https://www.danfoss.com/en-us/about-danfoss/news/dhs/danfoss-introduces-updated-series-of-mechanical-thermostatic-radiator-valve-operators/
Danfoss Climate Solutions is excited to introduce a new product line of thermostatic radiator valve operators to meet the demands for greater energy efficiency...
thermostatic radiator valvedanfossintroducesupdatedseries
https://www.halliburton.com/en/resources/ib-series-mechanical-fluid-loss-isolation-barrier-valve
Valve isolates the formation below gravel pack packer before upper completion installed and used in frac pack, gravel pack, standalone screen application.
ib seriesfluid lossdata sheetmechanicalisolation