system also includes a valve interface unit having an addressable communication module configured to exchange control and status data regarding a pump valve with at least one valve controller unit. The control system further includes a serial communication link communicatively connecting the valve interface unit and the valve controller unit.

Abstract: A control system for a pumping system of a pumping vehicle is disclosed. The control system includes a valve control unit communicatively connectable to a plurality of valve interface units of one or more pumping vehicles, the valve control remote from at least one of the one or more pumping vehicles and configured to independently exchange control and status data with the plurality of valve interface units regarding at least one pump valve associated with each of the plurality of valve interface units. The control system also includes a valve interface unit communicatively connected to the valve control unit, the valve interface unit configured to exchange control and status data regarding the pump valve with the valve control unit. Methods of communicating commands in a control system and a fire apparatus are also disclosed.