Rectangular Tanks are designed with heavy walls for long service under severe conditions. These tanks are molded from a rigid high-density polyethylene blend. These tanks usually have a square 3-D maze of perforated baffles and braces. Rectangular tanks have the advantage of ease of construction with the simplest shape for shuttering or for assembling precast units.

Rectangular Valves are used when the conditions of service allow low-impact velocities at high lift and when the gas is clean and non-corrosive. They provide the highest efficiency and reliable service. The rectangular valves, both feather & channel types have straight elements and are more efficient. The strips of the valves incorporate relatively high lifts. They use metal elements and can resist only moderate impact velocities and require clean & non-corrosive conditions.

Rectifier Transformers are transformers used to feed a rectifier circuit, which converts an AC current into a DC current. This is used for their power to support the current in an extreme short-circuit. It is used to step-up or step-down AC voltages for rectification and filtering.

A rectifier is an electrical device that converts alternating current to direct current, a process known as rectification. Rectifier is used as component of power supplies and as detector of radio signals. Rectifier may be made of solid-state diodes, vacuum tube diodes, mercury arc valves, and various other technologies. The simplest type of rectifier circuit is the half-wave rectifier, because it only allows one half of an AC waveform to pass through to the load. Full-wave rectification converts both polarities of the input waveform to DC, and is more efficient.

The recuperative thermal oxidizer is a thermal oxidizing system. It reduces fuel consumption by preheating the incoming air. Thin wall tubes transfer the heat from the exhaust air to the incoming air before it enters the combustion chamber. It consists of a combustion chamber with a shell and tube heat pre-heat exchanger. The high levels of destruction efficiency are achieved by the design of the system giving equal importance to three oxidation parameters such as temperature, residence time and turbulence. It recovers heat from the oxidizer exhaust and uses it to raise the temperature of the incoming process air. This reduces the energy needed to raise the VOC-laden air to combustion temperature