Abstract: A safety system is provided for an anhydrous ammonia nurse tank (4) pulled by a tractor (1) with a tool bar applicator (2). The system includes a safety valve (10), and a breakaway coupling or connector (12) along a flexible hose (11) from the nurse tank to the applicator. The safety shutdown valve (10) closes in response to a break in the electrical connector in the event of a pull away or manual activation of a safety switch.

Abstract: A safety system is provided for an anhydrous ammonia nurse tank (4) pulled by a tractor (1) with a tool bar applicator (2). The system includes a safety valve (10), and a breakaway coupling or connector (12) along a flexible hose (11) from the nurse tank to the applicator. The safety shutdown valve (10) closes in response to a break in the electrical connector in the event of a pull away or manual activation of a safety switch.

Abstract: A thermowell assembly (20) shown in FIG. 2 is positioned in a pipeline (10) for sensing the temperature of the fluid medium in the pipeline (10) for transmitting the sensed temperature to a meter (12). A temperature sensing probe is received within a temperature conducting tube (36) forming a thermowell and having a plurality of annular fins (40) extending thereabout. In the embodiments of FIGS. 1–7, a liquid (50) is provided in an annular space between the thermocouple (28) and the temperature conducting tube (36). Non-metallic members (70, 74, 80) are positioned between the pipeline (10) and the temperature transmitting tube (36) to isolate thermocouple (28) from ambient changes in the temperature of metal pipeline (10) which may result in an error in the temperature of the flow medium sensed by the thermowell assembly (20). High temperature embodiments shown in FIGS.