Abstract: A pig launcher or receiver device is designed for connection in-line in a fluid pipeline. The device has a housing (10) with a fluid flow passage therethrough and ends for connection to the pipeline. A pair of spaced rotary ball valves (19, 20) is disposed in said housing (10) for isolating an inner section (17) of the flow passage between the valves. Each ball valve having a port (26) therethrough and is rotatable between an open position in which the port is m fluid communication with the flow passage and a closed position in which it blocks the flow passage. An access passage (15) in the housing is connected to the inner section (17) of the flow passage between the ball valves and has an opening through which a pig can be inserted into, or removed from, said inner section of the flow passage by using a pig trap cartridge (22). The device is compact, safe and simple to use.

Abstract: A method and apparatus for agricultural product production with heat and moisture recovery and control. Some embodiments transfer heat and moisture from a warm, moist exhaust air stream to incoming agricultural material, steam condition the material, pelletize the material into warm pellets, cool the warm pellets with make-up air to produce the warm, moist exhaust air used to transfer heat to the incoming material and to produce cooled pellets, wherein the cooled pellets are at a temperature lower than the warm moist air. In some embodiments, the system includes counter-flow devices to transfer heat and moisture. In some embodiments, a controller is used to adjust system devices and overall system flow. In some embodiments a water sprayer, to moisten agricultural product when the product is over dry, and an air flow controller, to slow air flow through the pellet dryer/cooler when ambient temperatures are dryer/cooler, are provided.

Abstract: A method and apparatus for agricultural product production with heat and moisture control with optional heat and moisture recovery. Some embodiments transfer heat and moisture from a warm, moist exhaust air stream to incoming agricultural material, steam condition the material, pelletize the material into warm pellets, cool the warm pellets with make-up air to produce the warm, moist exhaust air used to transfer heat to the incoming material and to produce cooled pellets, wherein the cooled pellets are at a temperature lower than the warm moist air. In some embodiments, the system includes counter-flow devices to transfer heat and moisture. In some embodiments, a controller is used to adjust system devices and overall system flow. In some embodiments a water sprayer, to moisten agricultural product when the product is over dry, and an air flow controller, to slow air flow through the pellet dryer/cooler when ambient temperatures are dryer/cooler, are provided.