In your search for visual flow indicators, sight glasses or other process observation equipment in the cannabis oil extraction industry, look no further than L.J. Star.

As more states legalize the use of cannabis for either medical or recreational purposes, demand for equipment that can extract oils high in THC (tetrahydrocannabinol) from it is growing. The process of extracting this oil involves pressures ranging anywhere from 80 psi to 5,000 psi, depending on the size and style of equipment used. The THC extraction process can also involve any of a number of solvents, such as carbon dioxide, butane or propane. The combination of high pressure and flammable gases can pose a danger to workers.

Sight glasses are essential for operators to observe the extraction process and evaluate the color and clarity of the product; sanitary clamps that can handle high pressures and that can be opened quickly to clean connections and the vessel in between batches are also required. During the THC extraction process, the process media is repeatedly heated and chilled; so the sanitary fittings used must be able to undergo repeated thermal cycles without loosening.

Metaglas windows are available in a sanitary clamp design, as MetaClamp® Sanitary Sight Glass Windows, for use as sight ports and light ports or as inline visual flow indicators. For process observation in extraction equipment, LJ Star recommends Type 61 threaded Metaglas® mechanically pre-stressed sight glass windows. In these sight glasses, borosilicate glass is fused to a stainless-steel ring for exceptional strength under high pressure.

For making high-pressure hygienic connections, the ASME Section VIII rated Sanitary Clamp offers the greatest protection. Its Omega profile ensures uniform clamping compression. It is cast from 316 stainless steel and features a heavy-duty three-bolt and hinge design that provides quick access to joints for cleaning and inspection without sacrificing safety. Also, the two-bolt Series SSH Sanitary Clamp, optimized for pharmaceutical and biotech applications, features a two-bolt design and Omega profile to prevent disassembly while under pressure.