The results available with high pressures are usually available at low pressures as well: it simply takes longer. Low-pressure injection is popular largely because of the low initial equipment cost and ease of installation. The procedure is straightforward, requiring little equipment and know-how. Resin is pre-mixed in a disposable plastic bowl which is then pressurized to flood a circuit of plastic tubing connected to a series of port adapters. All of the ports are injected simultaneously. Pressure is maintained until the resin has gelled within the tubing.
The dispenser consists of a steel frame with a collar to support the disposable bowl, a lid, a clamping device to secure the lid, and brackets to mount a regulator and pressure gauge.