Abstract: An improved liquid fertilizer distribution manifold operating in two stages. An accumulator piston located above the primary and secondary ports provides for two stages of flow. A broad range of regulated flow for site-specific farming results in precise, accurate and timely application of liquid fertilizer and pesticides. An elevated piston seal flange in the manifold allows flow to be exact with plugged or partially plugged primary orifices. Manifolds are produced in single tier and double tier arrangements to improve efficiency. The same manifold can be applied to NH3 pressure increasing systems. NH3 pressure decreasing systems and liquid fertilizer and pesticide systems.

Abstract: A method of applying anhydrous ammonia to soil is disclosed as including the step of pressurizing anhydrous ammonia received from a source. The pressurized anhydrous ammonia is conducted to a plurality of terminal outlets, wherein each of the outlets is configured to maintain a back pressure and preferably a liquid state of the anhydrous ammonia. The anhydrous ammonia is discharged from the plurality of terminal outlets to thereby contact the soil.

Abstract: A method of applying liquid anhydrous ammonia to soil is disclosed as including the step of pressurizing anhydrous ammonia received from a source. The pressurized anhydrous ammonia is conducted to a plurality of terminal outlets, wherein each of the outlets is configured to maintain a back pressure and thereby the liquid state of the anhydrous ammonia. The anhydrous ammonia is discharged from the plurality of terminal outlets to thereby contact the soil.

Abstract: An anhydrous ammonia injection apparatus is disclosed for injecting anhydrous ammonia into the soil. The apparatus includes a tank adapted to contain liquid anhydrous ammonia and a conduit extending between the tank and a pump. The pump is configured to variably increase the pressure of the anhydrous ammonia within the conduit. The apparatus also includes a restrictive orifice in fluid-flow communication with the conduit downstream from the pump. In addition, the apparatus includes a terminal outlet connected in fluid-flow communication with the conduit for discharging the anhydrous ammonia from the apparatus. The restrictive orifice cooperates with the pump to maintain a pressure within the conduit therebetween that is greater than the vapor pressure of the anhydrous ammonia.