THe SM and SM/HP are threaded hex-headed level indicators from Miselli that are forged from aluminum 11S. THe Model SM sight glass sereies is constructed from polyamide TROGAMID® T, that gives good mechanical resistance and is immune to hazardous effects of mineral oil, gasoline, lubricants, petroleum, solvents and most chemical agents. It is capable of operating up to 10 bar of pressure. One of the models, the new the new CX unit is made from special resin resistant fluid that contains alcohol and is offered by request in small quantities.
The Model SM-HP with sightglass is manufactured from natural glass and internal seal in VITON. It is adequate for application until 130°C and 20 Bar internal pressure.