On Line Controls, Inc., is the recognized industry leader in the field of ultra low air pressure regulators for the plastic tubing industry for more than 30 years. As a small corporation in Hudson, Massachusetts, USA, OLC has a reputation for manufacturing high quality reliable “MicroAir” products which are sold worldwide and have a life span of over 30 years. While the basic body design has been improved upon each year, the MicroAir has maintained the same outer look and ease of use.

In 1999 the precision motorized potentiometer line was purchased and production started in early 2000 for these dependable high precision proportional controls for automating analog driven devices. OLC is capable of repairing or replicating most old ETI motorized potentiometers built in the 80’s and 90’s. Built from the highest quality materials their life expectancy is at least 10 years.

Previously OLC manufactured the first PC based OD/ID/Wall measurement and control system “UltraGage”, from 1981 thru 2007. Product line was sold and discontinued by OLC.

On Line Controls prides itself on being dedicated to applying our knowledge and resources to understand and support our customers’ needs.

We sell direct to our customers from our Hudson Massachusetts facility and through extruder (OEM) manufacturers. Our products are made in the USA and delivered worldwide, with customers in Canada, Mexico, Ireland, Italy, France, Germany, Spain, Japan, Colombia and China. OLC has an outstanding reputation as being able to quickly respond to any customer servicing needs.

Some of our valued clients and customers are:

  • Graham Engineering/American Kuhne
  • Davis-Standard Corporation
  • Conair
  • Gimac – MAC G.I. (Italy)
  • RDN Mfg Co., Inc.
  • Boston Scientific
  • Covidien
  • Medtronic
  • Teleflex Medical
  • Tyco Healthcare
  • Avon Automotive
  • Henniges Automotive
  • Hutchinson
  • Baxter Healthcare
  • Becton Dickerson
  • Microspec
  • Beckman Coulter
  • Tesco