Variable area flowmeters

Swagelok variable area flowmeters (VAFs) are used to measure liquid and gas flow rates by means of a tapered tube and float and can provide highly accurate measurement with individually calibrated scales and a 10:1 turndown ratio. All Swagelok VAFs are factory calibrated and marked to indicate the specific media, flow range and accuracy class. In addition, the product can be calibrated and marked to customer-specific applications.

Customers can choose from 10 variations of variable area flowmeters fitted with glass or metal measuring tubes. Swagelok G series models feature glass measuring tubes, which enable direct view of the process reading and flow at the meter. A miniature glass tube model, as well as a glass tube model with plastic end connections, is also available. For use in difficult operating conditions where pressure or temperature is a factor, Swagelok M series models are equipped with metal measuring tubes and mechanical or electronic displays. All models are easy to install and have no wearing parts.

Swagelok VAFs are available with NPT and flange end connections in sizes from 1/8 to 1 1/4". Available options include high/low flow indicators, transistor relays and 4-20 mA analog outputs.